Microbial dechlorination alleviates inhibitory effects of PCBs on mouse gamete fertilization in vitro

Article Abstract:

Polychlorinated biphenyls (PCB) are persistent environmental pollutants that elicits toxicity and lethality from humans and animals. Several diseases and abnormalities have been associated with the presence of PCBS in the tissues. A new method called PCB dechlorination has been tested for inhibiting the effects of PCBs. Experiments in mice have shown that microbial dechlorination under anaerobic conditions alleviates the inhibitory effects of PCBs on mouse gamete fertilization.

Health aspects, Methods, Polychlorinated biphenyls, Bioremediation

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Sorption of nonionic organic compounds in soil-water systems containing a micelle-forming surfactant

Article Abstract:

The influence of a micelle-forming surfactant on the solubility of nonionic organic compounds (NOCs) in soil-water systems was investigated by means of two conceptual models. The models were used to represent the apparent distribution coefficient of the organic compounds as a function of the aqueous phase surfactant concentrations. Results indicate that unlike in soil-free systems, surfactants in soil-water systems do not enhancement the solubility of the NOCs.

Analysis, Soil pollution, Organic compounds, Organic water pollutants, Organic water pollution, Surface active agents, Micelles, Solubility

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Reductive dechlorination of carbon tetrachloride in water catalyzed by mineral-supported biomimetic cobalt macrocycles

Article Abstract:

The use of mineral-supported cobalt macrocycles as nonspecific biomimetic catalysts for the reductive dechlorination of halogenated hydrocarbons in water was investigated. Carbon tetrachloride was used as a model compound for halogenated hydrocarbons. The results showed that mineral-supported cobalt macrocycles are catalytically active in the dechlorination of carbon tetrachloride. The initial rates of reaction followed Michaelis-Menten kinetics.

Usage, Catalysts, Biodegradation, Halocarbons, Hydrocarbons, Cobalt

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