类Fenton法的Fe^0/Na2S2O8体系对甲基橙降解研究  

Degradation of Methyl Orange by Fe^0/Na2S2O8 Fenton-like System

作　　者：吴芳芳 郭绍英 黄辉煌 WU Fang-fang;GUO Shao-ying;HUANG Hui-huang(College of Ecological and Resource Engineering,Fujian Provincial Key Laboratory of Eco-Industrial Green Technology,Wuyi University,Wuyishan 354300,China;Xiang'an Municipal Group Environmental Engineering Co.,LTD,Xiamen 361100,China)

机构地区：[1]武夷学院生态与资源工程学院,福建省生态产业绿色技术重点实验室,福建武夷山354300 [2]翔安市政集团环境工程有限公司,福建厦门361100

出　　处：《宜春学院学报》2020年第9期4-7,84,共5页Journal of Yichun University

基　　金：国家自然科学基金项目(51406141);福建省自然科学基金项目(2018J05092);福建省高校产学研合作项目(2018Y4011);福建省中青年教师教育科研项目(JAT170596,JAT190773);南平市科技计划项目(N2017DN06);武夷学院基金(XQ1210,XD201703);武夷学院教改项目(JG202006)。

摘　　要：本文基于Fe^0/Na2S2O8类Fenton体系,探索各因素(pH,PDS投加量,Fe投加量,反应温度及甲基橙浓度)对甲基橙(MO)的降解效果。实验结果表明:在pH=4,MO初始反应溶度为100 mg/L时,PDS投加量为0.912 mmol/L,Fe^0投加量为0.16 g/L时,体系反应150min后的降解率为81.9%,表观反应速率常数k为0.067 min-1。Fe^0活化过硫酸盐体系对MO溶液的降解符合一级反应动力学规律,动力学方程为:K=0.0894exp(-4838/RT)[Co]0.2004[PDS]0.0876[Fe^0]0.712,且反应条件对降解率影响顺序分别为PDS投加量<MO初始浓度<Fe^0投加量。This study has discussed the effect of operated conditions(pH,the amount of PDS and Fe,temperature and the concentration of MO)on Methyl Orange(MO)degradation under Fe^0/Na2S2O8(PDS)Fenton-like system.The result indicate that the decolorization efficiency of MO was 81.9%and the apparent rate constant of reaction,k,was 0.067 min-1 when the pH was 4,the initial condition of MO was 100 mg/L,the amount of PDS and Fe^0 was 0.912mmol/L and 0.16g/L,respective.The reaction model g(α)of MO degradation was satisfied with first order chemical reaction K=0.0894exp(-4838/RT)[Co]0.2004[PDS]0.0876[Fe^0]0.712.In addition,the degradation efficiency of MO follow this order:the amount of PDS<MO concentration<the amount of PDS Fe^0.

关 键 词：Fe0/Na2S2O8 甲基橙溶液 降解 类Fenton法 

分 类 号：X506[环境科学与工程—环境工程]