Leaching of zinc and germanium from zinc oxide dust in sulfuric acid-ozone media

A new process of leaching zinc oxide dust by ozone oxidation in a sulfuric acid system was studied. The main factors affecting the leaching rate, such as ozone time, leaching temperature, initial acidity, leaching time, and liquid/solid mass ratio, were comprehensively investigated. The results show...

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Autores principales:	Chunfu Xin, Hongying Xia, Qi Zhang, Libo Zhang, Wei Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Ozone Oxidizing leaching Zinc oxide dust Germanium Leaching rate Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/9bf66f50366c4e72a728f385be8c1ead
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spelling	oai:doaj.org-article:9bf66f50366c4e72a728f385be8c1ead2021-11-20T04:58:10ZLeaching of zinc and germanium from zinc oxide dust in sulfuric acid-ozone media1878-535210.1016/j.arabjc.2021.103450https://doaj.org/article/9bf66f50366c4e72a728f385be8c1ead2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1878535221004652https://doaj.org/toc/1878-5352A new process of leaching zinc oxide dust by ozone oxidation in a sulfuric acid system was studied. The main factors affecting the leaching rate, such as ozone time, leaching temperature, initial acidity, leaching time, and liquid/solid mass ratio, were comprehensively investigated. The results show that leaching efficiency depends on all the above factors. The optimum conditions for leaching Zn and Ge from zinc oxide dust are as follows: ozone time 10 min, leaching temperature 90 ℃, initial acidity 160 g/L, leaching time 60 min, and liquid/solid mass ratio 7:1. Under the optimum conditions, the leaching rates of Zn and Ge are 95.79% and 93.65%, respectively. The leaching rates of zinc and germanium in the ozone leaching are 4.05% and 10.49% higher than those of the atmospheric leaching, respectively. Therefore, it is determined that ozone in solution plays a key role in rapidly oxidizing sulfide and releasing encapsulated germanium. Sulfuric acid-ozone media can efficiently extract Zn and Ge from zinc oxide dust.Chunfu XinHongying XiaQi ZhangLibo ZhangWei ZhangElsevierarticleOzoneOxidizing leachingZinc oxide dustGermaniumLeaching rateChemistryQD1-999ENArabian Journal of Chemistry, Vol 14, Iss 12, Pp 103450- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ozone Oxidizing leaching Zinc oxide dust Germanium Leaching rate Chemistry QD1-999
spellingShingle	Ozone Oxidizing leaching Zinc oxide dust Germanium Leaching rate Chemistry QD1-999 Chunfu Xin Hongying Xia Qi Zhang Libo Zhang Wei Zhang Leaching of zinc and germanium from zinc oxide dust in sulfuric acid-ozone media
description	A new process of leaching zinc oxide dust by ozone oxidation in a sulfuric acid system was studied. The main factors affecting the leaching rate, such as ozone time, leaching temperature, initial acidity, leaching time, and liquid/solid mass ratio, were comprehensively investigated. The results show that leaching efficiency depends on all the above factors. The optimum conditions for leaching Zn and Ge from zinc oxide dust are as follows: ozone time 10 min, leaching temperature 90 ℃, initial acidity 160 g/L, leaching time 60 min, and liquid/solid mass ratio 7:1. Under the optimum conditions, the leaching rates of Zn and Ge are 95.79% and 93.65%, respectively. The leaching rates of zinc and germanium in the ozone leaching are 4.05% and 10.49% higher than those of the atmospheric leaching, respectively. Therefore, it is determined that ozone in solution plays a key role in rapidly oxidizing sulfide and releasing encapsulated germanium. Sulfuric acid-ozone media can efficiently extract Zn and Ge from zinc oxide dust.
format	article
author	Chunfu Xin Hongying Xia Qi Zhang Libo Zhang Wei Zhang
author_facet	Chunfu Xin Hongying Xia Qi Zhang Libo Zhang Wei Zhang
author_sort	Chunfu Xin
title	Leaching of zinc and germanium from zinc oxide dust in sulfuric acid-ozone media
title_short	Leaching of zinc and germanium from zinc oxide dust in sulfuric acid-ozone media
title_full	Leaching of zinc and germanium from zinc oxide dust in sulfuric acid-ozone media
title_fullStr	Leaching of zinc and germanium from zinc oxide dust in sulfuric acid-ozone media
title_full_unstemmed	Leaching of zinc and germanium from zinc oxide dust in sulfuric acid-ozone media
title_sort	leaching of zinc and germanium from zinc oxide dust in sulfuric acid-ozone media
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/9bf66f50366c4e72a728f385be8c1ead
work_keys_str_mv	AT chunfuxin leachingofzincandgermaniumfromzincoxidedustinsulfuricacidozonemedia AT hongyingxia leachingofzincandgermaniumfromzincoxidedustinsulfuricacidozonemedia AT qizhang leachingofzincandgermaniumfromzincoxidedustinsulfuricacidozonemedia AT libozhang leachingofzincandgermaniumfromzincoxidedustinsulfuricacidozonemedia AT weizhang leachingofzincandgermaniumfromzincoxidedustinsulfuricacidozonemedia
_version_	1718419729813602304

Leaching of zinc and germanium from zinc oxide dust in sulfuric acid-ozone media

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