Preliminary evaluation of the biological oxidation of thiocyanates. Progress report, November 30, 1977--February 28, 1978

Technical Report · Wed Mar 01 04:00:00 EST 1978

DOI:https://doi.org/10.2172/7048914· OSTI ID:7048914

Neufeld, R. D.; Valiknac, T.

Acclimated biological cultures were developed from activated sludge taken from coke plant biological waste treatment facilities. These cultures are capable of degrading potassium thiocyanate from an original concentration of 2000 mg/l SCN to less than 1 mg/l in an aeration period of 9 hours. pH inhibition appears to be significant at values greater than 7.6. Substrate inhibition occurs at concentrations of thiocyanate greater than 500 mg/l. Air stripping of thiocyanate does not appear to occur at neutral pH value. Preliminary assessments indicate that aerobic biological organisms may play a major role in the removal of aqueous thiocyanate as found in the wastewasters from the gasification of certain coals.

• Research Organization: Pittsburgh Univ., Pa. (USA). Dept. of Civil Engineering
• OSTI ID: 7048914
• Report Number(s): COO-4502-2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404 -- Coal
Lignite
& Peat-- Gasification
010800* -- Coal
Lignite
& Peat-- Waste Management
AEROBIC CONDITIONS
BIODEGRADATION
CARBONIC ACID DERIVATIVES
CHEMICAL REACTIONS
COAL GASIFICATION
DECOMPOSITION
GASIFICATION
HYDROGEN COMPOUNDS
LIQUID WASTES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PH VALUE
THIOCYANATES
WASTE WATER
WASTES
WATER
WATER TREATMENT