Biochemical Studies on Accelerated Treatment of Thiocyanate by Activated Sludge using Growth Factors such as Pyruvate

摘要

Summary.Micro‐organisms in activated sludge oxidizing thiocyanate behave in a similar way to thiobacilli. Organic compounds such as pyruvate stimulate thiocyanate oxidation and in so doing become incorporated into cellular material; such metabolites are not oxidized to produce energy. The presence of thiocyanate in batch cultures accelerated pyruvate uptake. The carbon of thiocyanate is recovered mainly as CO2; carbonate becomes incorporated into cellular protein, but less so in sludges previously treated with pyruvate. TCA cycle enzymes are not altered appreciably after pyruvate is added to activated sludg