Recycling, of waste

Reduction and recycling of waste are inevitably site- and plant-specific, but a number of generic approaches and techniques have been used successfully across the United States to reduce many kinds of industrial wastewaters. [Pg.176]

Recycling Use, reuse and recycling of wastes for the original or some other purpose, e.g. input material, materials recovery or energy production d j X ... [Pg.502]

The reuse or recycling of wastes can reduce the amount of freshwater and raw materials required for a process. While looking at the inputs to unit operations, think about the opportunities for reusing and recycling outputs from other operations. Note that if reused wastes are not properly documented, double-counting may occur in the material balance, particularly at the process or complete plant level that is, a waste will be quantified as an output from one process and as an input to another. [Pg.367]

The reaction-catalysing properties of super-critical fluids are described, and some examples are demonstrated of the chemical recycling of waste plastics. 16 refs. Articles from this journal can be requested for translation by subscribers to the Rapra produced International Polymer Science and Technology. [Pg.35]

Progress in Rubber and Plastics Technology 16, No.l, March 2000, p.61-8 CHEMICAL RECYCLING OF WASTE SATURATED POLYESTERS AND URETHANE POLYMERS TO YIELD RAW MATERIALS FOR THE PRODUCTION OF POLYURETHANES Kacperski M Spychaj T Szczecin,Polytechnic... [Pg.42]

Teehniques are reviewed for the ehemical recycling of waste saturated polyesters (PETP and PBTP), and of waste... [Pg.47]

Techniques for chemical recycling of waste saturated polyesters, mainly poly(ethylene terephthalate) and of waste polyurethanes to produce polyurethanes are reviewed. 29 refs. Articles from this journal can be... [Pg.54]

Kunststoffe Plast Europe 85,No.2, Feb.1995, p.16-23 FEEDSTOCK RECYCLING OF WASTE PLASTICS... [Pg.60]

Polymers with hetero-atoms in the chain are suitable for chemical recycling of waste materials. In addition to depolymerisation (nylon 6) and solvolysis (nylon 6,6, PETP, PU) the degradation of aliphatic polyamides with dicarboxylic acids, diamines and cyclic anhydrides, especially trimellitic anhydride, becomes more and more important. The utilisation of the obtained fragments is described. [Pg.73]

Chicago, 11., 26th-29th Sept. 1995, p.270-4. 43C6 TERTIARY RECYCLING OF WASTE POLYURETHANE CAR SEAT FOAM Tatsumoto K Elam C C Looker M J Evans R J US,National Renewable Energy Laboratory (SPl,Polyurethane Div.)... [Pg.79]

Industrial Engineering Chemistry Research 34, No.12, Dec.1995, p.4514-9 CHEMICAL RECYCLING OF WASTE PS INTO STYRENE OVER SOLID ACIDS AND BASES... [Pg.81]

Chemical recycling of waste mbbers means breaking down of the macromolecules into oligomers or monomers. Different chemical recycling technologies include glycolysis, methanolysis, and... [Pg.1045]

ChE will be challenged to develop creative process for recycling of waste materials, rather than burning or discarding them. One potential process is bioremediation, using genetically modified microorganisms to decompose the waste. This approach has already been applied to the treatment of oil spills. [Pg.3]

In Japan the amount of waste poly(vinyl chloride) (PVC) has been sharply increasing since disposal of building materials such as pipe and roof liners with long service life has been started recently. It was estimated to be approximately one million tons in FY 2000, and it is predicted to increase further to approximately 1.8 million tons in FY 2020. Since the landfill sites run short and the incineration to reduce its volume produces dioxins and corrodes boiler tube by hydrogen chloride, development of a safe and inexpensive technology for the recycling of waste PVC is one of the most urgent issues. [Pg.397]

Waste accumulated speculatively. In order to encourage recycling of wastes as well as to ensure that materials are recycled and not simply stored to avoid regulation, U.S. EPA established a provision to encourage facilities to recycle sufficient amounts in a timely manner. This provision designates as solid wastes those materials that are accumulated speculatively. [Pg.489]

In Georgia, due to lack of financial resources it is difficult to take appropriate measures for utilization, segregation, recovering and recycling of waste. In most cases, there is a complete absence of routine monitoring for a variety of reasons. These are old analytical laboratory equipment,... [Pg.215]

Preparative electrochemistry in both its modes -preventive (electrosynthesis) and curative (elimination, recovery, and recycling of wastes) is finally catching up. [Pg.122]

The recycling of wastes is difficult for thermosets and composites because of the cross-linking and/or the presence of fibres broken during recycling. [Pg.22]

Recycling of wastes is the preferable waste management method after source reduction opportunities have been exhausted. Recycling can be performed within the process itself, within the plant, or off-site, and can involve reuse of the entire waste stream, or recovery of a part of it. Recovery of the stream s metal content can be achieved through operations such as electrolytic recovery, reverse osmosis, and ion exchange. [Pg.7]

Expand the reusability and recyclability of wastes and products and the demand for recycled materials. Research is needed to improve the reusability and recyclability of wastes and products, and to increase the capacity and demand for recycled materials in production processes. Such improvements will prolong the useful life of materials and reduce the environmental impacts of wastes and pollutants from all waste streams. [Pg.169]

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