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

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 inhi...

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Bibliographic Details
Main Authors: Neufeld, R.D., Valiknac, T.
Format: Report
Language:English
Published: Pittsburgh Univ., Pa. (USA). Dept. of Civil Engineering 1978
Subjects:
Coal Gasification
Aerobic Conditions
010404 > Coal
Lignite
& Peat > Gasification
Chemical Reactions
Carbonic Acid Derivatives
Hydrogen Compounds
Organic Compounds
01 Coal
And Peat
Liquid Wastes
Gasification
Wastes
Waste Water
Water Treatment
Water 010800* > Coal
& Peat > Waste Management
Decomposition
Ph Value
Thiocyanates
Biodegradation
Organic Sulfur Compounds
Oxygen Compounds
Carbonic acid
Online Access:https://doi.org/10.2172/7048914
https://digital.library.unt.edu/ark:/67531/metadc1192969/
Description
Summary: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.

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