活性炭负载钴活化过硫酸钠降解甲基橙的研究  

The Degradation of Methyl Orange by Sodium Persulfate with Co-loaded Activated Carbon as Catalyst

作　　者：徐清艳[1] Xu Qing-yan(Chemistry and Chemical Engineering Department of MinJiang University, Fuzhou Fujian 350108)

机构地区：[1]闽江学院化学与化学工程系,福建福州350108

出　　处：《化学工程与装备》2016年第11期11-15,共5页Chemical Engineering & Equipment

基　　金：福建省教育厅项目(JA15435)

摘　　要：采用活性炭负载钴活化过硫酸钠的方式产生具有强氧化性的硫酸根自由基,以甲基橙为目标污染物,考察了硫酸根自由基对甲基橙的氧化降解行为。考察了钴负载量、过硫酸钠用量、催化剂用量、催化剂煅烧温度、甲基橙浓度、pH值、反应时间、催化剂使用次数、不同无机离子等因素对降解甲基橙的影响。实验结果表明:在活性炭负载钴负载量为6%、过硫酸钠用量为4 g/L、催化剂用量为0.75 g/L、煅烧温度400℃、甲基橙浓度为10 mg/L、pH为3、反应时间45min时甲基橙的脱色率最高可达98.0%。另外不同的无机离子对甲基橙的降解都会有一定的抑制作用。Using sodium persulfate activated by co-loaded activated carbon and taking methyl orange as the target, oxidative degradation of methyl orange in aqueous solution was investigated. The effect of loaded cobalt capacity, the dosage of sodium persulfate dosage, the dosage of catalyst, the calcination temperature of the catalyst, the concentration of methyl orange, p H value, reaction time, using frequency of the catalys, the influence of different inorganic ions on the degradation of methyl orange was focused. The experimental results showed that under the condition that the loaded cobalt capacity was 6%, the dosage of sodium persulfate was 4 g/L, catalyst dosage was 0.75 g/L, calcination temperature was 400℃, the concentration of methyl orange was 10 mg/L, the pH value was 3, the reaction time was 45 minutes, the decoloring rate of methyl orange could reach 98.2%. The different inorganic ions would have certain inhibition on the degradation of methyl orange.

关 键 词：活性炭 过硫酸钠 降解 甲基橙 

分 类 号：X788[环境科学与工程—环境工程] X791