Cyanide Waste Treatment Utilizing Catalytic Oxidation.
Abstract
Electroplating operations and color photograph processing are two major sources of liquid cyanide wastes. To meet state effluent standards, a system using a proprietary cobalt-based catalyst and chlorine-producing electrolytic cells was evaluated with actual photographic and electroplating waste. A literature search and laboratory evaluation was conducted to determine processes that could be used to supplement the catalytic oxidation system. A prototype catalytic oxidation system capable of treating 1/4 gallon per minute (gpm) of 2,000 mg/1 total cyanide waste produced effluent streams containing undetectable amounts of cyanide (under 0.01 mg/1) with copper plating and nickel strip feeds. Treatment of photographic wastes produced an 87 to 94 percent reduction of total cyanide. The catalytic oxidation system has a strong potential for decreasing the operation costs of cyanide destruction systems. System designs are given for two full-size cyanide waste treatment systems. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1973
- Accession Number
- AD0769293
Entities
People
- D. P. Clark
- P. H. Woolhiser