Sulfamethazine degradation by sulfite through GAC@Ni/Fe Three-Dimensional (3D) particle electrode activation: Contribution of active substance and synergy

被引:17
作者
Li, Siwen [1 ,2 ]
Yu, Hongbin [1 ,2 ]
Lin, Yingzi [3 ,4 ]
Zhu, Suiyi [1 ,5 ]
Liu, Gen [1 ]
Shi, Chunyan [6 ]
机构
[1] Northeast Normal Univ, Sch Environm, Changchun 130117, Peoples R China
[2] Northeast Normal Univ, Sch Environm, Engn Lab Water Pollut Control & Resources Recovery, Changchun 130117, Peoples R China
[3] Jilin Jianzhu Univ, Sch Municipal & Environm Engn, Changchun 130118, Peoples R China
[4] Jilin Jianzhu Univ, Key Lab Songliao Aquat Environm, Minist Educ, Changchun 130118, Peoples R China
[5] Zhongkai Univ Agr & Engn, Coll Resources & Environm, 501 Zhongkai-Rd, Guangzhou, Peoples R China
[6] Univ Kitakyushu, 1-1 Hibikino Wakamatsuku, Kitakyushu, Fukuoka, Japan
关键词
GAC@Ni/Fe particle electrode; Sulfite; Electrocatalytic oxidation; Synergistic degradation; Reaction mechanism; DYEING WASTE-WATER; ELECTROCHEMICAL PROCESS; BISPHENOL-A; ELECTROCATALYTIC REMOVAL; CATALYZED AUTOXIDATION; ORGANIC CONTAMINANTS; AQUEOUS-SOLUTIONS; GREEN SYNTHESIS; LEAF EXTRACT; HUMIC-ACID;
D O I
10.1016/j.psep.2023.01.005
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The widespread production and use of antibiotics, which accumulate in the environment and lead to chronic poisoning of non-target organisms, causing potential safety risks to the environment and human health. In this study, GAC@Ni/Fe was used as particle electrode and sulfite hetero activator for synergistic degradation of Sulfamethazine(SMR) in a three-dimensional electrode reactor. Under the optimal experimental parameters (trough voltage = 5 V, sulfite addition =1 mM, particle electrode addition = 40 g, PH = 7), the removal rate of SMR can reach 96.91% within 30 min. The surface changes before and after the reaction at the GAC@Ni/Fe particle electrode was characterized using XRD, XPS, and FTIR. LSV, Tafel, and EIS were used to investigate the electrochemical performance of the GAC@Ni/Fe particle electrodes. The superiority of Three-Dimensional(3D) (GAC@Ni/Fe)/Sulfite system in SMR removal was confirmed by comparative experiments and reaction synergistic factor analysis. Electron paramagnetic resonance (EPR) and quenching experimental studies demonstrate that the degradation of SMR within the 3D (GAC@Ni/Fe)/Sulfite system is the result of both free radical and nonfree radicals, with center dot OH, SO4 center dot and O-1(2) contributing 51%, 12% and 37% to SMR removal, respectively. The 54.57% TOC removal rate (30 min) also demonstrates the efficient mineralization of SMR by the system. The results show that the 3D (GAC@Ni / Fe) / Sulfite system can be used to treat the wastewater containing SMR and other antibiotics, which is a green and ecologically friendly method with potential application value.
引用
收藏
页码:176 / 187
页数:12
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