Rapid treatment of atrazine-contaminated water by nickel/iron bimetallic system  

作　　者：WEIHong TONGShao-ping WANGHong-yu LIUWei-ping 

机构地区：[1]InstituteofEnvironmentalScience,ZhejiangUniversity,Hangzhou310029,China. [2]DepartmentofAppliedChemistry,ZhejiangUniversityofTechnology,Hangzhou310032,China [3]CollegeofCivilEngineeringandArchitecture,ZhejiangUniversityofTechnology,Hangzhou310032,China

出　　处：《Journal of Environmental Sciences》2004年第6期925-927,共3页环境科学学报（英文版）

基　　金：TheNationalNaturalScienceFoundationofChina(No .30 2 70 767)

摘　　要：The utility of nickel/iron in the remediation of atrazine-contaminated water was investigated. The experimental results showed that nickel/iron had effective catalytic activity in dechlorinating atrazine under acidic conditions. The dechlorination reaction approximately followed the first-order kinetics under the experimental conditions(nickel/iron:1.0 g/250 ml;C atrazine=20.0 mg/L), the reaction rate increased with decreasing pH value of the reaction solution and increasing the proportion of Ni:Fe within 2.95%. For condition with 2.95% nickel/iron, the reaction rate constants were 0.07518(R=0.9927), 0.06212(R=0.9846) and 0.00131 min -1(R=0.9565) at pH=2.0, 3.0 and 4.0, respectively. HPLC analysis was used to monitor the decline of atrazine concentration.The utility of nickel/iron in the remediation of atrazine-contaminated water was investigated. The experimental results showed that nickel/iron had effective catalytic activity in dechlorinating atrazine under acidic conditions. The dechlorination reaction approximately followed the first-order kinetics under the experimental conditions(nickel/iron:1.0 g/250 ml;C atrazine=20.0 mg/L), the reaction rate increased with decreasing pH value of the reaction solution and increasing the proportion of Ni:Fe within 2.95%. For condition with 2.95% nickel/iron, the reaction rate constants were 0.07518(R=0.9927), 0.06212(R=0.9846) and 0.00131 min -1(R=0.9565) at pH=2.0, 3.0 and 4.0, respectively. HPLC analysis was used to monitor the decline of atrazine concentration.

关 键 词：ATRAZINE nickel/iron bimetallic system dechlorination reaction first-order kinetics 

分 类 号：X786.03[环境科学与工程—环境工程] X592