Anaerobic biodegradation of PAH in river sediment treated with different additives
Excavation of the polluted sediments is a remediation approach for the polluted rivers and streams,when the excavated sediments can be reasonably detoxified.In this work,PAHs in fiver sediments was removed by mixing with different additives such as acetate,lactate,and spent mushroom compost (SMC),to test the ability of indigenous microorganisms on anaerobic PAH degradation.The activities of dehydrogenase and polyphenol oxidase were also investigated.9% of phenanthrene and no anthracene in the fiver sediments can be degraded naturally in 30 days and increased to 22% and 53%,28% and 63%,44% and 53% in the presence of 40mM/kg acetate,40mM/kg lactate and 10% SMC,respectively.The dehydrogenase activities increased remarkably from 23 to 225,,456 and 920 mg triphenylformazan/kg/24hr in sediments amended with acetate,lactate and SMC respectively.The results supported that readily degradable carbon sources boost PAH anaerobic biodegradation dramatically.SMC is recommended as a potential amendment for intrinsic anaerobic biodegradation of PAH in polluted river sediments.
PAH anaerobic degradation sediment additives dehydrogenase activity
Lianghu Su Haiyan Zhou Guangzhai Guo Aihua Zhao Youcai Zhao
The State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science an Shanghai Urban Construction Investment & Development General Co., Shanghai 200020, China
国际会议
The Seventh International Conference on Waste Management and Technology(第七届固体废物管理与技术国际会议(ICWMT7))
北京
英文
311-319
2012-09-05（万方平台首次上网日期，不代表论文的发表时间）