过二硫酸钠活化技术的研究  

Study on activation technology of sodium peroxydisulfate

作　　者：王奎涛[1] 邵永[1] 肖蕾[1] 吴云霞[1] 王昆亭 张钊[1] 王建勋[1] 

机构地区：[1]河北科技大学化学与制药工程学院,河北省药用分子化学重点实验室,河北省药物化工工程技术研究中心,河北石家庄050018

出　　处：《现代化工》2016年第12期86-89,91,共5页Modern Chemical Industry

摘　　要：通过同时加入Fe(Ⅱ)与Cu(Ⅱ)复合活化过硫酸钠,以亚甲基蓝为氧化降解目标,分别考察Na_2S_2O_8的浓度、初始pH、Fe^(2+)和Cu^(2+)浓度、反应时间4个因素对降解效果的影响。以亚甲基蓝的降解率、处理成本等为考察目标,试验表明,在Na_2S_2O_8的浓度为84.0 mmol/L,初始p H为2.5,Fe^(2+)、Cu^(2+)浓度分别为1.0、0.4 mmol/L,反应时间为30 min的条件下,降解率达93%。分子探针竞争实验表明体系中产生了硫酸根自由基。With methylene blue as the oxidative degradation compound,the effects of the concentration of Na2S2O8,the initial p H,the concentration of Fe^2＋,the concentration of Cu^2＋ and the reaction time on the degradation efficiency are investigated by the simultaneous addition of Fe（ Ⅱ） and Cu（ Ⅱ） to activate sodium peroxydisulfate. Taking the degradation rate of methylene blue and treatment cost as the target,the optimal degradation conditions are shown as follows： 84. 0 mmol / L of Na2S2O8,2. 5 of initial pH,1. 0 mmol/L and 0. 4 mmol/L of the concentrations of Fe^2＋ and Cu^2＋ concentration,respectively,30 minutes of reaction time. Under the optimal condition,the degradation rate of methylene blue can reach 93%. The molecular probe competition experiments showed that the system produced sulfate radicals.

关 键 词：过二硫酸盐 Fe(Ⅱ) Cu(Ⅱ) 亚甲基蓝 氧化降解 

分 类 号：TQ09[化学工程]