铁氧化物与丙酸对土壤中六氯苯厌氧降解影响

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Abstract To investigate the effects of iron oxide,propionic acid and their interaction on the reductive dechlorination of hexachlorobenzene (HCB) in soils and their reaction mechanisms,an anaerobic incubation experiment was conducted in Hydragric Acrisols with five treatments:sterile control,control,propionic acid,goethite,and propionic acid + goethite.Results showed that HCB residues for these five treatments decreased by 26.9%,48.5%,63.4%,56.9%,and 72.9% compared to the initial quantities,respectively,after 40d of incubation,and pentachlorobenzene (PeCB) was the dominant product of HCB dechlorination.The addition of propionic acid significantly accelerated the reductive dechlorination degradation of HCB throughout the incubation.The application of goethite obviously promoted HCB dechlorination in the early incubation period.The application of propionic acid and goethite resulted in a synergistic effect on accelerating the dechlorination of HCB.

Key words： hexachlorobenzene reductive dechlorination goethite propionic acid hydragric acrisols

Received: 26 July 2017

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	LIU Cui-ying
	WANG Yu
	MA Yu-chun

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LIU Cui-ying,WANG Yu,MA Yu-chun. Effect of iron oxide and propionic acid on anaerobic degradation of hexachlorobenzene in soil[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(3): 1073-1080.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I3/1073

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