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Chemical Waste Management

This article provides guidelines for the proper management of chemical waste, including requirements for the waste container, accumulation guidelines, and tips for waste minimization to reduce costs.

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Chemical Waste Management

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  1. Chemical Waste Management YerimYeon 2013, January, 22

  2. Requirements for the Waste Container • All waste containers must be… • Clearly labeled with their contents. • Paint over or remove any old labels. • 2. Kept at or near (immediate vicinity) the site of generation and under control of the generator. • 3. Compatible with contents (e.g. acid should not be stored in metal cans). • 4. Closed at all times except when waste is being added to container. • 5. Properly identified with completed waste tags before pickup is requested. • 6. Safe for transport with non-leaking screw-on caps. • 7. Filled to safe level (below the bottom of the neck of the container or a 2-inch head • space for 55 gallon drums). Source from EHS homepage: http://www.utexas.edu/safety/ehs/disposal/procedures/1_regulated_wastes.html

  3. Accumulation Guideline • - keep different hazardous waste separately for correct disposal method and cost efficiency. • - do not mix incompatible waste in the same container or place waste • in an unwashed container. • 1. Halogenated solvents (e.g., methylene chloride, chloroform, carbon tetrachloride) • Note: Disposal of non-halogenated solvents contaminated with halogens costs 4-5 • times more than that of non-halogenated solvents. • 2. Used oil must be kept as uncontaminated as possible in order to be recycled. • 3. Bases • 4. Metal-bearing waste (e.g. barium, cadmium, chromium, lead, mercury, • nickel, selenium, silver, and thallium) • 5. flammableandcorrosive • 6. Special wastes (e.g. cyanide, sulfide, pesticides, oxidizers, organic acids, explosives • and peroxides) should be collected individually whenever possible. Source from EHS homepage: http://www.utexas.edu/safety/ehs/disposal/procedures/1_regulated_wastes.html

  4. Minimization of waste and Cost • Inventory • Dispose expired or unused chemicals • Maintain labels and containers in good condition • Check inventory before ordering to avoid duplication • Purchasing • Purchase only the amount you need. • Check catalogs for quantity choices. • Use • Reduce the scale of the experiment. • Share unused portions with other researchers. • Use alternate research methods. • Select less hazardous chemicals. • Reuse chemicals before disposal if possible. • Accumulation • Separate non-halogenated from halogenated solvents. • Separate acids from acids/metal mixtures. Source from Stanford university: http://www.stanford.edu/dept/EHS/prod/enviro/waste/guide/refguide.pdf

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