Reduction Removal of Cr(Ⅵ)from Wastewater by COf Deriving from Formate Anion Based on Activated Carbon Catalyzed Persulfate  

作　　者：ZHOU Rui LI Tingting ZHANG Lijian JIAO Xinqian 

机构地区：[1]Key Laboratory of Groundwater Resources and Environment,Ministry of Education,Jilin Provincial Key Laboratory of Water Resource and Environment,College of New Energy and Environment,Jilin University,Changchun 130021,P.R.China

出　　处：《Chemical Research in Chinese Universities》2020年第5期870-876,共7页高等学校化学研究（英文版）

基　　金：Supported by the National Nature Science Foundation of China(No.41302184);the Project of the Research on Water Environmental Protection Strategy and Management Policy in Beijing-Tianjin-Hebei Region,China(No.2018ZX07111001);the Scientific Frontier and Interdisciplinary Research Project of Jilin University;the Outstanding Youth Cultivation Plan of Jilin University,the Fund of the Key Laboratory of Groundwater Resources and Environmental of Ministry of Education(Jilin University) China;the Project of the National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Teclmology of China.

摘　　要：As a strong reducing radical,carbon dioxide anion radical(CO·-2)can be generated by initiating sulfate radical(SO·-4)in the presence of tonnate anions(FA)for Cr(Ⅵ)reduction.Moreover,activated carbon(AC)-catalyzed persultate(PS)oxidation is an economically justifiable,enⅥronmentally friendly,and easy-to-scalemethod to produce SO·-4 The complete removal of Cr(Ⅵ)was achieved within 280 min for an initial Cr(Ⅵ)concentration of 50 mg/L under the optional condition of c(AC)=1 g/L,[PS]0=1O mmol/L,[FA]0=10 mmol/L,T=30℃,and unadjusted pH.When the molar ratio of FA to PS was greater than or equal to 1,the system maintained a strong reduction state.The mechanism investigation confirmed that FA was converted to carboxyl anion radical(CO2·-2)as the predominant radical tor Cr(Ⅵ)reduction.This novel system may offer a potential plattbnn teclmology tor Cr(Ⅵ)wastewater treatment.

关 键 词：Cr(Ⅵ) Activated carbon Carboxyl anion radical Persulfate:Reduction 

分 类 号：O62[理学—有机化学]