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现代化工  2018, Vol. 38 Issue (11): 92-96,98    DOI: 10.16606/j.cnki.issn0253-4320.2018.11.020
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
Fe2+活化过硫酸盐对亚甲基蓝废水的降解研究
刘小佳1, 张晓威1, 武壮壮1, 王晓慧1, 海热提1, 李静2
1. 北京化工大学环境科学与工程系, 北京 100029;
2. 河北圣泓环保科技有限责任公司, 河北 承德 067000
Research on degradation of methylene blue-containing wastewater by Fe2+ activated persulfate
LIU Xiao-jia1, ZHANG Xiao-wei1, WU Zhuang-zhuang1, WANG Xiao-hui1, HAI Re-ti1, LI Jing2
1. Department of Environment Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China;
2. Hebei Shenghong Environmental Protection Technology Co., Ltd., Chengde 067000, China
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摘要 研究了Fe2+活化过硫酸钠(SPS)在降解亚甲基蓝(MB)过程中溶液初始pH、Fe2+浓度、SPS浓度、Fe2+/SPS的最佳浓度比、MB的初始质量浓度对溶液中MB及COD降解效果的影响。结果表明,酸性环境MB的降解率要高于碱性环境,且溶液初始pH为3时MB的去除效果最佳。过高或过低的Fe2+浓度及SPS浓度对MB脱色效果都会产生一定的影响,且最佳投加比为C(Fe2+)∶C(S2O82-)=1∶2。当MB初始质量浓度为50 mg/L时,SPS与Fe2+的最佳投加浓度分别为0.4 mmol/L及0.2 mmol/L。Fe2+/SPS体系对于MB的脱色效果可达到80%~90%,对于氧化的中间产物的矿化度为20%~40%。当溶液初始温度<20℃时会使MB发生分子聚焦现象,随着溶液初始温度的升高,MB的脱色率随之升高,MB分子脱色的最佳反应温度为40℃。通过液相色谱质谱联用(LC-MS)分析可知,MB的氧化中间产物主要为二氨基苯酚、邻氨基苯酚、苯并噻唑、苯酚等苯的同系物。
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刘小佳
张晓威
武壮壮
王晓慧
海热提
李静
关键词:  亚甲基蓝  Fe2+活化  过硫酸钠  氧化中间产物    
Abstract: In this study,Fe2+ activated sodium persulfate (SPS) is used in the degradation of methylene blue (MB).Influences of the initial solution pH,Fe2+ concentration,SPS concentration,Fe2+/SPS ratio and initial MB concentration on the degradation of MB and COD in the solution are studied.Results show that the degradation rate of MB in the acidic condition is higher than that in the alkaline condition.The removal efficiency of MB achieves the best at pH=3.Too high or too low concentrations of Fe2+ and/or SPS will have certain impact on the degradation of MB and the optimal dosing ratio is C(Fe2+):C(S2O32-)=1:2.The optimal dosing concentrations of SPS and Fe2+ are 0.4 mmol·L-1 and 0.2 mmol·L-1 respectively when the initial MB concentration is 50 mg·L-1.MB decoloration by Fe2+/SPS system can reach 80%-90%.The intermediates in oxidation can get a salinity of 20% to 40% through Fe2+/SPS system.When the temperature of the solution is below 20℃,there appears molecular focus phenomenon in MB solution.With the increase of initial temperature in the solution,the de-coloring rate of MB will increase.The optimum reaction temperature for decoloration of MB molecules is 40℃.Analysis by means of liquid chromatography-mass spectrometry (LC-MS),the oxidative intermediates of MB mainly include diamino phenol,2-aminophenol,benzothiazole,phenol and other benzene homologues.
Key words:  methylene blue    activation by Fe2+    sodium persulfate    intermediate products from oxidation
收稿日期:  2018-03-01      修回日期:  2018-09-05          
X703  
基金资助: 国家重点研发计划项目(2016YFC0401105);北京市科技计划项目(Z171100002217029);中央高校基本科研业务费(JD1704)
通讯作者:  海热提(1959-),男,博士,教授,主要从事污水净化新型材料技术及装备等研究,通讯联系人,hairt@mail.buct.edu.cn。    E-mail:  hairt@mail.buct.edu.cn
作者简介:  刘小佳(1992-),男,硕士研究生,研究方向为水处理,337118948@qq.com
引用本文:    
刘小佳, 张晓威, 武壮壮, 王晓慧, 海热提, 李静. Fe2+活化过硫酸盐对亚甲基蓝废水的降解研究[J]. 现代化工, 2018, 38(11): 92-96,98.
LIU Xiao-jia, ZHANG Xiao-wei, WU Zhuang-zhuang, WANG Xiao-hui, HAI Re-ti, LI Jing. Research on degradation of methylene blue-containing wastewater by Fe2+ activated persulfate. Modern Chemical Industry, 2018, 38(11): 92-96,98.
链接本文:  
http://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2018.11.020  或          http://www.xdhg.com.cn/CN/Y2018/V38/I11/92
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