Electrochemical degradation of chloramphenicol using Ti-based SnO2–Sb–Ni electrode

Antibiotic residues may be very harmful in aquatic environments, because of limited treatment efficiency of traditional treatment methods. An electrochemical system with a Ti-based SnO2–Sb–Ni anode was developed to degrade a typical antibiotic chloramphenicol (CAP) in water. The electrode was prepar...

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Autores principales:	Dan Li, Libao Zhang, Weichun Gao, Jing Meng, Yinyan Guan, Jiyan Liang, Xinjun Shen
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	chloramphenicol electrocatalytic ti-based sno2–sb–ni electrode Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/2ca2483f28f04c0b907f06d0f764115f
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spelling	oai:doaj.org-article:2ca2483f28f04c0b907f06d0f764115f2021-11-06T11:16:18ZElectrochemical degradation of chloramphenicol using Ti-based SnO2–Sb–Ni electrode0273-12231996-973210.2166/wst.2021.226https://doaj.org/article/2ca2483f28f04c0b907f06d0f764115f2021-08-01T00:00:00Zhttp://wst.iwaponline.com/content/84/3/512https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Antibiotic residues may be very harmful in aquatic environments, because of limited treatment efficiency of traditional treatment methods. An electrochemical system with a Ti-based SnO2–Sb–Ni anode was developed to degrade a typical antibiotic chloramphenicol (CAP) in water. The electrode was prepared using a sol–gel method. The performance of electrode materials, impact factors and dynamic characteristics were evaluated. The Ti-based SnO2–Sb–Ni electrode was compact and uniform as shown by characterization using SEM and XRD. The electrocatalytic oxidation of CAP was carried out in a single-chamber reactor by using a Ti-based SnO2–Sb–Ni electrode. For 100 mg L−1 CAP, the CAP removal ratio of 100% and the TOC removal ratio of 60% were obtained at the current density of 20 mA cm−2 and in a neutral electrolyte at 300 min. Kinetic investigation has shown that the electro-oxidation of CAP on a Ti-based SnO2–Sb–Ni electrode displayed a pseudo-first-order kinetic model. Free radical quenching experiments presented that the oxidation of CAP on Ti-based SnO2–Sb–Ni electrode resulted from the synergistic effect of direct oxidation and indirect oxidation (·OH and ·SO4−). Doping Ni on the Ti/SnO2–Sb electrode for CAP degradation was presented in this paper, showing its great application potential in the area of antibiotic and halogenated organic pollutant degradation. HIGHLIGHTS Ti/SnO2–Sb–Ni anodes were first applied to remove CAP by electrocatalytic oxidation.; The removal ratios of CAP and TOC by anodic oxidation and cathodic reduction were first compared.; The degradation of CAP on the Ti/SnO2–Sb–Ni electrode results from the synergistic effect of direct oxidation and indirect oxidation (·OH and ·SO4−). ·SO4− and direct oxidation contributed much to the degradation of CAP.;Dan LiLibao ZhangWeichun GaoJing MengYinyan GuanJiyan LiangXinjun ShenIWA Publishingarticlechloramphenicolelectrocatalyticti-based sno2–sb–ni electrodeEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 3, Pp 512-523 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	chloramphenicol electrocatalytic ti-based sno2–sb–ni electrode Environmental technology. Sanitary engineering TD1-1066
spellingShingle	chloramphenicol electrocatalytic ti-based sno2–sb–ni electrode Environmental technology. Sanitary engineering TD1-1066 Dan Li Libao Zhang Weichun Gao Jing Meng Yinyan Guan Jiyan Liang Xinjun Shen Electrochemical degradation of chloramphenicol using Ti-based SnO2–Sb–Ni electrode
description	Antibiotic residues may be very harmful in aquatic environments, because of limited treatment efficiency of traditional treatment methods. An electrochemical system with a Ti-based SnO2–Sb–Ni anode was developed to degrade a typical antibiotic chloramphenicol (CAP) in water. The electrode was prepared using a sol–gel method. The performance of electrode materials, impact factors and dynamic characteristics were evaluated. The Ti-based SnO2–Sb–Ni electrode was compact and uniform as shown by characterization using SEM and XRD. The electrocatalytic oxidation of CAP was carried out in a single-chamber reactor by using a Ti-based SnO2–Sb–Ni electrode. For 100 mg L−1 CAP, the CAP removal ratio of 100% and the TOC removal ratio of 60% were obtained at the current density of 20 mA cm−2 and in a neutral electrolyte at 300 min. Kinetic investigation has shown that the electro-oxidation of CAP on a Ti-based SnO2–Sb–Ni electrode displayed a pseudo-first-order kinetic model. Free radical quenching experiments presented that the oxidation of CAP on Ti-based SnO2–Sb–Ni electrode resulted from the synergistic effect of direct oxidation and indirect oxidation (·OH and ·SO4−). Doping Ni on the Ti/SnO2–Sb electrode for CAP degradation was presented in this paper, showing its great application potential in the area of antibiotic and halogenated organic pollutant degradation. HIGHLIGHTS Ti/SnO2–Sb–Ni anodes were first applied to remove CAP by electrocatalytic oxidation.; The removal ratios of CAP and TOC by anodic oxidation and cathodic reduction were first compared.; The degradation of CAP on the Ti/SnO2–Sb–Ni electrode results from the synergistic effect of direct oxidation and indirect oxidation (·OH and ·SO4−). ·SO4− and direct oxidation contributed much to the degradation of CAP.;
format	article
author	Dan Li Libao Zhang Weichun Gao Jing Meng Yinyan Guan Jiyan Liang Xinjun Shen
author_facet	Dan Li Libao Zhang Weichun Gao Jing Meng Yinyan Guan Jiyan Liang Xinjun Shen
author_sort	Dan Li
title	Electrochemical degradation of chloramphenicol using Ti-based SnO2–Sb–Ni electrode
title_short	Electrochemical degradation of chloramphenicol using Ti-based SnO2–Sb–Ni electrode
title_full	Electrochemical degradation of chloramphenicol using Ti-based SnO2–Sb–Ni electrode
title_fullStr	Electrochemical degradation of chloramphenicol using Ti-based SnO2–Sb–Ni electrode
title_full_unstemmed	Electrochemical degradation of chloramphenicol using Ti-based SnO2–Sb–Ni electrode
title_sort	electrochemical degradation of chloramphenicol using ti-based sno2–sb–ni electrode
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/2ca2483f28f04c0b907f06d0f764115f
work_keys_str_mv	AT danli electrochemicaldegradationofchloramphenicolusingtibasedsno2sbnielectrode AT libaozhang electrochemicaldegradationofchloramphenicolusingtibasedsno2sbnielectrode AT weichungao electrochemicaldegradationofchloramphenicolusingtibasedsno2sbnielectrode AT jingmeng electrochemicaldegradationofchloramphenicolusingtibasedsno2sbnielectrode AT yinyanguan electrochemicaldegradationofchloramphenicolusingtibasedsno2sbnielectrode AT jiyanliang electrochemicaldegradationofchloramphenicolusingtibasedsno2sbnielectrode AT xinjunshen electrochemicaldegradationofchloramphenicolusingtibasedsno2sbnielectrode
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Electrochemical degradation of chloramphenicol using Ti-based SnO2–Sb–Ni electrode

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