Fe(Ⅱ)催化纳米过氧化钙降解混合氯代烃  

Degradation of complex chlorinated hydrocarbons by Fe(Ⅱ) catalyzed nano calcium peroxide

作　　者：马鸣[1] 王岽[1] 孙勇 吕树光[2] 郦和生[1] MA Ming;WANG Dong;SUN Yong;LÜ Shuguang;LI Hesheng(Sinopec(Beijing)Research Institute of Chemical Industry Co.Ltd.,Beijing 100013,China;State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process,School of Resources and Environmental Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]中石化(北京)化工研究院有限公司,北京100013 [2]华东理工大学资源与环境工程学院国家环境保护化工过程环境风险评价与控制重点实验室,上海200237

出　　处：《化工环保》2023年第1期36-41,共6页Environmental Protection of Chemical Industry

基　　金：国家重点研发计划项目(2018YFC1803304);中国石油化工股份有限公司科技开发项目(321093)。

摘　　要：针对地下水中常见的6种氯代烃污染物三氯乙烯(TCE)、四氯乙烯(PCE)、氯仿(CF)、四氯化碳(CT)、1,2-二氯乙烷(DCA)和1,1,1-三氯乙烷(TCA),对比研究了Fe(Ⅱ)催化纳米过氧化钙(nCaO2)体系及柠檬酸(CA)或硫化亚铁(FeS)强化体系对单一氯代烃和混合氯代烃的去除效果。实验结果表明:混合氯代烃降解过程中各污染物间存在抑制或促进作用;CA和FeS的加入均可促进氯代烯烃(TCE和PCE)的降解,且FeS的促进作用优于CA;当实际氯代烃污染地下水中氯代烯烃(TCE或PCE)的浓度较高,而氯代烷烃(CF、CT、DCA或TCA)的浓度较低时,可灵活选用nCaO2-Fe(Ⅱ)及其强化体系进行修复。For 6 common chlorinated hydrocarbon contaminants in groundwater,including trichloroethylene(TCE),tetrachloroethylene(PCE),chloroform(CF),carbon tetrachloride(CT),1,2-dichloroethane(DCA)and 1,1,1-trichloroethane(TCA),the removal effects of Fe(Ⅱ)catalyzed nano calcium peroxide(nCaO2)system and the citric acid(CA)or iron sulfide(FeS)enhanced system on single and complex chlorinated hydrocarbons were investigated and compared.The experimental results indicated that:Some inhibition and promotion effects are found among each contaminant during the degradation of mixed chlorinated hydrocarbons;The addition of CA or FeS can promote the degradation of chlorinated olefins(TCE and PCE),and FeS performed better than CA;For the actual chlorinated hydrocarbon contaminated groundwater with higher concentration of chlorinated olefins(TCE and PCE)and lower concentration of chlorinated alkanes(CF,CT,DCA and TCA),the nCaO2-Fe(Ⅱ),nCaO2-Fe(Ⅱ)-CA and nCaO2-Fe(Ⅱ)-FeS systems can be applied flexibly for remediation.

关 键 词：氯代烃 纳米过氧化钙 柠檬酸 硫化亚铁 

分 类 号：X523[环境科学与工程—环境工程]