化工进展2012，Vol.31Issue(9)：2093-2096,2101,5.
零价铁活化过硫酸钠降解甲基橙
Sodium peroxydisulfate activated by zero-valent iron for degradation of methyl orange
摘要
Abstract
Oxidative degradation of methyl orange（MO） in aqueous solution by zero-valent iron-activated sodium peroxydisulfate（PDS） was investigated.The degradation process was based on generation of sulfate radicalsas powerful oxidizing species.The effects of dosages of PDS and Fe0,initial pH,temperature and initial concentration of MO on MO degradation were examined in batch experiments.The results demonstrated that MO could be degraded by Fe0/PDS reagent effectively.Under the condition with initial MO concentration 100 mg.L-1,PDS dosage 0.912 mmol.L-1,Fe0 dosage 0.16 g.L-1,pH 4.0,temperature 298 K,MO degradation in aqueous solution reached 80.2% within 2.5 h.At the same time,the kinetics of Fe0/PDS system oxidation of MO was investigated,and the results demonstrated that degradation of MO occurred in two stages,and the second stage of the reaction followed first-order kinetics behavior.关键词
过硫酸盐/零价铁/甲基橙/非均相催化/动力学Key words
persulfate/Fe0/methyl orange/heterogeneous catalysis/kinetic分类
资源环境引用本文复制引用
杨梅梅,周少奇,郑永鑫,郑可..零价铁活化过硫酸钠降解甲基橙[J].化工进展,2012,31(9):2093-2096,2101,5.基金项目
广州市重大科技项目 （）
城市生活垃圾焚烧发电技术及装备产业化项目 （）
