染料芬顿氧化脱色参数计算的新方法研究  

New Method for Parameters Estimation in Dye Oxidation by Fenton's Feagent

作　　者：贾兴涛[1] 刘金芝[1] 王慧[1] 康琪[1] 

机构地区：[1]山东师范大学化学化工与材料科学学院,山东济南250014

出　　处：《常熟理工学院学报》2009年第8期54-57,共4页Journal of Changshu Institute of Technology

基　　金：山东省自然科学基金(No.Y2007B03)资助项目

摘　　要：以活性紫为模型染料,讨论了芬顿氧化脱色过程中散射和染料中间体对反应速率常数和脱色率的影响,提出了一种新的参数计算方法.结果表明,脱色体系的残留色度是由游离染料、两种中间体及散射四部分组成.若采用传统的测定反应速率常数和脱色率的方法,散射及中间产物的存在将导致较大的系统误差.采用多元线性回归分析法,从总残留色度中区分出散射及中间产物所占比例后,所得脱色率和反应速率常数更为合理.The work reports a new method for parameters estimation in dye oxidation by Fenton＇s reagent. The decolonization of Reactive violet is used as the model. The influence of light scattering of particles and color intermediates on rate constant and color removal estimations is reported. The experimental results indicated that free dye, two color intermediates and the light scattering from the floc particles were the four origins of the residual color in the reaction mixture. The presence of the light scattering and color intermediates resulted in great errors in the estimations of color removal efficiency and rate constant in the commonly used method. After correcting the influence of light scattering and color intermediates by using a multiple linear regression method, a reasonable parameter estimation in the oxidation kinetics and efficiency was obtained.

关 键 词：芬顿试剂 脱色率 动力学 染料 

分 类 号：X703.1[环境科学与工程—环境工程]