| 盐助溶液燃烧法制备MnFe2O4催化过一硫酸盐降解双酚A |
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| 引用本文： | 岳敏,王璟,韩玉泽,张萍.盐助溶液燃烧法制备MnFe2O4催化过一硫酸盐降解双酚A[J].化工学报,2020,71(12):5589-5598. |
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| 作者姓名： | 岳敏 王璟 韩玉泽 张萍 |
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| 作者单位： | 1.山东省水环境污染控制与资源化重点实验室，山东大学环境科学与工程学院，山东 青岛 266237;2.《山东大学学报（哲社版）》编辑部，山东 济南 250100;3.山东城市建设职业学院，山东 济南 250103 |
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| 摘 要： | 采用盐助溶液燃烧法制备磁性铁酸锰（MnFe2O4），催化过一硫酸氢盐（PMS）氧化降解水溶液中的双酚A。通过XRD、BET等手段对制备的铁酸锰催化剂进行了表征。探究了MnFe2O4投加量、PMS投加量、溶液初始pH、淬灭剂、共存离子等因素对双酚A降解效果的影响，评估了MnFe2O4催化剂的循环利用性能。结果表明，MnFe2O4和PMS的最合理投加量分别为 0.3 g/L、0.3 mmol/L，初始pH为11.0时双酚A降解效果最好，60 min内的降解率可达99.3%。淬灭实验表明，催化体系中同时存在多种活性物质，1O2是主要活性物种。溶液中Cl-、HCO3-和HPO42-等共存离子的存在影响双酚A的降解。双酚A在60 min内的TOC去除率为34.9%，苯环断裂和开环反应是其主要降解路径。MnFe2O4催化剂循环使用三次后，双酚A的降解率仍保持在90.0%左右。
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| 关 键 词： | 双酚A MnFe2O4 盐助溶液燃烧法 硫酸根自由基 催化 降解 制备 |
| 收稿时间： | 2020-05-06 |
Degradation of bisphenol A by peroxymonosulfate activated by MnFe2O4 prepared by salt-assisted solution combustion synthesis |
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| YUE Min,WANG Jing,HAN Yuze,ZHANG Ping.Degradation of bisphenol A by peroxymonosulfate activated by MnFe2O4 prepared by salt-assisted solution combustion synthesis[J].Journal of Chemical Industry and Engineering(China),2020,71(12):5589-5598. |
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| Authors: | YUE Min WANG Jing HAN Yuze ZHANG Ping |
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| Affiliation: | 1.Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, Shandong, China;2.Editorial Department of Journal of Shandong University(Philosophy and Social Sciences), Jinan 250100, Shandong, China;3.Shandong Urban Construction Vocational College, Jinan 250103, Shandong, China |
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| Abstract: | Magnetic manganese ferrite (MnFe2O4) prepared by the salt-assisted solution combustion synthesis was used to activate peroxymonosulfate(PMS) to oxidize bisphenol A in aqueous solution. The prepared MnFe2O4 catalyst was characterized by XRD and BET. The effects of MnFe2O4 dosage, PMS dosage, initial pH of the solution, quencher, and co-existing ions on the degradation of bisphenol A were investigated. The reusability of the MnFe2O4 catalyst was evaluated through cycling experiments. The results showed that the best dosages of MnFe2O4 and PMS were 0.3 g/L and 0.3 mmol/L, respectively. When the initial pH was 11.0, the degradation rate of bisphenol A was 99.3% in 60 min. When putting some quenchers into the MnFe2O4/PMS catalytic system, all of them showed depression effects on degradation of bisphenol A, and the 1O2 was the main active species. The co-existing ions such as Cl-, HCO3-, and HPO42- in solution affected the degradation of bisphenol A. The TOC removal rate of bisphenol A within 60 min was 34.9%, the rupture and opening of benzene ring are the main reaction pathways. After the MnFe2O4 catalyst was recycled three times, the degradation rate of bisphenol A remained at about 90.0%. |
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| Keywords: | bisphenol A MnFe2O4 salt-assisted solution combustion synthesis sulfate radical catalysis degradation preparation |
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