环境工程学报2025，Vol.19Issue(9)：2257-2269,13.DOI:10.12030/j.cjee.202410057
球磨硫化微米零价铁对1,1,2,2-四氯乙烷的降解及其影响因素
Degradation of 1,1,2,2-tetrachloroethane by ball-milled sulfidated microscale zero-valent iron and its influencing factors
摘要
Abstract
Sulfidated microscale zero-valent iron(S-mZVI)was prepared under aerobic conditions by ball milling method,which was used for degradation of 1,1,2,2-tetrachloroethane(TeCA),and the influencing factors,including preparation conditions,S-mZVI dosage,initial TeCA concentration,pH and common anions in groundwater(HCO3-,Cl-,SO42-and NO3-)were investigated.The results showed that TeCA was firstly degraded into trichloroethylene(TCE)by non-reductive dehydrochlorination at an initial concentration below 20 mg·L-1,while a reductive β-elimination reaction from TeCA to dichloroethylene(DCE)was observed as the initial concentration increased.The degradation rates of TeCA and TCE at low concentrations were not significantly affected by the variation in pH and HCO3-levels under topical groundwater conditions.However they were accelerated by SO42-and NO3-,and inhibited by Cl-.The S-mZVI would be substantially consumed by NO3-resulting in a reduction of TCE degradation.The above results are expected to support the full-scale production and practical application of ball-milled S-mZVI.关键词
硫化微米零价铁/1,1,2,2-四氯乙烷/球磨/地下水/氯代烃Key words
sulfided microscale zero-valent iron/1,1,2,2-tetrachloroethane/ball milling/groundwater/chlorinated hydrocarbons分类
资源环境引用本文复制引用
刘隆超,杨进,王岽..球磨硫化微米零价铁对1,1,2,2-四氯乙烷的降解及其影响因素[J].环境工程学报,2025,19(9):2257-2269,13.基金项目
中国石油化工股份有限公司科技开发资助项目(324102) （324102）
