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The kinetics of the degradation of chloroform and benzene in anaerobic sediment from the River Rhine

The kinetics of the degradation of chloroform and benzene in anaerobic sediment from the River Rhine In anaerobic methanogenic sediment microcosms14C labelled chloroform was degraded mainly to carbon dioxide. At a concentration of 4 μg.l−1 the mineralization followed first order kinetics with a half life of 12 days at 10°C and 2.6 days at 20°C. At a concentration of 400 μg.l−1 the mineralization rate increased with time and followed logarithmic kinetics with a μmax of 0.02.d−1 at 10°C. The logarithmic kinetics can be explained by growth of the bacteria on the higher concentration of chloroform with a generation time of 35 days. Shaking and oxygenation did not inhibit the mineralization of chloroform, probably because of bacterial consumption of the dissolved oxygen. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aquatic Ecology Springer Journals

The kinetics of the degradation of chloroform and benzene in anaerobic sediment from the River Rhine

Aquatic Ecology , Volume 24 (1) – Nov 4, 2005

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References (13)

Publisher
Springer Journals
Copyright
Copyright
Subject
Life Sciences; Freshwater & Marine Ecology; Ecosystems
ISSN
1386-2588
eISSN
1573-5125
DOI
10.1007/BF02256745
Publisher site
See Article on Publisher Site

Abstract

In anaerobic methanogenic sediment microcosms14C labelled chloroform was degraded mainly to carbon dioxide. At a concentration of 4 μg.l−1 the mineralization followed first order kinetics with a half life of 12 days at 10°C and 2.6 days at 20°C. At a concentration of 400 μg.l−1 the mineralization rate increased with time and followed logarithmic kinetics with a μmax of 0.02.d−1 at 10°C. The logarithmic kinetics can be explained by growth of the bacteria on the higher concentration of chloroform with a generation time of 35 days. Shaking and oxygenation did not inhibit the mineralization of chloroform, probably because of bacterial consumption of the dissolved oxygen.

Journal

Aquatic EcologySpringer Journals

Published: Nov 4, 2005

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