Effects of nature organic matters an

Effects of nature organic matters and hydrated metal oxides on the anaerobic degradation of lindane,p,p-DDT and HCB in s

Effects of natural organic matters(NOM) and hydrated metal oxides(HMO) in sediments on the anaerobic degradation of γ-666, p,p'-DDT and HCB were investigated by means of removing NOM and HMO in Liaohe River sediments sequentially. The results showed that the anaerobic degradation of γ-666, p,p'-DDT and HCB followed pseudo-first-order kinetics in different sediments; But, the extents and rates of degradation were different, even the other conditions remained the same. Anaerobic degradation rates of γ-666, p,p'-DDT and HCB were 0.020 d-1, 0.009 d-1 and 0.035 month-1 respectively for the sediments without additional carbon resources. However, with addition of carbon resources, the anaerobic degradation rates of γ-666, p, p'-DDT and HCB were 0.071d-1, 0.054d-1 and 0.088 month-1 in the original sediments respectively. After removing NOM, the rates were decreased to 0.047 d-1, 0.037 d-1 and 0.066 month-1; in the sediments removed NOM and HMO, the rates were increased to 0.067d-1, 0.059 d-1 and 0.086 month-1. These results indicated that NOM in the sediments accelerated the anaerobic degradation of γ-666, p,p'-DDT and HCB; the HMO inhibited the anaerobic degradation of γ-666, p,p'-DDT and HCB.

作 者： ZHAO Xu QUAN Xie ZHAO Hui-min CHEN Jing-wen CHEN Shou ZHAO Ya-zhi   作者单位： School of Environmental Science and Technology, Dalian University of Technology, Dalian 116012, China  刊 名： 环境科学学报(英文版)  ISTIC SCI 英文刊名： JOURNAL OF ENVIRONMENTAL SCIENCES  年，卷(期)： 2003 15(5)  分类号： X52 X53  关键词： lindane   p,p'-DDT   HCB   anaerobic degradation   sediments   natural organic matters  

【Effects of nature organic matters an】相关文章：

The Nature of Poetry05-04

Cause and Effects of Iron Deficiencies05-04

Surface microlayer enrichment of volatile organic compounds and semivolatile organic compounds in drinking water source04-26

Effects of Formaldehyde Inhalation on Lung of Rats04-27

Phytoremediation and its models for organic contaminated soils04-26

Variation Law of Organic Contaminant in Lijiang River04-26

The new economy of nature :can carbon pay for nature conservation?The case of the Hong Kong Country Parks04-26

Isolation and characterization of deodorizing bacteria for organic sulfide malodor04-25

Environmental Effects on Microstructural Stability of SiC/SiC Composites04-26

Evaluation of dust activity and climate effects in North China04-26