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

作     者：ZHAO Xu QUAN Xie ZHAO Hui min CHEN Jing wen CHEN Shou ZHAO Ya zhi 

作者机构：School of Environmental Science and TechnologyDalian University of TechnologyDalian 116012China. 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报(英文版))

年 卷 期：2003年第15卷第5期

页      面：618-621页

核心收录：

学科分类：082803[工学-农业生物环境与能源工程] 08[工学] 0828[工学-农业工程] 

基　　金：TheNationalNaturalScienceFoundationofChina(No.29777002) MinistryofEducation(No.0 0 0 2 8) 

主　　题：lindane p,p' DDT HCB anaerobic degradation sediments natural organic matters 

摘      要：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 0 071 d -1 , 0 054 d -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 0 067 d -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.