次氯酸钠氧化二价铁反应条件的探讨及其机理研究  

Investigation into the Reaction Conditions and Mechanistic Study of the Oxidation of Ferrous Iron by Sodium Hypochlorite

作　　者：李聃 徐海波 王海燕 窦培举 张明 廖传华[2] Li Dan;Xu Haibo;Wang Haiyan;Dou Peiju;Zhang Ming;Liao Chuanhua(CNOOC Research Institute,Beijing,100027;College of Mechanical and Power Engineering,Nanjing Tech University,Jiangsu,211816)

机构地区：[1]中海石油(中国)有限公司北京研究中心,北京100027 [2]南京工业大学机械与动力工程学院,江苏211816

出　　处：《当代化工研究》2024年第19期45-47,共3页Modern Chemical Research

摘　　要：本研究采用次氯酸钠对水中的二价铁进行氧化,从反应温度、反应时间、含盐环境及二价铁与次氯酸钠质量比等因素探讨了次氯酸钠氧化最佳条件,并采用二氮杂菲光度法研究了次氯酸钠(NaClO)氧化二价铁离子的反应动力学。研究表明,次氯酸钠氧化二价铁的最佳条件为85℃下,m(Fe^(2+)):m(NaClO)=1:1.2,反应5 min后,总铁去除率达到了99.6%;在反应温度85℃下,溶液pH值为4.61时,确定了NaClO氧化Fe^(2+)的反应速率常数k值为0.1 min^(-1),反应动力学方程为■。Sodium hypochlorite was used to oxidize Iron(Ⅱ)in water.The optimal conditions for the oxidation of sodium hypochlorite were explored from factors such as reaction temperature,reaction time,saline environment,and the mass ratio of Iron(II)to sodium hypochlorite.And the reaction kinetics of sodium hypochlorite(NaClO)oxidation of Iron(II)were studied using phenanthroline spectrophotometry.Research has shown that the optimal conditions for sodium hypochlorite to oxidize Iron(II)were at 85℃and m(Fe^(2+)):m(NaClO)=1:1.2,the total iron removal rate reached 99.6%after 5 minutes of reaction.At a reaction temperature of 85℃and a solution pH of 4.61,the reaction rate constant k value for NaClO oxidation of Fe^(2+)was determined to be 0.1 min^(-1),and the reaction kinetics equation was■.

关 键 词：次氯酸钠 二价铁 氧化 机理 

分 类 号：X703[环境科学与工程—环境工程]