You are here:
ASSESSING THE INTERACTIONS OF ORGANIC COMPOUNDS DURING BIODEGRADATION OF COMPLEX WASTE MIXTURES BY NATURALLY OCCURRING BACTERIAL ASSEMBLAGES
Citation:
Hwang, H., R. Hodson, AND D. Lewis. ASSESSING THE INTERACTIONS OF ORGANIC COMPOUNDS DURING BIODEGRADATION OF COMPLEX WASTE MIXTURES BY NATURALLY OCCURRING BACTERIAL ASSEMBLAGES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-89/053 (NTIS PB89197503).
Description:
Selected organic chemicals were tested to determine the minimum concentrations at which complete inhibition of microbial degradative processes occurred. omplete inhibition did not occur at less than 2 g/L phenols 10 g/L toluene or n-butanol, and 100 g/L acetone, benzene or methanol. onsequently, microbial degradative processes may play a significant role in the abatement of even very high organic pollutant concentrations. lucose utilization and thymidine uptake rates were tested as indicative of the toxic effects of organic pollutants. Both methods accurately indicated the concentrations of organic pollutants required to cause cessation of activities could serve as indicators of degradative inhibitioni in lieu of degradative studies, when analytical processes for test organics are expensive or unavailable. egradative kinetics of the high organic chemical concentrations followed typical multiphasic kinetic patterns, which tended to yield pseudo first-order degradation rates over a wide range of chemical concentrations, except when chemical concentrations were sufficiently high to elicit metabolic inhibition.