Effect of iron oxide and propionic acid on anaerobic degradation of hexachlorobenzene in soil
LIU Cui-ying1,2, WANG Yu3, MA Yu-chun3
1. Collaborative Innovation Centre on Forecast and Evaluation of Meteorological Disasters/Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China; 2. Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; 3. College of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China
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.
刘翠英, 王宇, 马煜春. 铁氧化物与丙酸对土壤中六氯苯厌氧降解影响[J]. 中国环境科学, 2018, 38(3): 1073-1080.
LIU Cui-ying, WANG Yu, MA Yu-chun. Effect of iron oxide and propionic acid on anaerobic degradation of hexachlorobenzene in soil. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(3): 1073-1080.
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