微波/过氧化氢降解水中甲基红  

Degradation of Methyl Red in Water by Microwave Radiation and Hydrogen Peroxide

作　　者：戴竹青[1] 王密华[1] 贾韧刃[2] 周盼[1] 

机构地区：[1]常州大学环境与安全工程学院,江苏常州213164 [2]中国石油天然气股份有限公司抚顺石化分公司,辽宁抚顺113001

出　　处：《石油化工高等学校学报》2014年第6期11-15,共5页Journal of Petrochemical Universities

基　　金：江苏省科技攻关项目"印染废水提标与回用技术开发"(BY2012100)

摘　　要：研究了微波/过氧化氢协同作用下水中甲基红的降解。考察了甲基红初始质量浓度、pH、H2O2加入量、反应时间、温度等因素对降解率和降解量的影响,并建立了甲基红降解的数学模型。结果表明,碱性条件下、反应时间延长有利于甲基红的降解,甲基红初始质量浓度越大,则氧化苛刻度Z值越大,甲基红降解反应动力学为一级反应,反应速率常数为0.172 4min-1,降解量的活化能126.6kJ/mol。在H2O2加入体积分数为1.6%、甲基红初始质量浓度为130mg/L、反应温度473K、反应时间为12min、pH=10的条件下,甲基红的降解率可达到78%。The synergy effect of microwave/peroxide degradation to the methyl red in water was investigated.The initial concentration of substate,pH,the amount of hydrogen peroxide,reaction time,and temperature were examined respectively, and a mathematical model was established in order to study the degradation of methyl red.The results showed that the degradation was enhanced under alkaline conditions and a longer reaction time.If low residual concentration was demanded with high initial concentration,a high value Z ,the oxidation severity was required.The degradation of methyl red is a first order reaction,of which the reaction rate constant is 0.1 72 4 min^-1 and the activation energy is 126.6 kJ/mol.The degradation rate can be as high as 78% in following conditions：initial mass concentration 130 mg/L,volume fraction of hydrogen peroxide 1.6%,reaction at 473 K for 12 min,pH=10.

关 键 词：甲基红 微波 过氧化氢 降解 

分 类 号：TE991[石油与天然气工程—石油机械设备] X52[环境科学与工程—环境工程]