Cost-effective method of benzene-containing wastewater treatment using floating electro-Fenton system

Traditional electro-Fenton systems must continuously supply oxygen to the cathode, which leads to extensive volatilisation of benzene in solutions. In this study, we adopted a floating cathode electro-Fenton system without bubbling oxygen into the solution to treat benzene-containing wastewater. The...

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Autores principales:	Hui Qiao, Mingqi He, Qiushi Wang, Shuaishuai Han, Haiqian Zhao, Zhonghua Wang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	benzene electro-fenton floating cathode wastewater Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/1b8ea04d47324adf8e4e7dbca5ec120b
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spelling	oai:doaj.org-article:1b8ea04d47324adf8e4e7dbca5ec120b2021-11-06T11:01:44ZCost-effective method of benzene-containing wastewater treatment using floating electro-Fenton system0273-12231996-973210.2166/wst.2021.124https://doaj.org/article/1b8ea04d47324adf8e4e7dbca5ec120b2021-05-01T00:00:00Zhttp://wst.iwaponline.com/content/83/9/2183https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Traditional electro-Fenton systems must continuously supply oxygen to the cathode, which leads to extensive volatilisation of benzene in solutions. In this study, we adopted a floating cathode electro-Fenton system without bubbling oxygen into the solution to treat benzene-containing wastewater. The effects of the floating cathode position and main reaction parameters on benzene degradation were analysed, and the degradation cost was estimated. The results indicated that the electro-Fenton system with floating cathode could effectively degrade benzene in solutions. For the cathode, the complete utilisation of air and oxygen released from the anode was crucial. The benzene degradation rate increased with an increase in benzene concentrations. Additionally, pH mainly affected the existing ionic state of iron and production ratio of active substances. The current intensity significantly influenced the reaction activity. Using the floating cathode electro-Fenton method, the benzene removal ratio in the solution could reach 74.80% after 60 min under the optimum reaction conditions. For the floating cathode electro-Fenton system, the cost of treating benzene-containing sewage per cubic metre was $1.2187, which is significantly lower than that for traditional electro-Fenton technology ($1.4000). Hence, the floating cathode electro-Fenton system is an economical and efficient method for benzene degradation in solutions. HIGHLIGHTS •A floating cathode electro-Fenton system was used for the treatment of benzene-containing wastewater.; •The problem of benzene volatilisation was solved during the electro-Fenton degradation process.; •The floating cathode electro-Fenton is an economical method for the wastewater treatment.;Hui QiaoMingqi HeQiushi WangShuaishuai HanHaiqian ZhaoZhonghua WangIWA Publishingarticlebenzeneelectro-fentonfloating cathodewastewaterEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 9, Pp 2183-2191 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	benzene electro-fenton floating cathode wastewater Environmental technology. Sanitary engineering TD1-1066
spellingShingle	benzene electro-fenton floating cathode wastewater Environmental technology. Sanitary engineering TD1-1066 Hui Qiao Mingqi He Qiushi Wang Shuaishuai Han Haiqian Zhao Zhonghua Wang Cost-effective method of benzene-containing wastewater treatment using floating electro-Fenton system
description	Traditional electro-Fenton systems must continuously supply oxygen to the cathode, which leads to extensive volatilisation of benzene in solutions. In this study, we adopted a floating cathode electro-Fenton system without bubbling oxygen into the solution to treat benzene-containing wastewater. The effects of the floating cathode position and main reaction parameters on benzene degradation were analysed, and the degradation cost was estimated. The results indicated that the electro-Fenton system with floating cathode could effectively degrade benzene in solutions. For the cathode, the complete utilisation of air and oxygen released from the anode was crucial. The benzene degradation rate increased with an increase in benzene concentrations. Additionally, pH mainly affected the existing ionic state of iron and production ratio of active substances. The current intensity significantly influenced the reaction activity. Using the floating cathode electro-Fenton method, the benzene removal ratio in the solution could reach 74.80% after 60 min under the optimum reaction conditions. For the floating cathode electro-Fenton system, the cost of treating benzene-containing sewage per cubic metre was $1.2187, which is significantly lower than that for traditional electro-Fenton technology ($1.4000). Hence, the floating cathode electro-Fenton system is an economical and efficient method for benzene degradation in solutions. HIGHLIGHTS •A floating cathode electro-Fenton system was used for the treatment of benzene-containing wastewater.; •The problem of benzene volatilisation was solved during the electro-Fenton degradation process.; •The floating cathode electro-Fenton is an economical method for the wastewater treatment.;
format	article
author	Hui Qiao Mingqi He Qiushi Wang Shuaishuai Han Haiqian Zhao Zhonghua Wang
author_facet	Hui Qiao Mingqi He Qiushi Wang Shuaishuai Han Haiqian Zhao Zhonghua Wang
author_sort	Hui Qiao
title	Cost-effective method of benzene-containing wastewater treatment using floating electro-Fenton system
title_short	Cost-effective method of benzene-containing wastewater treatment using floating electro-Fenton system
title_full	Cost-effective method of benzene-containing wastewater treatment using floating electro-Fenton system
title_fullStr	Cost-effective method of benzene-containing wastewater treatment using floating electro-Fenton system
title_full_unstemmed	Cost-effective method of benzene-containing wastewater treatment using floating electro-Fenton system
title_sort	cost-effective method of benzene-containing wastewater treatment using floating electro-fenton system
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/1b8ea04d47324adf8e4e7dbca5ec120b
work_keys_str_mv	AT huiqiao costeffectivemethodofbenzenecontainingwastewatertreatmentusingfloatingelectrofentonsystem AT mingqihe costeffectivemethodofbenzenecontainingwastewatertreatmentusingfloatingelectrofentonsystem AT qiushiwang costeffectivemethodofbenzenecontainingwastewatertreatmentusingfloatingelectrofentonsystem AT shuaishuaihan costeffectivemethodofbenzenecontainingwastewatertreatmentusingfloatingelectrofentonsystem AT haiqianzhao costeffectivemethodofbenzenecontainingwastewatertreatmentusingfloatingelectrofentonsystem AT zhonghuawang costeffectivemethodofbenzenecontainingwastewatertreatmentusingfloatingelectrofentonsystem
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Cost-effective method of benzene-containing wastewater treatment using floating electro-Fenton system

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