Electric conversion treatment of cobalt-containing wastewater

Long-term accumulation of cobalt-containing wastewater may also pollute groundwater and cause a large amount of loss of valuable metals. Therefore, the comprehensive utilization of cobalt-containing wastewater must be realized, especially as cobalt itself is a very important strategic resource. This...

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Autores principales:	Shengnan Lin, Xijuan Pan, Deliang Meng, Tingan Zhang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	co(oh)2 co3o4 membrane electrolysis wastewater Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/c2b9118280c74c2284b6af87a92b3ef3
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spelling	oai:doaj.org-article:c2b9118280c74c2284b6af87a92b3ef32021-11-06T10:56:20ZElectric conversion treatment of cobalt-containing wastewater0273-12231996-973210.2166/wst.2021.101https://doaj.org/article/c2b9118280c74c2284b6af87a92b3ef32021-04-01T00:00:00Zhttp://wst.iwaponline.com/content/83/8/1973https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Long-term accumulation of cobalt-containing wastewater may also pollute groundwater and cause a large amount of loss of valuable metals. Therefore, the comprehensive utilization of cobalt-containing wastewater must be realized, especially as cobalt itself is a very important strategic resource. This paper proposes a membrane electroconversion method to separate cobalt ions from cobalt-containing wastewater and prepare cobalt hydroxide. In addition, the electrolysis process was optimized, and single-factor experiments such as the initial concentration, cobalt ions, current density, temperature etc., and economic calculations such as current efficiency were explored. The electrolysis product was calcined as the precursor to obtain the oxide Co3O4, and the calcination experiment was also optimized. In this concentration range, more than 90% of cobalt can be recovered within 2 h. HIGHLIGHTS In this paper, a self-made two-chamber electrolytic cell was used to treat wastewater to prepare cobalt hydroxide, and the electrolysis product was used as a precursor for calcination to produce Co3O4.; A single-factor experiment was used to investigate its influence. Co3O4 calcined products, and their microscopic morphology inherited the nanosheet structure of cobalt hydroxide.;Shengnan LinXijuan PanDeliang MengTingan ZhangIWA Publishingarticleco(oh)2co3o4membrane electrolysiswastewaterEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 8, Pp 1973-1986 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	co(oh)2 co3o4 membrane electrolysis wastewater Environmental technology. Sanitary engineering TD1-1066
spellingShingle	co(oh)2 co3o4 membrane electrolysis wastewater Environmental technology. Sanitary engineering TD1-1066 Shengnan Lin Xijuan Pan Deliang Meng Tingan Zhang Electric conversion treatment of cobalt-containing wastewater
description	Long-term accumulation of cobalt-containing wastewater may also pollute groundwater and cause a large amount of loss of valuable metals. Therefore, the comprehensive utilization of cobalt-containing wastewater must be realized, especially as cobalt itself is a very important strategic resource. This paper proposes a membrane electroconversion method to separate cobalt ions from cobalt-containing wastewater and prepare cobalt hydroxide. In addition, the electrolysis process was optimized, and single-factor experiments such as the initial concentration, cobalt ions, current density, temperature etc., and economic calculations such as current efficiency were explored. The electrolysis product was calcined as the precursor to obtain the oxide Co3O4, and the calcination experiment was also optimized. In this concentration range, more than 90% of cobalt can be recovered within 2 h. HIGHLIGHTS In this paper, a self-made two-chamber electrolytic cell was used to treat wastewater to prepare cobalt hydroxide, and the electrolysis product was used as a precursor for calcination to produce Co3O4.; A single-factor experiment was used to investigate its influence. Co3O4 calcined products, and their microscopic morphology inherited the nanosheet structure of cobalt hydroxide.;
format	article
author	Shengnan Lin Xijuan Pan Deliang Meng Tingan Zhang
author_facet	Shengnan Lin Xijuan Pan Deliang Meng Tingan Zhang
author_sort	Shengnan Lin
title	Electric conversion treatment of cobalt-containing wastewater
title_short	Electric conversion treatment of cobalt-containing wastewater
title_full	Electric conversion treatment of cobalt-containing wastewater
title_fullStr	Electric conversion treatment of cobalt-containing wastewater
title_full_unstemmed	Electric conversion treatment of cobalt-containing wastewater
title_sort	electric conversion treatment of cobalt-containing wastewater
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/c2b9118280c74c2284b6af87a92b3ef3
work_keys_str_mv	AT shengnanlin electricconversiontreatmentofcobaltcontainingwastewater AT xijuanpan electricconversiontreatmentofcobaltcontainingwastewater AT deliangmeng electricconversiontreatmentofcobaltcontainingwastewater AT tinganzhang electricconversiontreatmentofcobaltcontainingwastewater
_version_	1718443758915158016

Electric conversion treatment of cobalt-containing wastewater

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