Premium
Degradation of Tetrachloroethene by Several Co‐metabolism Substrates in Groundwater
Author(s) -
Jinghua SHI,
Fei LIU,
Honghan CHEN,
Ye LI
Publication year - 2007
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/j.1755-6724.2007.tb01006.x
Subject(s) - formate , biodegradation , chemistry , anaerobic exercise , methanol , ethanol , degradation (telecommunications) , environmental chemistry , reaction rate constant , metabolism , sewage , nuclear chemistry , kinetics , organic chemistry , biochemistry , environmental engineering , catalysis , biology , environmental science , physiology , telecommunications , physics , quantum mechanics , computer science
Tetrachloroethene (PCE) is biodegraded by reductive dechlorination with co‐metabolism substrates under anaerobic conditions. By inoculating sludge from an anaerobic pool, a biodegradation test of PCE is conducted in the anaerobic condition. In the test, several substrates including methanol, ethanol, formate, acetate, lactate and glucose, are conducive to the conversion from PCE to TCE and 1,1‐DCE. The results show the microbe can be cultivated well under the anaerobic circumstances of mixture of sewage (sludge) and soil with the index of COD after eleven days. Degradation of PCE accords with one order reaction kinetics equation. The sequence of the reaction rate constant is K acetate >K glucose >K lactate >K ethanol >K formate >K methanol , and acetate is an outstanding co‐metabolism substratum whose reaction rate constant is 0.6632d −1 .