Application of sewage sludge and intermittent aeration strategy to the bioremediation of DDT- and HCH-contaminated soil

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	Application of sewage sludge and intermittent aeration strategy to the bioremediation of DDT- and HCH-contaminated soil
	Chen Tongbin; Lei Mei; Yang Jun
	2014
关键词	Sewage sludge Bacteria Bacteriology Biodegradation Bioremediation Biotechnology Dechlorination Soil pollution
英文摘要	Adding organic amendments to stimulate the biodegradation of pesticides is a subject of ongoing interest. The effect of sewage sludge on the bioremediation of dichlorodiphenyltrichloroethane (DDT) and hexachlorocyclohexane (HCH) contaminated soil was investigated in bench scale experiments, and intermittent aeration strategy was also used in this study to form an anaerobic-aerobic cycle. Bioremediation of DDT and HCH was enhanced with the addition of sewage sludge and the intermittent aeration. The removal rates of HCH and DDT were raised by 16.8%-80.8% in 10. days. Sewage sludge increased the organic carbon content from 6.2 to 218. g/kg, and it could also introduce efficient degradation microbes to soil, including Pseudomonas sp., Bacillus sp. and Sphingomonas sp. The unaerated phase enhanced the anaerobic dechlorination of DDT and HCH, and anaerobic removal rates of -HCH, o,p'-DDT and p,p'-DDT accounted for more than 50% of the total removal rates, but the content of -HCH declined more in the aerobic phase. 2014.
出处	Journal of Environmental Sciences (China)
卷	26 期:8 页:1673-1680
收录类别	EI
语种	英语
内容类型	EI期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/31309]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Chen Tongbin,Lei Mei,Yang Jun. Application of sewage sludge and intermittent aeration strategy to the bioremediation of DDT- and HCH-contaminated soil. 2014.