Microbial mineralization of 2,4,5-trichlorophenol in soil
Article Abstract:
A study of the mineralization of (U-14C-2,4,5)-trichlorophenol (TCP) in soil not previously exposed to chloroorganics revealed that soil mineralized 15% to 45% of 2,4,5-TCP after 60 days of incubation when it was exposed to 1, 10 or 100 ppm of this compound. Minimal half-lives of 35-170 days were estimated from rates of 14CO2 evolution in soil incubated with 1-100 ppm of 2,4,5-TCP. Soil exposed to 500 ppm or in incubations with sterile soil with 10 or 100 ppm of 2,4,5-TCP was mineralized by less than 2% The rate of mineralization of an additional amount of this pollutant increased in soil preincubated 30 days with 10 or 100 ppm of 2,4,5-TCP.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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Pathway and rate of chlorophenol transformation in anaerobic estuarine sediment
Article Abstract:
Chlorophenols (CPs) can be classified into two groups, namely, those transformed exclusively by dechlorination and those transformed mainly through non-dechlorination pathway(s). This was gleaned from the results of an examination of the kinetics and pathways of chlorophenol transformations in an anaerobic estuarine sediment collected from the mouth of Japan's Tsurumi River and the contribution of different transformation pathways. A pathway-dependent first-order dechlorination rate constant was calculated from the contribution of each pathway, which indicated a preferential o-chlorine removal compared to m- and p-chlorine.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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Degradation of 4-chlorophenol, 3,4-dichloroaniline, and 2,4,6-trinitrotoluene in an electrohydraulic discharge reactor
Article Abstract:
The electrohydraulic discharge (EHD) process offers an alternative technology for the treatment of hazardous chemical liquid wastes. It occurs inside an EHD reactor which has a pulsed-power electrical discharge circuit for storing electrical energy. Energy is injected into an aqueous solution through a plasma channel which is created by the reactor's electrodes. The application of the EHD process to degrade 4-chlorophenol, 3,4-dichloroaniline, and 2,4,6-trinitrotoluene is presented.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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