The study on electrocatalytic degradation performance of collaborative system of Mn2+ and PDS on Acid Blue 80
LI Dong-mei1, LIU Jun-yang1, XU Ge2, FENG Li1, LIN Xian-zeng3, LI Shao-xiu1, YU Zi-zhen4
1. Faculty of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China;
2. International Department, Affiliated High School of South China Normal University, Guangzhou 510630, China;
3. Foshan Water Group, Foshan 528500, China;
4. Guangzhou Alcanta International College, Guangzhou 511458, China
The present study was envisaged to study the electrocatalytic degradation of Acid Blue 80(AB80) using an electrocatalytic collaborative system (E-Mn2+-PDS). The degradation efficiencies of different catalytic systems were compared, and the effect of factors such as Mn2+ concentration, PDS concentration, pH value and current density on the degradation efficiency of E-Mn2+-PDS collaborative system was explored. In addition, the oxidizing substances, decomposition products of AB80 and its degree of mineralization in the system were investigated, and the mechanism of degradation was elucidated. It was found that the degradation rate of E-Mn2+-PDS collaborative system on AB80 reached 99.9% in 45 min. pH was found to significantly affect the E-Mn2+-PDS collaborative system. When pH=3, the degradation rate of E-Mn2+-PDS reached 99.6%. The oxidizing substances in the E-Mn2+-PDS system included SO4-×, HO×, and active Mn3+. In the E-Mn2+-PDS collaborative system, AB80 underwent a series of reactions, which produced 11major decomposition products. Additionally, the mineralization rate of E-Mn2+-PDS system was 2.6 times that of the direct electrocatalysis in 6 hours. The degradation mechanism was found to be the production of SO4-×by Mn2+ and the current from PDS, which subsequently reacted with water to generate HO×,this HO×oxidized the Mn2+ to oxidizedactive Mn3+ in the current, and the three different oxidizing species degraded the pollutants together.
李冬梅, 刘君扬, 徐歌, 冯力, 林显增, 李绍秀, 喻子真. Mn2+协同PDS对酸性蓝80的电催化降解性能研究[J]. 中国环境科学, 2020, 40(6): 2464-2472.
LI Dong-mei, LIU Jun-yang, XU Ge, FENG Li, LIN Xian-zeng, LI Shao-xiu, YU Zi-zhen. The study on electrocatalytic degradation performance of collaborative system of Mn2+ and PDS on Acid Blue 80. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(6): 2464-2472.
Xie X H, Liu N, Jiang H, et al.Construction and Application of Engineered Bacteria for Bioaugmentation Decolorization of Dyeing Wastewater: A Review [C]//International Conference on Environmental Pollution & Public Health, 2014.
[2]
田玉萍.Fenton预处理—序批式生物膜反应器处理模拟染料生产废水研究[D].成都:四川大学, 2006. Tian Yu-ping.Treatment of Simulated Dye Wastewater by Fenton-Sequencing Batch Biofilm ReactorProcess [D].Chengdu: Sichuan University, 2006.
[3]
Chung K T.Azo Dyes and Human Health: A Review [J].Journal of Environmental Science and Health Part C, 2016,34(1-4):233-261.
[4]
Chung K T.Review of the mutagenicity, carcinogenicity and autoimmunity of azo dyes and their metabolites from the perspective of their structure-activity relationships [J].Journal of Labour Medicine, 2004.
[5]
刘露,张汪群.蒽醌类染料废水处理技术研究进展[J].四川化工, 2019,22(2):22-25. Liu Lu, Zhang Wangqun.Research progressonthe treatment technology of anthraquinone dye wastewater [J].Sichuan chemical industry, 2019,22(2):22-25.
[6]
Olmez-Hanci T, Arslan-Alaton I.Comparison of sulfate and hydroxyl radical based advanced oxidation of phenol [J].Chemical Engineering Journal, 2013,224(Complete):10-16.
[7]
Liu Z, Zhao C, Wang P, et al.Removal of carbamazepine in water by Electro-activated carbon fiber-peroxydisulfate: Comparison, optimization, recycle, and mechanism study [J].Chemical Engineering Journal, 2018.
[8]
司斌.常规pH下Co(Ⅲ)介体电化学氧化体系去除水中难降解有机污染物的研究[D].重庆:重庆大学, 2018. Si Bin.Removal of refractory organic contaminants by Cobalt (Ⅲ) mediated electrochemical oxidation process under usual pH Value [D].Chongqing: Chongqing University, 2018.
[9]
Balaji S, Kokovkin V V, Chung S J, et al.Destruction of EDTA by mediated electrochemical oxidation process: Monitoring by continuous CO2 measurements [J].Water Research, 2007,41(7):0-1432.
[10]
Kulshrestha P, Giese, R F, Aga D S.Investigating the Molecular interactions of oxytetracycline in clay and organic matter:?Insights on factors affecting its mobility in soil [J].Environmental Science & Technology, 2004,38(15):4097-4105.
[11]
Sono-activated persulfate oxidation of bisphenol A: Kinetics, pathways and the controversial role of temperature [J].Chemical Engineering Journal, 2015,280:623-633.
[12]
杨世迎,王萍,单良,等.碳酸盐活化过一硫酸盐技术降解水中有机污染物[C].哈尔滨:全国水处理化学大会暨海峡两岸水处理化学研讨会.2010. Yang Shiying, Wang Ping, Shan Liang, et al.Degradation of organic pollutants in water by carbonate activated persulfate Technology [C]//Harbin: National water treatment Chemistry Conference and cross strait water treatment chemistry Seminar, 2010.
[13]
Wells C F, Davies G.Hydrolysis of the Manganic Ion [J].Nature, 1965,205(4972):692-693.
[14]
饶丹丹,孙波,乔俊莲,等.三价锰的性质、产生及环境意义[J].化学进展, 2017,29(9):1142-1153. Dandan Rao, Bo Sun, Junlian Qiao, at al.The properties, generation and environmental significance of Mn(Ⅲ) [J].Progress in Chemistry, 2017,29(9):1142-1153.
[15]
Wang S, Zhou N.Removal of carbamazepine from aqueous solution using sono-activated persulfate process [J].Ultrasonics Sonochemistry, 2016,29:156-162.
[16]
Song H, Yan L, Ma J, et al.Nonradical oxidation from electrochemical activation of peroxydisulfate at Ti/Pt anode: Efficiency, mechanism and influencing factors [J].Water Research, 2017,116:182-193.
[17]
Benjamin, Blair, Adam, et al.Evaluating the degradation, sorption, and negative mass balances of pharmaceuticals and personal care products during wastewater treatment [J].Chemosphere, 2015,134:395-401.
[18]
Hussain S, Gul S, Steter J R, et al.Route of electrochemical oxidation of the antibiotic sulfamethoxazole on a mixed oxide anode [J].Environmental Science and Pollution Research, 2015,22(19):15004-15015.
[19]
Wang J, Wang S.Activation of persulfate (PS) and peroxymonosulfate (PMS) and application for the degradation of emerging contaminants [J].Chemical Engineering Journal, 2018,334:1502-1517.
[20]
Lin H, Wu J, Zhang H.Degradation of clofibric acid in aqueous solution by an EC/Fe3+/PMS process [J].Chemical Engineering Journal, 2014,244:514-521.
[21]
Nico P S, Zasoski R J.Mn(III) center availability as a rate controlling factor in the oxidation of phenol and sulfide on δ-MnO2 [J].Environmental Science and Technology, 2001,35(16):3338-3343.
[22]
Sun B, Guan X, Fang J, et al.Activation of manganese oxidants with bisulfite for enhanced oxidation of organic contaminants: The involvement of Mn(III) [J].Environmental Science & Technology, 2015,49(20):12414-12421.
