Anaerobic Biodegradation of Tetrachloroethylene with Acetic Acid as Cometabolism Substrate under Anaerobic Condition

Abstract

A series of batch‐type experiments with acetate acid as the primary substrate were performed using enrichment cultures developed from the anaerobic sludge to investigate the effect of acetate acid on tetrachloroethylene (PCE) biodegradation. Experimental results indicated that acetate acid was an efficient electron donor in affecting the biotransformability of PCE. Trichloroethylene (TCE) was the primary dehalogenation product, and small amounts of dichloroethylenes (DCEs) were also detected. No significant further DCEs degradation was detected. PCE degradation rate in the experiment was 36.6 times faster than background rate in natural groundwater.

Role of Gastrointestinal Microbiota from Crucian Carp in Microbial Transformation and Estrogenicity Modification of Novel Plastic Additives

“…However, no increase in the 48 h degradation ratio for TBECH, a poorly degradable chemical, was observed with the elevated glucose concentrations (Figure S1), although an increased glucose supply also resulted in a higher growth of both the G- and I- microbiota. Our finding that additional carbon supplements can enhance BPA degradation was consistent with previous studies on the biodegradation of other organic pollutants under anaerobic conditions. − The cometabolism can be attributed to the enzymes necessary for pollutant degradation by glucose as revealed by the elevated bacterial abundance (Figure B) . The results indicate that the microbial degradation of certain pollutants by GI microorganisms is closely related to the nutritional status of their host.…”

Tetrachloroethylene Removal Rate from Aqueous Solutions by Pumice Doped with Copper: An Evaluation of the Effect of pH

“…This compound is widely used as a cleaning solvent for grease, oil, and other industrial fluids in dry cleaning and textile industries. Consequently, it may enter aquatic environments through different industries and domestic wastewater (4). PCE compounds are potentially hazardous for human health and the environment (5).…”