Accession Number:

AD0769293

Title:

Cyanide Waste Treatment Utilizing Catalytic Oxidation.

Descriptive Note:

Technical rept. 23 May-25 Apr 73,

Corporate Author:

THIOKOL CHEMICAL CORP BRIGHAM CITY UTAH

Personal Author(s):

• Woolhiser,P. H.
• Clark,D. P.

Report Date:

1973-10-01

Pagination or Media Count:

93.0

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 14 gallon per minute gpm of 2,000 mg1 total cyanide waste produced effluent streams containing undetectable amounts of cyanide under 0.01 mg1 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

Descriptors:

• *CYANIDES
• *WASTE TREATMENT
• PROTOTYPES
• ELECTROPLATING
• WASTES(INDUSTRIAL)
• PHOTOGRAPHIC PROCESSING
• CATALYSTS
• OXIDATION
• COBALT
• CYANATES
• CHLORINE
• COLORIMETRIC ANALYSIS
• CHEMICAL ANALYSIS
• ELECTROLYSIS
• PRECIPITATION
• CHLORINATION
• CONTROL
• WATER POLLUTION
• COST ESTIMATES
• FABRICATION

Subject Categories:

• Industrial Chemistry and Chemical Processing
• Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE