Aerobic bio-oxidation of thiocyanates: development of design parameters. Progress report, April 1, 1978-April 1, 1979

• Main Authors: Neufeld, R.D., Lubon, P., Mattson, L.
• Format: Report
• Language: English
• Published: Pittsburgh Univ., PA (USA). Dept. of Civil Engineering 1979
• Subjects: Aerobic Conditions; Elements; Chemical Reactions; 01 Coal; Lignite; And Peat; Organic Compounds; 09 Biomass Fuels; Wastes; Thiocyanates; Water 010800* > Coal; & Peat > Waste Management; Nitrogen Compounds; Microorganisms; 140504 > Solar Energy Conversion > Biomass Production & Conversion > (-1989); Kinetics; Oxygen Compounds; 090320 > Inorganic Hydrogen Compound Fuels > Preparation > (1976-1989); Biochemical Reaction Kinetics; Biodegradation; Sulfates; Hydrides; Waste Water; Reaction Kinetics; Ammonia; Sulfur Compounds; Nitrogen; Industrial Plants; 10 Synthetic Fuels; Carbonic Acid Derivatives; Liquid Wastes; Organic Sulfur Compounds; Fluids; Cryogenic Fluids; Hydrogen Compounds; Decomposition; Sulfur; Nitrogen Hydrides; Coal Gasification Plants; Nonmetals; Carbonic acid
• Online Access: https://doi.org/10.2172/5862617; https://digital.library.unt.edu/ark:/67531/metadc1102320/

The source of coal conversion wastewater thiocyanates is reviewed. Based on laboratory studies, the biokinetics of aerobic degradation of thiocyanate is quantified and found to follow a substrate inhibition model. A design curve based on theoretical and laboratory considerations is developed. A material balance for sulfur and nitrogen as originally found in the SCN complex is presented. During aerobic degradation of SCN, sulfur goes to sulfate, and nitrogen goes to ammonia. During anaerobic degradation of SCN, sulfur goes to sulfide. Thiocyanate was the sole source of carbon, nitrogen, and sulfur available to the microorganisms during the course of the study.