Biodegradation of Polycyclic Aromatic Hydrocarbons (PAH) in marine sediment under denitrifying conditions

被引：25

作者：

MacRae, JD ^{[1
]}

Hall, KJ ^{[1
]}

机构：

[1] Univ British Columbia, Dept Civil Engn, Vancouver, BC V6T 1W4, Canada

来源：

WATER SCIENCE AND TECHNOLOGY | 1998年 / 38卷 / 11期

关键词：

biodegradation; bioremediation; denitrification; marine sediment; Polycyclic Aromatic Hydrocarbons; sediment;

D O I：

10.1016/S0273-1223(98)00653-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Polycyclic Aromatic Hydrocarbons (PAH) are common environmental pollutants that have been linked to cancerous lesions in bottom fish. In this research, the feasibility of using nitrate as an alternative electron acceptor to stimulate PAM-degradation in anoxic marine sediment was investigated. PAM could be degraded under denitrifying conditions as long as other nutrients were not limiting. The half lives of low molecular weight PAH ranged from approximately 33-88 days. Degradation of high molecular weight PAM was slower, or not observed. Half lives ranged from 143-812 days. Nitrate may be applied to sediments in situ or used in bioreactors to reduce the cost of bioremediation operations ex situ. (C) 1998 Published by Elsevier Science Ltd on behalf of the IAWQ. All rights reserved.

引用

页码：177 / 185

页数：9

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