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Waste not

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Reviews recovery methods including evaporation, electrodialysis, electrochemical deposition, reverse osmosis and ultrafiltration.

Waste not, want not

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Vulcan Materials' (UK) detinning plant at Hartlepool uses Cutler shredder, which eliminates contamination from used cans before sending scrap to detinning tanks. Detinning was adapted from technique developed in 1960s, however chemical and electrical efficiencies have been improved. Process relies on constant supply of waste material from local waste disposal authorities, and plant is processing 12,000 t of material/year but has capacity of 20,000 t.

Waste not, want not

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Description of effluent treatment and recovery processes, installed by Jessup Engineering, Rochester Hills, MI, at Reliable Plating Works, Milwaukee, WI.

Waste Not, Want Not - A Case Study in Savings from Recycling in a Plating Shop

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Case study of a medium sized plating company and showing savings made by counterflow spray rinsing and evaporative recovery in a Ni + Cr operation while complying with Wisconsin effluent regulations. Details of pumps for sludge pumping.

Waste paint given new life through innovative recycling process.

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Paint recycling by a US company, and the use of a proprietary sieve are discussed. A process was developed that enabled waste emulsion paint to be converted back to high-quality paint. Following this development, the company was set up in 2008, but not without some challenges. There was difficulty in getting the Environmental Agency to agree that recycling waste emulsion paint was a low-risk activity, thus limiting the tons per week that could be treated. However, a new regulation was put into place that enables 'treatment of up to 5 tons a week of non-hazardous paint for use as full specification paint is needed to ensure that enough is produced for commercial selling. Non-inflammable emulsion paint is sourced from household waste reclamation centres; resorting results in an average of 2% of the paint received being rejected. One of the most important parts of the process was to ensure that any remaining contamination is removed from the paint. A sieve company provided a successful on-site trial, screening paint through a proprietary sieve. The sieve's compact design and ease of use were beneficial, after testing the machine on loan, it was bought. A key benefit of the sieve is that is there is no colour contamination from one batch to the next, and cleaning only takes a matter of minutes.

Waste paint management

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Interview where waste paint recycling and disposal strategies are discussed. Histograms show paint volumes broken down by geographical regions for 2009 and 2014 (estimated). Histogram shows growing volume of waste paint collection for recycling in the USA currently in excess of 12 million gallons p.a. Differences in the structure of the paint recycling industry in Europe, USA, Asia etc are discussed.

Waste Pickle Liquor Recovery by Solvent Extraction

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Waste plating solution for lead batteries

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Electrolyte for Pb storage battery consists of waste liquid containing 20-500 mg/1 Ni, Cr, Pb or Cu obtained from electroplating soln., etc.

Waste plus idea equals stroke of luck

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Collection of paint mists by filters comprising series of meshes of decreasing size of opening is described. Paper filters are impregnated with flame-resistant material and are 100% biodegradable.

Waste plus Waste Process for Metal Recovery from Electroplating & Other Effluents

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Title process is based on the (potentially hazardous) mixing of acid and alk. wastes to effect neutralisation and ppt'n. Cyanides can also be dealt with. Analyses of filtrates and process flowsheet are given. Intermediate steps include furnacing for CN destr'n and electrodep'n to recover Cu. 24 refs.

Waste recovery

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Brief introduction to methods of Ni recovery.

Waste Recovery Using Fluidised Bed Reactor

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Description of fluidised bed reactor fed with carbonate sol'n and metal waste, producing solid metal carbonate grains which can be re-used or reclaimed. Org. solvents can be separated in the app'tus. (for a full description, see Nov. '87 issue p. 41 by Schoeller et al).

Waste Recycling and Pollution Control Handbook

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Waste Reduction & Environmental Initiatives Anticipate New US Legislation

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Report on panel discussion where various aspects of environmental legislation are discussed, in terms of new US government and NAFTA (Free Trade Area). Topics include chromium, stormwater wand wastewater, safety & compliance procedures.

Waste reduction and recovery dominate technical reports

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Survey of technical papers as AESF/EPA conference, Orlando, FL.