Pollutec Recycling

Byproducts FeedstockRecycling

Sun, 12 Feb 2012 22:17:52 GMT

The major product of pyrolysis is either a monomer PMMA, PS , or a series of fuel fractions. By-products of plastics pyrolysis are related to the presence of Heteroatoms oxygen in the resin or the pyrolysis atmosphere leads to the formation of water and oxygenated products chlorine leaves pyrolysis units mainly as an irritating and corrosive hydrogen chloride gas. Normally, no chlorine gas is formed, due to the strongly reducing conditions. Bromine, under similar conditions, is somewhat easier...

Reactor Types and Processes Table FeedstockRecycling

Thu, 09 Feb 2012 16:17:10 GMT

Professor Fontana and Dr Jung classified all major gasification routes and pyrolysis processes, studying their mass and energy balances as well as operating conditions refer 2nd ISFR Ostend 9 , predicting the behaviour of mixed plastics during pyrolysis and gasification, in order to assess the production of valuable substitution fuels. Their model was validated by laboratory-scale experiments and the quality of the resulting substitution fuels evaluated, to choose the best thermal process for...

Paper EnergyBalance

Tue, 07 Feb 2012 11:41:10 GMT

Paper represents the bulk of the readily recyclable material, by weight, in domestic refuse, newsprint and cardboard accounting for 20 of this total, the remainder comprising mixed quality grade papers, such as high quality computer printing or photocopy paper, plastic coated papers such as milk cartons, and magazines. An estimated 200000 tonnes of paper based products are discarded and landfilled annually. Approximately 90 of these paper products would have been produced from 100 virgin wood...

Zeolites FeedstockRecycling

Thu, 02 Feb 2012 15:14:08 GMT

The decomposition of a polymer chain, being a hydrocarbon cracking reaction, is catalysed by acidic catalysts. The main category of solid cracking catalysts, as well as the more widely used in industry, are zeolites, as they constitute the main ingredient of catalysts used in the FCC process in refineries. Zeolites are crystalline aluminosilicates with a well-defined microporous structure with cages and channels of dimensions comparable to the size of common simple organic molecules. Zeolites...

Competition between domestic and foreign firms RecyclingMarkets

Mon, 30 Jan 2012 06:10:09 GMT

DSD does not discriminate against foreign suppliers in so far as they can obtain a Green Dot on their packaging. However, in practice the quota for refillables could be barrier as imported packages are more likely to be one-way. The deposit refund will only be appropriate for domestic firms. So a refillable quota could limit imports. A tax on oneway containers would lead to increased supply of domestic returnables and tend to leave the amount imported unchanged, so there would be no problem as...

Introduction EnergyBalance

Thu, 26 Jan 2012 23:46:29 GMT

Perth metropolitan households generate around 500000 tonnes of domestic refuse annually, and all but a small proportion of this will find its way into sanitary landfill. Landfill, once thought to be the best way of getting rid of domestic refuse whilst eliminating the inconvenience of low-lying waste lands, has since become increasingly associated with groundwater pollution, and the harbouring of organisms capable of causing and spreading disease and infection. More recently, landfill sites...

INTRODUCTION Ful FeedstockRecycling

Thu, 19 Jan 2012 02:13:02 GMT

Municipal waste plastics MWP are a significant part of municipal solid wastes which are collected as household waste. Municipal plastic wastes usually account for about 8 of the total municipal solid wastes MSW by weight and much more by volume 1 . Separation of the plastics from MSW is mainly by hand, either by the household prior to collection or at a materials recycling facility. An average weight composition of the separated plastic wastes is given in Table 8.1. According to an APME report,...

Recovery Of Heavy Oil From Waste Plastic FeedstockRecycling

Fri, 06 Jan 2012 22:43:18 GMT

The waste plastics generated from households are in the form of plastic mixtures among such mixtures, the amount of PET generated as a household waste has rapidly increased as the production of PET bottles has increased. PET is formed by the ester bonding of terephthalic acid and ethylene glycol. When PET is heated above 380 C, pyrolysis suddenly starts, yielding oxygen-containing hydrocarbons and a significant amount of carbonaceous residue 17-19 . Accordingly, in order to develop a recycling...

Theory Of Plastics Pyrolysis FeedstockRecycling

Wed, 04 Jan 2012 10:03:15 GMT

The decomposition of plastics can be considered as depolymerization of polymer into low-molecular product. The general reaction mechanism for the thermal degradation is described with the following steps, and also shown in Figure 5.1. Initiation may occur at random or end-chain positions. Depropagation is the release of olefinic monomeric fragments from primary radicals. Hydrogen chain transfer reaction, which may occur as intermolecular or intramolecular processes, leads to the formation of...

Logistics Of Supply FeedstockRecycling

Fri, 23 Dec 2011 15:56:20 GMT

Plastic resins are bulk commodities. A naphtha cracker producing ethylene has a typical yearly capacity of 500000 tonnes of ethylene, necessitating about 1.2 Mtonnes of naphtha feedstock Polymerization to resins is conducted with a somewhat lower capacity, but still at the same order of magnitude, say 150000 tonnes. Engineering plastics are produced at lower capacity, but this lower rank is still far superior to the capacity of the largest feedstock recycling units conceived to date The problem...

Product Distribution FeedstockRecycling

Mon, 05 Dec 2011 06:37:36 GMT

The original polymer mass in the presence of a catalyst is generally converted into volatile products while a residue is left unconverted. This residue consists of a polymer solid residue of genuinely unconverted plastic, although usually not of the same composition and molar mass distribution as the original, and coke formed on the catalyst surface. From these two residue components, the first one can be eliminated by changing the reaction conditions most obviously by increasing the polymer...

Product Specifications FeedstockRecycling

Wed, 30 Nov 2011 18:42:07 GMT

Distinction should be made between monomers, specific petrochemicals, and more or less typical oil fractions, produced by mixed plastics pyrolysis. Potential pyrolysis products from polyolefins are naphtha, kerosene, or gas-oil. These are blends of numerous different Table 1.6 Typical naphtha specifications and testing methods 18 Table 1.6 Typical naphtha specifications and testing methods 18 hydrocarbons, but they still need to satisfy some common commercial specifications. Off-specification...

Japanese Initiatives and Processes FeedstockRecycling

Fri, 04 Nov 2011 14:08:22 GMT

Both the Ministry of International Trade and Industry MITI and the Plastics Waste Management Institute PWMI have been very active in promoting plastics recycling from early in the seventies. In Tokyo, plastics and metals were considered as waste, unfit for incineration and separately collected 1973 and treated in a Nippon Steel shaft furnace. Early Japanese systems, e.g. from Japan Steel Works, Japan Gasoline Co., Kawasaki H. I. Co., Mitsui Shipbuilding amp Engineering Co., Mitsubishi H. I....

Rheology PlasticsRecycling

Mon, 29 Aug 2011 12:35:34 GMT

Rheology is the study of deformation and flow. Consider the following examples of flow 1. Squeezing toothpaste through a tube, 2. Tipping honey from a spoon, and The toothpaste, honey and water all have different viscosities. The toothpaste is the most viscous, the water the least. Viscosity means the resistance to flow. In viscous flow, a material continues to deform as long as a stress is applied. To put it more simply, in the case of the toothpaste tube, the toothpaste is squeezed out only...

Case Study Packaging PlasticsRecycling

Mon, 29 Aug 2011 10:02:22 GMT

Recycling rates vary greatly across Europe, due to different legislative and environmental measures adopted by member states. The country at the forefront of implementing plastics recycling schemes is Germany. Packaging waste concepts introduced in Germany in June 1991 have provided much valuable data for the rest of the EU. The target set was 64 to be recycled by July 1995, based on a system of collection, sorting and recycling technology. The high environmental awareness present in the German...

Survey Of Previous Work FeedstockRecycling

Mon, 29 Aug 2011 09:47:26 GMT

Most work on plastics pyrolysis has been academic and directed at the analysis of polymers, their molecular structures and thermal stability, at the study of pyrolysis products, e.g. fire research, or at feedstock recycling at a laboratory or pilot scale. An early survey was given by Madorsky 4 . Given the large number of possible purposes, or different resins, additives, and operating conditions, the field is as wide as the sky Since the introduction of modern instruments ca 1962 the thermal...

Air Conditioning Refrigeration Contractors RecyclingReuse

Fri, 26 Aug 2011 05:58:08 GMT

Airport Hts. Drive 36 Paddy DobbinDr. Avalon Steamatic Ltd. Baker's Refrigeration amp Heating Bennett's Refrigeration amp Air Conditioning Black amp McDonald Cimco Refrigeration C amp J Sheet Metal Keep Cool Refrigeration amp Air Conditioning Limited Kool - Rite Refrigeration 9 Mullock Provincial Refrigeration Ltd. 23 Rhodora Whitten Agencies Limited 28 Eastview Cr 726 - 0220 753 - 3377 738 - 2988 747 - 1406 754 - 6180 726 - 7997 726 - 6300 576 - 2130 364 - 3498 364 - 3506 726 - 7761

INTRODUCTION Jta PlasticMaterials

Fri, 26 Aug 2011 02:09:34 GMT

Techniques for selection and recycling of post-consumer plastics are closely related to the characteristics of plastic containers consumption, which are extremely diversified according to the geographical areas and the relevant law regulations governing activities in this sector. In each area, socio-economic and legislative features as a whole determine the first stage of the recycling process, that is collection. This, in turn, influences the layout of the recycling plant which aims at the...

full cycle RecyclingGuide

Thu, 25 Aug 2011 19:00:35 GMT

In general, humans build great edifices and nature eventually destroys them. We humans should take solace, then, in the fact that nature sees fit to destroy not just our great works but its own as well. The great recycling plants that are molecular clouds are ultimately limited, and then destroyed, by their own success. Supernovae and other powerful stellar winds push material around, and the en- ergetic photons from hot young stars eat away at gas that could have extended those stars'...

Implement harmonised standards for retreads crumb rubber and TDF RecyclingMarkets

Thu, 25 Aug 2011 05:36:42 GMT

Safety should of course not be compromised just to reduce the problem of waste tyres, but studies have shown that retreads can be just as safe as new tyres and the retread industry even claims they are of a higher quality than the budget tyres from Asia and Russia. The main problem then is to convince the public of this fact. One way to do this is the introduction of clearly communicated safety standards for retreaded tyres that should be very similar to standards for new tyres. The UNECE...

About the Editors FeedstockRecycling

Wed, 24 Aug 2011 22:51:05 GMT

Dr John Scheirs is a polymer research specialist with an emphasis on plastic recycling and pyrolysis of waste plastics into fuels. He serves as a consultant for Ozmotech Australia and has worked on the development of their Thermofuel process which can convert unwashed mixed plastics into low-sulfur diesel transportation fuel. He has studied the pyrolysis of HDPE, PP, PET and engineering plastics. John Scheirs is the author of the leading book on plastics recycling entitled Polymer Recycling...

Various Catalysts FeedstockRecycling

Wed, 24 Aug 2011 13:56:22 GMT

The thermal degradation of waste HDPE can be improved by using suitable catalysts in order to obtain valuable products. However, this method suffers from several drawbacks. The catalysts are deactivated by the deposition of carbonaceous residues and Cl, N compounds present in the raw waste stream. Furthermore, the inorganic material contained in the waste plastics tends to remain with the catalysts, which hinders their reuse. These reasons necessitate a relatively high purity of waste plastics,...

Catalytic Liquefaction Of Mwp FeedstockRecycling

Tue, 23 Aug 2011 06:27:45 GMT

in these studies were solid acids amorphous silica-alumina, zeolites, zeolite-based FCC catalysts, MCM mesoporous materials and super acidic zirconia, etc. . Besides acidic catalysts, a few studies have been performed with activated carbon and nonacidic mesoporous silica catalyst FSM 11-15 . Acidic cracking catalysts are very useful for direct liquefaction of PE and PP. The catalytic effect of acidic catalysts in plastic pyrolysis has been explained by a carbonium ion theory. The catalytic...

Acknowledgements MaterialRecycling

Mon, 22 Aug 2011 20:21:24 GMT

Many people contributed to the Construction Materials Recycling Project. The project director gratefiilly acknowledges the contributions of the following people as well as other contributors not listed here. Greg Batch, 3M Facil. Eng. amp Real Es David Bergstrom, Eberhardt Commercial Real Estate David Boe, Waters amp Bonner, Inc. R. Bruce Cornwall, Bentz Thompson Rietow.lnc Tracy W. Donovan, Commonwealth Electric of MN Sunny Jo Emerson, Metropolitan Council Craig Gerkin, Materials Recovery Ltd....

ShortTerm Mechanical Testing PlasticsRecycling

Mon, 22 Aug 2011 17:37:24 GMT

Experiments for measuring the effects of reprocessing have now been discussed. MFI as a method of monitoring degradation has already been mentioned, next the methods of mechanical evaluation will be considered namely tensile and impact properties. Tensile testing can be thought of as a stretching test. Tensile properties are a method used widely to analyse the short-term stress-strain response of a material. Computer controlled tensile test machines are commonly employed, allowing one simple...

Conclusion Recycling of Plutonium

Mon, 22 Aug 2011 11:54:33 GMT

The experience accumulated so far at the BN plant has demonstrated the commercial viability of MOX fabrication. The MIMAS process developed is suited for commercial use considering the particularity of the MOX fabrication technology and the variability of the plutonium as received from reprocessing. The same process has therefore been choosen by COGEMA for the MELOX plant in Marcoule and for CFCa in Cadarache. The irradiation of MIMAS MOX fuel in commercial reactors as well as experimental...

RESULTS AND DISCUSSION Processing PlasticMaterials

Mon, 22 Aug 2011 09:29:09 GMT

When mixed plastics waste is processed, one ofthe main problems is to find the best compromise between homogenization and degradation. In the waste material, there are polymers with different melting points and different thermal stability. Especially, PVC and PET are very difficult to process together, because the melting point of PET is over 250oC, and at this temperature PVC is easily decomposed forming HCl and chary residues. Therefore, the optimal processing Figure 1. The modulus and impact...

Polymertocatalyst Ratio FeedstockRecycling

Mon, 22 Aug 2011 07:38:40 GMT

An important aspect in a future catalytic process for degradation of plastic waste is the amount of catalyst used in such a process. In a batch system, which is the most broadly used so far to test the performance of various catalytic systems, the amount of catalyst is characterized by the polymer-to catalyst mass ratio. Results from initial experiments carried out on a TGA equipment Figure 7.1 9 using high-density polyethylene HDPE as raw material at different polymer to catalyst mass ratios...

Solvent Degradation By Photocatalytic Oxidation RemovalDegradation

Sun, 21 Aug 2011 17:10:30 GMT

Photocatalytic solvent oxidation had been demonstrated at the pilot scale in two recent field tests located at McClellan Air Force Base AFB in Sacramento, California and at the Fort Carson U. S. Army Installation in Colorado Springs, Colorado Watt et al., 1999 Magrini et al., 1998 . The objective of the tests was to determine the effectiveness of solar-powered photocatalytic oxidation PCO treatment units for destroying emissions of chlorinated organic compounds trichloroethylene and...

References Fkv Recycling of Plutonium

Thu, 18 Aug 2011 11:28:49 GMT

1 An Assessment Could Weapon-grade Pu be an Asset for Managing Pu Inventories 2 Disposition of Weapons Grade Pu-Analysis of the best way MOX Fuel, A. Decressin amp E. Vanden Bernden 2nd Annual Int'1 Policy Forum Management and Disposition of Nuclear Weapons Materials, Lansdowne, VA, 21-24 March 1995 3 Pu Inventory in Western and Eastern Europe, FEX Report 9502 commercial 4 White Paper on Nuclear Energy, Atomic Energy Commission, Japan, Nov 94 5 Nuclear Power, Nuclear Fuel Cycle and Waste...

Mechanical behavior of HDPELDPE blends PlasticMaterials

Wed, 17 Aug 2011 09:34:29 GMT

The mechanical properties of blends of virgin HDPE and LDPE and plastic wastes are below those expected on the basis of an additive rule.22-29 In Figure 5 Figure 5. Polar representation of mechanical behavior of HDPE LDPE system containing either virgin polymers or composition from urban wastes. Figure 5. Polar representation of mechanical behavior of HDPE LDPE system containing either virgin polymers or composition from urban wastes. a polar representation was plotted showing the mechanical...

Quality of the raw materials PlasticMaterials

Wed, 17 Aug 2011 00:45:59 GMT

Virgin PET had an intrinsic viscosity of 0.78 dl g and was crystallized and solid state-polycondensed upgraded by the chemical manufacturer. PET reground flakes came from an unknown PET source. The flakes consisted of 100 PET before the reground bottle flakes went through a separation and clean-up process. The flakes were not regranulated since this step involves separate machinery and would add to the cost of the reground polymer material. The intrinsic viscosity was 0.03 to 0.05 dl g lower...

Mechanical Properties PlasticMaterials

Tue, 16 Aug 2011 12:29:03 GMT

The mechanical properties of all the investigated materials are reported in Figures 2-5 as a function of the mixed plastics waste concentration. The experimental results are reported in dimensionless form, i.e., the value relative to each blend is divided by the corresponding value of the unblended matrix. These latter values are reported in Table 2 for three matrices. As expected, all the mechanical properties, except for the elastic modulus, decay on increasing the MPW content. The extent of...

The lifecycle of tyres RecyclingMarkets

Mon, 15 Aug 2011 16:52:21 GMT

The increased number of vehicles has led to a tremendous growth in the volume of used tyres. Over a billion tyres reach their end of life in the world each year Brown and Watson, 2002 of which about 200 000 000 arise in Europe and 290 000 000 in the United States RMA, 2003 . From 1998 to 2008 this is expected to change by 2 every year. Vast quantities of tyres are stocked piled in designated landfills or illegally dumped, since a small quantity is presently reused and recycled see www .rma.org...

Recycling of waste demolition of IBM laboratories Winchester Wastemanagement

Thu, 11 Aug 2011 19:29:28 GMT

IBM has a general recycling policy which seeks to reuse or recycle about 50 per cent of the non-hazardous waste produced by the company.6 When in 1993 the company decided to demolish an office block in the heart of an estate of computer laboratories at Hursley near Winchester, it decided to collapse the 1960s building subject to the following criteria as many building materials as possible to be recycled demolition to be safe for site users and those occupying adjoining buildings noise levels...

Properties Of Liquid Product FeedstockRecycling

Thu, 11 Aug 2011 14:38:43 GMT

The need for various grades of the product oils separated in the distillation tower is evident. In order to keep the various grades on a uniform basis, the authorities in each country have standardized on a few grades by the properties of the oil produced. It is necessary to compare reliable properties of the oil produced, as a comparison with those of commercial gasoline, kerosene and diesel. It is essential to determine the physical measurements such as those listed for a variety of the oils,...

Design Features Recycling of Plutonium

Wed, 10 Aug 2011 21:33:19 GMT

Large Flow Area Upper Tie -Plate - Low Pressure Drop - Optimized Hot to Cold Reactivity Swing - Optimized Void Reactivity Coefficient - Simplified Enrichment Distribution - Proven Design Hydraulic Mechanism for High Precision Control of Coolant Leakage between LTP and Channel Box The spacer, upper tie-plate UTP and lower tie-plate LTP play important roles for the thermal-hydraulic performance. The ring-type spacer provides a high critical power which has been demonstrated by testing 4 , The low...

Francesco P La Mantia Pvc and Mixed Plastics

Tue, 09 Aug 2011 14:50:26 GMT

Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, Universita di Palermo, Viale delle Scienze, 90128 Palermo, Italy Mechanical properties of secondary plastic materials obtained by recycling of post-consumer plastic containers for liquids are very poor. This is due to the incompatibility between component polymers PET, PVC, and PE and degradation of components during the heterogeneous reprocessing. The use of different classes of additives, such as stabilizers, inert fillers,...

Multimaterial haulers and processors MaterialRecycling

Mon, 08 Aug 2011 03:10:02 GMT

Organizations that transport and or process more than one construction waste material for recycling. Unless otherwise noted, organizations listed provide waste containers and do not accept deliveries. 1. Haulers, transfer stations, and MRFs that accept mixed loads of construction wastes and sort out three or more materials forrecycling Concrete, concrete block, and or asphalt Concrete, concrete block, and or asphalt Wood dimensional lumber and or pallets and crates. Wood dimensional lumber and...

Signalling and market segmentation RecyclingMarkets

Mon, 08 Aug 2011 00:46:52 GMT

Other market characteristics may also inhibit the take-up of recycled plastics. For instance, market signalling may play a role.48 Similar processes occur with other goods and services where product quality or similar attributes may be unobservable. Thus high quality cars are sold from opulent showrooms, and inferences will be made about cars sold from more basic premises. This could be used as a means of price discrimination, where a manufacturer will separate customers into those with a high...

Comparison of the Composition of Granular Slag and Basalt Lava Rock ConvertingWaste

Sat, 06 Aug 2011 01:18:13 GMT

I Soua -Jtnqtuunq m Attlttw U tor BMOttftrtrwanung- fWritafai ot Fteidu Rscydtig W sta Report by Dp.-tng. H nul Piper, Nikdaui Sorg GmCH amp Co KG, Jan 26,1991 h N mtorg I Soua -Jtnqtuunq m Attlttw U tor BMOttftrtrwanung- fWritafai ot Fteidu Rscydtig W sta Report by Dp.-tng. H nul Piper, Nikdaui Sorg GmCH amp Co KG, Jan 26,1991 h N mtorg The thermal energy contained in the flue gas is used for generating steam at 400 C and 40 bar in the heat recovery steam generator. The steam is subsequently...

Effect Of Addition Of Other Thermoplastics FeedstockRecycling

Thu, 04 Aug 2011 15:34:31 GMT

Lee et al. 29 reported the effect of PS addition in the catalytic degradation of waste HDPE and PS mixture using spent FCC catalyst at 400 C. Figure 5.14 shows the cumulative amount distributions of liquid products as a function of reaction time for the catalytic degradation of waste HDPE and PS mixture in different proportions. The increase of PS content in HDPE and PS mixture showed much high initial degradation rate and high Figure 5.14 Cumulative amount distributions of liquid products for...

Italy RecyclingMarkets

Wed, 03 Aug 2011 12:51:49 GMT

In contrast to the UK, long-term enthusiasm for the re-refining of waste oil has led policy makers to support the manufacture of base oil from waste oil sources. From July 2003, new regulations were introduced to reform a system of subsidies paid to re-refiners and collectors of waste oils A statutory consortium consisting of representatives from the manufacturers of lubricants, waste oil collectors and re-refiners as well as public regulators manages the contractual arrangements for waste oil...

Microstructural aspects of HDPELDPE blends PlasticMaterials

Wed, 03 Aug 2011 11:40:41 GMT

Figures 9 to 10 show micrographs of the microtomed sections from injection molded bars. The different microstructure of HDPE LDPE blends, having different compositions, are shown Figure 9 . In fact, these thin sections taken in the parallel flow direction inside the cavity of a mold and near the gate, show differences in Figure 13. Micrographs of 85 15 left and 15 85 right HDPE LDPE ratio with 1 LMWPE. Figure 13. Micrographs of 85 15 left and 15 85 right HDPE LDPE ratio with 1 LMWPE. Figure 14....

INTRODUCTION Uyl PlasticMaterials

Tue, 02 Aug 2011 18:47:52 GMT

Problems connected with recycling of polymeric materials arise mainly from the heterogeneous nature of plastics waste and from degradation of polymers occuring either during their processing or their lifetime. As for the first point, important only when mixtures of plastics have to be recycled, it is well established that a strong incompatibility is typical for polymers usually found in plastics wastes PE, PET, PVC, PS, PP . This incompatibility gives rise to materials which are very difficult...

INTRODUCTION Wqd FeedstockRecycling

Mon, 01 Aug 2011 14:56:09 GMT

The dramatic growth of living standards in the second half of the twentieth century was accompanied by a drastic increase in plastic product use. This unavoidably had a huge impact on the environment, as it caused a rapid increase in plastic waste that does not degrade and remains in municipal refuse tips for decades. Consequently plastic waste is a large strain on existing disposal methods, landfill and incineration. Landfill space is becoming scarce and expensive, a problem exacerbated by the...

Solvent Recovery From Hazardous Wastes RemovalDegradation

Sat, 30 Jul 2011 13:25:41 GMT

Table 22.2.5. Cleaning performance of solvents Table 22.2.4. Properties of cycloparaffins as a cleaning solvent Table 22.2.4. Properties of cycloparaffins as a cleaning solvent Table 22.2.5. Cleaning performance of solvents The process was previously used for chlorine compounds represented by perchloroethylene and trichloroethyl-ene and for fluorine compounds used for cleaning of press stamped metal parts. However, these compounds are now prohibited for use and production by environmental...

OFRU Recycling GmbH Co KG Babenhausen Germany RemovalDegradation

Fri, 29 Jul 2011 12:03:14 GMT

The Swiss coating manufacturer Karl Bubenhofer AG was planning to acquire various wash plants for cleaning batch, mixing and multi-trip containers efficiently. The contaminated solvents obtained during the wash process were then to be treated automatically by distillation. The distillation plant had to have a suitable output, operate continuously and be simple to operate. Another requirement was the ability to combine this plant with the wash plants in a new building complex. A distillation...

Dump it or recycle it RecyclingStrategies

Thu, 28 Jul 2011 00:19:59 GMT

Rubbish produced each week Los Angeles 21 kg New York 13 kg London 6 kci I low much rubbish do you throw out every week If you live in Los Angeles, you probably throw away about twenty-one kilograms of rubbish every week. Every man, woman and child in London throws away six kilograms of rubbish every week. The figure for Tokyo is seven kilograms. Mexico City throws away only three kilograms for each person. Imagine the mountains of rubbish in a big city like New York, which throws away 170,000...

Conclusion 1 PlasticsRecycling

Wed, 27 Jul 2011 15:51:15 GMT

The continued development of an integrated IPP depends primarily on the political agendas of member states and the inevitably long time scales involved in implementing these changes. However with the policy at the moment firmly one of 'eco-friendly', forthcoming legislation is only likely to force greater environmental compliance and challenges for manufacturers. This is reflected by the large amount of research being carried out now, for example in both the automotive and electrical and...

Preface FeedstockRecycling

Wed, 27 Jul 2011 13:01:52 GMT

This book covers thermal and catalytic pyrolysis processes that produce liquid fuels or other useful chemicals from waste plastics. The book provides a comprehensive overview of the main commercial plastics pyrolysis processes, the types of plastics that can be processed, the properties of the respective fuels produced and the key variables influencing the pyrolysis of plastics such as temperature, residence time, pressure and catalyst types. Only some 15-20 of all waste plastics can be...

Nature of recovery closed loop open loop and energy recovery RecyclingMarkets

Wed, 27 Jul 2011 02:26:06 GMT

Closed loop recycling refers to the situation where the recycled item is re-made, e.g. using PET bottles to make new PET bottles. This reduces the amount of raw material going into this product. Open Loop recycling refers to the case where different items are made, e.g. using PET from collected bottles to make synthetic fibre or plastic lumber. In this case, the amount of raw material going into PET bottle production is not reduced, and the savings arising here from the recycling of PET are at...

ORGANIZATIONS WHICH ACCEPT DONATIONS They may provide receipts for tax purposes RecyclingReuse

Mon, 25 Jul 2011 19:32:05 GMT

Computers for Schools 152 Water Street 739 - 3806 The uses are variable, depending on the ailment or sickness. Ingestion Although most expired prescriptions lose effectiveness as they expire, some do not. Some medications are also toxic after a certain length of time. The safest route is to NOT take any medications which are expired. Prescriptions are meant only for the person whose name is on the label. Do not give them to anyone else. Doctors prescribe them based on your specific medical...

REFERENCES Ipk Recycling of Plutonium

Mon, 25 Jul 2011 11:39:04 GMT

1 YI Chang, Nuclear Technology, 88 1989 129. 2 MACLEOD H M and YATES G, 'Development of mixed oxide fuel manufacture in the United Kingdom and the influence of fuel characteristics on irradiation performance', Nuclear Technology, 102 1993 3. 3 STEINKOPFF H., KROMPASS R., SCHUMANN K., TSYKANOV V A., SKIBA O V and PORODNOV P T., 'Characteristics and performance of the plant for re-fabrication of vibro compacted fuel elements for the BOR 60 reactor', Kerntechnik, 55 1990 243. 4 HERBIG R., RUDOLPH...

Addressing market inefficiencies in recyclable material markets RecyclingMarkets

Mon, 25 Jul 2011 03:38:50 GMT

If markets operate in conditions of maximum efficiency and regulatory standards and other policy measures are introduced for different waste management options such as to reflect their external environmental effects, recycling will be at its optimal level. However, in addition to the potential for non-internalisation of environmental externalities, other types of market failure may constitute an impediment to the realisation of commercial opportunities in recycling markets. This project has...

Waste Plastics Suitable For Cracking And Pyrolysis FeedstockRecycling

Sat, 23 Jul 2011 13:58:39 GMT

Cracking and pyrolysis are the suitable processes for the tertiary recycling of additive polymers such as polyolefins, mainly polyethylene PE , polypropylene PP , polybutadi-ene PBD and polystyrene PS . Small admixtures of other plastics, such polyethylene terephthalate PET , polyvinyl chloride PVC , less than two 2 , are admissible yet not desirable. Taking into account the total share of polyolefins in plastics production 70 wt including PS they are the highest environmental problem. Their...

Decomposition Modes FeedstockRecycling

Sat, 23 Jul 2011 12:05:40 GMT

As a rule, the pyrolysis of plastics follows complex routes that cannot be described by one or more chemical reactions, but only and still rather imperfectly by either empirical formulas featuring fractional stoichiometric coefficients or comprehensive systems of elementary reactions, i.e. reactions that really proceed as written. Moreover, the composition and structure of these reaction systems may vary with details of molecular structure, such as chain irregularities, incorporation of...

Sample Bid Specification For Recycling On Construction Projects 1 MaterialRecycling

Fri, 22 Jul 2011 22:24:37 GMT

The sample bid specification guide spec is designed to address the concern of builders that if recycling means incurring higher waste management costs, those who choose to recycle would be at a competitive disadvantage. The spec is setup so that the contractor makes a waste management plan and a cost estimate for recycling after being selected as the builder on a project. You are encouraged to photocopy the guide spec for use and distribution. Building owners and architects can use the guide...

Results And Discussion Recycling of Plutonium

Fri, 22 Jul 2011 19:28:41 GMT

3 .1 EFFECT OF MILLING ON POWDER CHARACTERISTICS The morphology of each unmilled powder can be seen in Figure 1 a. The IDRs and ADU powders appear similar, each consisting of small less that 1 xm rounded particles. The IDRP powder possessed a definite 'plate-like' morphology with individual particles approximately 1 im in size. Table 1 gives results of toe Coulter counter analysis results which show that the mean particle sizes for each powder are very similar prior to milling. All of them lie...

Tableting process of pharmaceutical products RemovalDegradation

Fri, 22 Jul 2011 10:47:43 GMT

In a process which produces tablets, a mixture of solvents, containing MDC and methanol and binders is used. Solvents are emitted from the tableting unit. The following process is used to recover the emitted solvent. Feed gas at 50 C from the tableting process is pre-treated by a filter to remove dusts and by a rotary wet scrubber to absorb mainly methanol. During the scrubbing MDC also dissolves in water, although at low concentration. This water is treated in two steps, by a degassing unit at...

References Ive PlasticsRecycling

Fri, 22 Jul 2011 02:16:40 GMT

1. Plastics Recycling in Perspective, APME Technical and Environmental Centre, APME, Brussels, Belgium, 2000. 2. Assessing The Eco-Efficiency of Plastics Packaging Waste Recovery, New Insights Into European Waste Management Choices, Summary Report, APME, Brussels, 2001. 3. L. Bontoux, F. Leone, M. Nicolai and D. Papameletiou, The Recycling Industry in The European Union Impediments and Prospects, EUR 17271 EN, Report Prepared by IPTS for the Committee for Environment, Public Health and Consumer...

Technological externalities related to recovery and reuse of secondary materials RecyclingMarkets

Fri, 22 Jul 2011 00:14:17 GMT

A technological externality exists when the production function of one agent enters another agent's production or utility function, without the latter being compensated Kolstad, 2000 . Environmental externalities when they affect productive processes such as polluted irrigation water are, of course, specific examples of the more general case of technological externalities. However, they are by no means the only type of technological externality. In this section, the focus of the discussion is...

Fractional Distillation Of Products FeedstockRecycling

Thu, 21 Jul 2011 20:23:08 GMT

Reactor effluent that is composed of oils with various boiling temperatures is fed into the base of the fractional distillation tower where it is fractionated into selected product streams. Various product streams in the distillation tower are fractionated from Figure 5.18 Flow diagram of distillation tower Figure 5.18 Flow diagram of distillation tower reactor effluent due to their different boiling temperatures. The control variables are the temperature gradient in distillation tower,...

Alberta Canada RecyclingMarkets

Thu, 21 Jul 2011 16:17:14 GMT

A comprehensive description of the Alberta EPR system was prepared for the OECD in December 2002 CMCL, 2002 . The system imposes an ADF the Environmental Handling Charge on most lubricant and oil filter products at point of sale and distributes payments Return Incentives to collectors to provide an incentive to return waste oil, packaging and oil filters to almost 600 specified facilities. The policy is broadly revenue-neutral, and the programme, which has been developed and is directed by...

Introduction Rcc RecyclingWaste

Thu, 21 Jul 2011 12:45:14 GMT

The Environmental Protection Act 1990 EPA holds the producers of waste legally responsible for its disposal. Whilst this causes few problems to reputable contractors who use authorised disposal outlets, it does imply that the environmental lobby will give increasing attention to the industry's waste practices. The scale of the problem is significant, with 24 million tonnes of waste per annum going to landfill at a cost of approximately 13 a tonne 4 . Increasing environmental pressure is...

Upgrading Of Wasteplasticsderived Heavy Oil Over Catalysts FeedstockRecycling

Thu, 21 Jul 2011 07:18:43 GMT

In the series described thus far, it was found that the degradation of waste plastics proceeds efficiently by both thermal pyrolysis and hydrolysis in a steam atmosphere. A wax and carbonaceous residue produced by the hydrolysis of PET are decomposed by reaction with steam over an FeOOH catalyst, the activity of which remains stable in a steam atmosphere. However, the liquid product from generated from the process mentioned above contains a large amount of heavy oil, as shown in Figure 6.10....

Related Technologies Coprocessing FeedstockRecycling

Wed, 20 Jul 2011 16:43:08 GMT

In addition to the above-mentioned catalytic processes, there are some other related technologies wherein the catalytic cracking of plastic wastes is combined with the coprocessing of other substances, mainly coal and petroleum feedstocks lube oil, LCO, VGO or even a solvent. Hereafter, these technologies are explained more in detail. Coprocessing of plastics with coal in order to convert both of them into fuels is another promising option deeply studied by different authors 105-109 . The...

Francesco Paolo La Mantia Pvc and Mixed Plastics

Wed, 20 Jul 2011 15:13:08 GMT

Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, Universita di Palermo, Viale delle Scienze, 90128 Palermo, Italy The main problems in post-consumer plastics recycling are due to the degradation of polymers during processing steps and during lifetime. In the recycling of heterogeneous waste, the incompatibility among the different phases also poses substantial difficulty. The influence of both degradation and incompatibility on the structure and on the properties of the recycled...

Characteristics of lubricant oils RecyclingMarkets

Tue, 19 Jul 2011 07:55:16 GMT

A complex variety of compounds, such as detergents, dispersants, anti-oxidants, emulsifiers, corrosion inhibitors etc., are later added to base oils by specialist manufacturers to create an extensive range of lubricant products. These additives can contribute 5 to 10 of the weight of the lubricating oil. Once base oils have been blended with additives, packaged and marketed the value-added-multiple for engine oil is in the range 5 to 60 times the average value of crude oil. The exact mix of...

Intensive washing Pvc and Mixed Plastics

Tue, 19 Jul 2011 04:35:05 GMT

Figure 3. Scheme of the Zone III - packaging. Figure 3. Scheme of the Zone III - packaging. Friction separator paper, cardboard The main items of this zone are see Figure 2 Filtration and degassing extruder The main items of this zone are see Figure 3 The homomicronizer is the heart of the line. It transforms plastics waste into Newplast. It includes all means necessary to guarantee the safest possible operation within the context of the latest industrial safety criteria. It consists of a...

Glass EnergyBalance

Mon, 18 Jul 2011 11:01:16 GMT

Glass is produced locally within the Perth metropolitan area, yet less than 30 of the annual production of glass in circulation each year is collected for recycling. The majority of glass discarded in urban refuse is from food and beverage packaging. Depending on the nature of the glass, it can be recycled in the following manner crushed and remelted as cullet, that is, for broken and non-returnable or non-refillable glass containers and bottles cleaned, sterilised and refilled, that is,...

Recycling Is Wasteful and Ineffective GarbageRecycling

Mon, 18 Jul 2011 09:25:32 GMT

I am old enough to remember when a person just threw all of this stuff into the garbage can to be taken away. It involved two less trips and a smaller bill from the waste management company. Ask yourself about the utility of recycling. Glass is made from sand. The Earth is not running out of sand. Newspapers, when buried, stay intact for decades and, when burned, become mere ashes. Recycling plastic requires as much or more energy than that used to produce it. Its uses, however, are...

FIELD TEST RESULTS Air stripper application RemovalDegradation

Sun, 17 Jul 2011 23:08:55 GMT

The field test at McClellan AFB took place during a 3-week period in April, 1997. System operating conditions included two flow rates 10 and 20 SCFM and variable light intensity. The photoreactor system, designed to perform optimally at 10 SCFM with natural sunlight, was also operated at 20 SCFM to challenge the system. Because of varying solar illumination levels during the day, the system can operate for longer periods at lower flow rates. Residence times in the reactor at 10 and 20 SCFM were...

REFERENCES Vmb FeedstockRecycling

Sat, 16 Jul 2011 13:15:48 GMT

1. F. Pinto, P. Costa, I. Gulyurtulu and I. Cabrita, Pyrolysis of plastic waste 2. Effect of catalyst on product yield, Journal of Analytical and Applied Pyrolysis, 51, 57-71 1999 . 2. N. Miskolczi, L. Bartha, Gy Deak, B. Jover and D. Kallo, Kinetic model of the chemical recycling of waste polyethylene into fuels, Process Safety and Environmental Protection, 82, 223-229 2004 . 3. J. -S. Kim, W. -Y. Lee., S. -B. Lee, S. -B. Kim and K. -J. Choi, Degradation of polystyrene waste over base promoted...

Value Of The Resulting Products FeedstockRecycling

Fri, 15 Jul 2011 18:01:34 GMT

Some pyrolysis products have high value. These are mainly monomers, such as methyl-methacrylate, caprolactam the monomer of PA 6 , tetrafluorethylene, or styrene. Others are comparable to standard products with specifications of naphtha, kerosene, or gas-oil. Such fractions have a well-known market, as follows from Table 1.7. However, it is still questionable as to how far plastics pyrolysis can yield product fractions, according to current specifications without extensive post-pyrolysis...

Adsorption capacity RemovalDegradation

Fri, 15 Jul 2011 07:22:47 GMT

The adsorption capacity adsorptive power, loading of an adsorbent resulting from the size and the structure of its inner surface area for a defined component is normally represented as a function of the component concentration c in the carrier gas for the equilibrium conditions at constant temperature. This is known as the adsorption isotherm x f c T. There are variety of approaches proceeding from different model assumptions for the quantitative description of adsorption isotherms Table 22.1.3...

Mox Fabrication Recycling of Plutonium

Fri, 15 Jul 2011 06:56:06 GMT

The MIMAS for MIcronized MASter blend process was developed in the mid-eighties at BN to replace the former process used in the Dessel plant, which consisted in direct blending of U02 and Pu02 powders and was mainly used for the fabrication of the first core of the German Fast Breeder Reactor SNR-300. The main reasons for switching to the new process were the requirement to produce soluble fuel, for further reprocessing, and also the necessity to better adapt the fabrication to the specific...

Drying of PET resin and PET flakes Figure PlasticMaterials

Thu, 14 Jul 2011 20:18:22 GMT

The drying of a virgin PET resin and reground PET flakes at temperature levels of 160-180oC to below 0.005 moisture content is essential for the production of amorphous multilayer polyester bottles. Polyester is an effective desiccant. The water absorption depends on a relative humidity, residence time, temperature, and dimension of the flakes. When flakes containing moisture are heated up to the melting temperature, hydrolytic degradation occurs lowering a viscosity ofthe melt that results in...

Sweden RecyclingMarkets

Thu, 14 Jul 2011 14:33:55 GMT

Reidy 1992 reports that the average composition of waste in Sweden in the years up to 1990 is 35-45 paper, 8-10 plastics, 20-40 other assorted recyclable materials, and 25-35 food and garden waste. A high content of paper and increasing content of plastics with reduced content of metals leads to high calorific value of 10-12 MJ kg. Packaging waste accounts for about half of all municipal solid waste in Sweden. Around 35 billion packaged products are sold each year. Attempts have been made to...

Paint booth application RemovalDegradation

Thu, 14 Jul 2011 14:16:54 GMT

For the paint solvent application, a slipstream of a paint booth vent located at Fort Carson was analyzed to determine the components present with rapid scan gas chromatograph. On any operational day, several paint types are sprayed. The solvent emissions content thus varies during painting operations. In general, the amounts and types of solvent emissions from the Fort Carson paint booth are listed in Table 22.4.2. Figure 22.4.2. Schematic of the 10 SCFM parabolic trough, solar photoreactor...

Direct Reuse PlasticMaterials

Thu, 14 Jul 2011 05:43:34 GMT

Over 50 of the PET film produced in the world is used as a photographic filmbase. The manufacturers of these materials, mainly Agfa-Gevaert, Eastman Kodak, du Pont de Nemours, Fuji, Minnesota Mining amp Manufacturing, and Konishiroku have long been interested in PET film recovery. An important motivation for the efforts made by these companies is the fact that photographic films are usually coated with one or more layers containing some amount of rather expensive silver derivatives, which have...

References Fvd RecyclingMarkets

Thu, 14 Jul 2011 00:11:12 GMT

AAMVA 2000 , The Commercial Driver's Handbook, American Association of Motor Vehicle Administrators, Washington DC. Aardvark Associates 2001 , Post-Consumer Tyres Shifting Perceptions to Create Opportunities, Working Paper prepared for the Retread Manufacturers Association, Dorset. ADEME 2001 , tude du co t des fili res de traitement des pneus usag s, Rapport Final, ADEME, Paris. AIRP 2002 , Drop in Energy Consumption and Environmental Pollution One Million of Oil Barrels were Saved in 2001...

Myth Recycling Always Protects the Environment GarbageRecycling

Wed, 13 Jul 2011 15:41:38 GMT

Fact Recycling is a manufacturing process, and therefore it too has environmental impact. The U.S. Office of Technology Assessment says that it is not clear whether secondary manufacturing i.e., recycling produces less pollution per ton of material processed than primary manufacturing. Recycling merely changes the nature of pollution sometimes decreasing it, and sometimes increasing it. This effect is particularly apparent in the case of curbside recycling, which is mandated or strongly...

Contributors FeedstockRecycling

Wed, 13 Jul 2011 15:06:21 GMT

King Fahd University of Petroleum and Department of Environmental Sciences, University of Naples II, Via Vivaldi 43, 81100 Caserta, Italy Niigata Plastic Liquefaction Center, Department of Chemical and Materials Engineering, The University of Auckland, Private Bag 92019, Auckland, New Zealand Thallada Bhaskar, Yusaku Sakata Laboratory, Department of Applied Chemistry, Faculty of Engineering, Okayama University, 3-1-1 Tsushima Naka, 700-8530 Okayama, Japan Institute of Materials and...

References PlasticMaterials

Wed, 13 Jul 2011 14:52:26 GMT

1 F. P. Boettcher, ACS Polymer Preprints, 32 2 , 114 1991 . 2. W. De Winter, Die Makromol. Chem., Macromolecular Symposia No. 57, 253 1992 . 3. Anon., Plastics Bulletin, 174, 6 Jan-1992 . 4. N. Basta et al., Chem. Eng., 97, 37 Nov-1990 . 5. Brit. Pat. 1.476.539 1977 to Barber-Colman Co. 6. Anon., Manufacturing Chemist, 66, Mar-1987 . 7. L. Hellemans, R. De Saedeleer, and J. Verheijen, US Pat. 4,008,048 1977 to Agfa-Gevaert. L. Jeurissen and F. De Smedt, Brit. Pat. 1,486,409 1977 to...

Mechanism Of Cracking Processes FeedstockRecycling

Wed, 13 Jul 2011 12:54:27 GMT

The main task of thermal and catalytic cracking is decomposition of large long hydrocarbon molecules into smaller ones. High-molecular feedstock, such as paraffin hydrocarbons and plastic chains produces lower molecular paraffins and a-olefins 5 R-CH2- CH2 x-CH2-CH3 R- CH2 m-CH3 CH3- CH2 -CH CH2 Cracking of primary products, olefins, give higher molecular hydrocarbons by polymerization or tar and coke CH2 CH2 CH3-CH CH2 CH3-CH2-CH2-CH CH2 R-CH2-CH CH2 R-CH2-CH CH2 tar, coke It is generally...

Contents FeedstockRecycling

Wed, 13 Jul 2011 06:02:41 GMT

Contributors Series About the 1 Introduction to Feedstock Recycling of Plastics 3 2 Nomenclature 3 Pyrolysis of Plastics and 3.1 Survey of Previous 3.2 Products from 3.3 Hetero-atoms and Side 3.4 Fundamentals 3.5 Value of the Resulting 4 Feedstock 4.2 Problems with 4.3 Collection 4.4 Logistics of 5 Some Feasible 5.1 Pilot and Industrial Plant 6 Waste 6.2 Plastics 6.3 Rubber 6.4 Plastics Pyrolysis as a Waste Management Option 35 2 Acid-Catalyzed Cracking of Polyolefins Primary Reaction 2...

Catalysts FeedstockRecycling

Tue, 12 Jul 2011 18:47:51 GMT

Monofunctional catalysts are catalysts having only the cracking property. Their structure may be crystalline or amorphous. Typical crystalline cracking catalysts are zeolites. Amorphous catalysts are alumina-silicate, magnesium-silicate, titanium-silicate, titanium-alumina-silicate, titanium-alumina, silica-alumina dispersed in alumina, alumina-borate and other oxides with acidic characteristic. Usually the acidity of catalysts and the C-C cracking function is increasing in the order Al2O3 lt...

Demolition And Dismantling Issues WasteMinimisation

Tue, 12 Jul 2011 18:28:17 GMT

A number of research and development projects have recently been launched or undertaken in Europe with respect to demolition and dismantling issues. Box 6.2 contains a few examples of these projects as well as examples of selective demolition demonstration projects in Denmark. Here selective demolition has been practised several times. Demolition and dismantling techniques have been developed and tested in full scale to achieve this end. Box 6.2 Case studies of European research, development...

Japanese Pavilion Expo Hanover FacilitateReuse

Tue, 12 Jul 2011 16:37:16 GMT

The recycling of building materials and components was one of the design criteria for the Japanese Pavilion. All building elements had to be recycled after the exhibition using a minimum of energy. The foundations were wooden boxes filled with sand - the sand could be reused later in the building industry and the timber planks ended as chipboard. The superstructure was made of cardboard tubes and timber -the cardboard was recycled in the paper industry and the timber ended up as chipboard. All...

Wall Temperature RecyclingFurnace

Tue, 12 Jul 2011 16:14:16 GMT

Refractory wall temperature measurements were made using an Omega OS651 hand-held optical pyrometer with user-selectable emissivity. The instrument has a calibrated range of -20 to 2000 F with an accuracy of 1 , with estimated accuracy of 5 to 2400 F. These measurements were made immediately after the furnace door was lifted. Characterization of wall temperature drop during the time interval for dross removal was also made by making wall temperature measurements after the door was opened, and...

Energy balance EnergyBalance

Tue, 12 Jul 2011 13:54:30 GMT

The energy required to recover and recycle aluminium, glass, paper, polyethylene PE , polyethylene terephthalate PET soft drink bottles , polypropylene PP , polystyrene PS and Polyvinylchloride PVC from domestic refuse, is considerably less than the energy required to produce these materials from raw materials, particularly when the refuse is separated at source, and collected regularly and frequently from this source. The energy requirements for producing these material, from raw materials and...

Plasticswaste FeedstockRecycling

Tue, 12 Jul 2011 12:29:56 GMT

Pre-consumer plastic wastes are generated during the manufacture of virgin plastics from raw materials oil, natural gas, salt, etc. and from the conversion of plastics into plastic products. The nature of waste arising in various processing methods is discussed in 14 . Such waste streams are soiled floor sweepings, skimmings from wastewater treatment, crusts from polymerization reactors , mixed laboratory testing , or off-specifications. Both production and conversion waste are easily...

Polystyrene Cracking FeedstockRecycling

Tue, 12 Jul 2011 05:23:08 GMT

Radical depolymerization of neat PS samples produces large quantities of monomer styrene and chain-end backbiting yields substantial amounts of dimer and trimer. Polymer decomposition proceeds by entirely different processes when a catalyst is present. Repetitive injection GC MS was employed to investigate the primary reaction processes that occur when PS is cracked by silica-alumina, sulfated zirconia, and HZSM-5 74 . These catalysts exhibit a wide range of acidity, but only the HZSM-5...

Myth Our Garbage Will Poison Us GarbageRecycling

Tue, 12 Jul 2011 05:01:41 GMT

Fact Almost anything can pose a theoretical threat, but evidence of actual harm from landfills is almost non-existent, as the Environmental Protection Agency itself acknowledges. The EPA has concluded that landfills constructed according to agency regulations can be expected to cause a total of 5.7 cancer-related deaths over the next 300 years. It isn't household waste, but improperly or illegally dumped industrial wastes that can be harmful. Household recycling programs have no effect on those...

Effect Of Temperature FeedstockRecycling

Tue, 12 Jul 2011 03:46:29 GMT

In the thermal and catalytic degradation of waste thermoplastics, the product yields such as liquid, gas and solid products change depending on the degradation temperature. Walendziewski and Steininger 8 reported the thermal and catalytic degradation of polyethylene in the temperature range 370-450 C. In the case of thermal degradation of polyethylene, an increase in degradation temperature led to an increase of gas and liquid products, but a decrease of residue bp gt 360 C . However, according...

PRODUCTS FROM POLYMERS Major Operating Conditions FeedstockRecycling

Mon, 11 Jul 2011 17:33:01 GMT

The major factors of influence determining the product distribution resulting from plastics pyrolysis are summarized in Table 1.1. Chemical composition plays a dual role 1. Mass conservation dictates that the pyrolysis products, distributed over the three phases, gas, liquid, and solid, consist of the same elements as the raw materials and that their relative amounts are conserved. There is a redistribution of relevant elements during pyrolysis, with hydrogen and chlorine enriching the gas...

Myth Our Garbage Will Bury us GarbageRecycling

Mon, 11 Jul 2011 15:26:38 GMT

Fact Even though the United States is larger, more affluent, and producing more garbage, it now has more landfill capacity than ever before. The erroneous opposite impression comes from old studies that counted the number of landfills which has declined rather than landfill capacity which has grown . There are a few places, like New Jersey, where capacity has shrunk. But the uneven distribution of landfill space is no more important than the uneven distribution of automobile manufacturing....

References 1 RecyclingMarkets

Mon, 11 Jul 2011 14:58:04 GMT

AEA Technology Environment 1998 , Power Generation and The Environment - A UK Perspective, AEAT 3776. Akerlof 1970 , The Market for Lemons Quality Uncertainty and the Market Mechanism, Quarterly Journal of Economics, Vol. 89, No. 3. Al-Ahmad et al. 1991 , Techno-economic Study of Re-refining Waste Lubricating Oils in the Arabian Gulf Countries, Resources, Conservation and Recycling Vol. 6, Issue 1, pp. 71-78. Ali, Mohammad et al. 1996 , Techno-economic Evaluation of Waste Lube Oil Re-refining,...

Introduction GarbageRecycling

Mon, 11 Jul 2011 11:51:02 GMT

Anyone who has visited one of America's many beaches has probably seen a piece of garbage get tossed about by the waves or wash up on shore. It is possible that this piece of trash was littered by a careless pedestrian or blown out of a nearby overflowing trash can. But it is also increasingly possible that this piece of garbage originated not from on land but from a gigantic, swirling, island of garbage in the Pacific Ocean that is growing in size, strength, and danger. For years scientists...

Disposal Of Residuals PlasticMaterials

Mon, 11 Jul 2011 11:24:07 GMT

An important financial element in recycling is residue disposal, whose costs are part of the overall economics of the recovery operation. Four general methods have been advanced for commercial utilization of the light fraction landfill, polymer-enriched fractions, structural materials, and fuels. It is unlikely that any revenue could be generated by landfill, since the non-metallic residue is voluminous, compressible, and lacks the properties desirable in hard-core. Current technology cannot...