Treatment technology evaluation for aqueous metal and cyanide bearing hazardous wastes (F007)
Journal Article
·
· Journal of the Air and Waste Management Association; (United States)
- Univ. of Cincinnati, OH (United States)
- Environmental Protection Agency, Cincinnati, OH (United States)
As a result of recent developments in the area of hazardous waste management, the US Environmental Protection Agency is evaluating the performance of various technologies for the treatment and/or the destruction of certain wastes that are presently being disposed of in landfills and surface impoundments. As a part of this program, the Univ. of Cincinnati is testing currently available treatment technologies that are applicable to metal- and cyanide-bearing hazardous wastes at the US EPA Test and Evaluation Facility in Cincinnati, Ohio. The following unit processes have been evaluated: alkaline chlorination, lime precipitation/flocculation/settling, multi-media filtration, anion exchange, and cation exchange. Examination of several process configurations, utilizing the above-mentioned unit processes, did not produce any treatment train that could prevent codeposition of cyanides and metals in the sludges when the feed stream contained mixed metals and complexed cyanides. It was also determined that special anion exchange resins are capable of removing the complexed cyanides that are not destroyed by alkaline chlorination. Concentration of each of the metals in the final effluent from the cation exchange unit was less than 0.4 mg/L.
- OSTI ID:
- 5113298
- Journal Information:
- Journal of the Air and Waste Management Association; (United States), Journal Name: Journal of the Air and Waste Management Association; (United States) Vol. 41:6; ISSN JAWAE; ISSN 1047-3289
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
CYANIDES
ELEMENTS
HAZARDOUS MATERIALS
MANAGEMENT
MATERIALS
METALS
NATIONAL ORGANIZATIONS
PERFORMANCE TESTING
REMOVAL
SLUDGES
TECHNOLOGY ASSESSMENT
TESTING
US EPA
US ORGANIZATIONS
WASTE MANAGEMENT
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
CYANIDES
ELEMENTS
HAZARDOUS MATERIALS
MANAGEMENT
MATERIALS
METALS
NATIONAL ORGANIZATIONS
PERFORMANCE TESTING
REMOVAL
SLUDGES
TECHNOLOGY ASSESSMENT
TESTING
US EPA
US ORGANIZATIONS
WASTE MANAGEMENT