Removal of metal ions from water using oxygen plasma

Abstract Zinc ion dissolved in water is attempted to be removed by generating the oxides of zinc using the oxygen gas in dielectric barrier discharge (DBD) plasma system. The removal rate of zinc oxides’ production (ZnO and Zn(OH)2) are measured at different treatment periods by the oxygen plasma pe...

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Autores principales:	Sayma Khanom, Nobuya Hayashi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/68198fb74e764f488b028ccad515a4d7
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spelling	oai:doaj.org-article:68198fb74e764f488b028ccad515a4d72021-12-02T17:39:31ZRemoval of metal ions from water using oxygen plasma10.1038/s41598-021-88466-32045-2322https://doaj.org/article/68198fb74e764f488b028ccad515a4d72021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88466-3https://doaj.org/toc/2045-2322Abstract Zinc ion dissolved in water is attempted to be removed by generating the oxides of zinc using the oxygen gas in dielectric barrier discharge (DBD) plasma system. The removal rate of zinc oxides’ production (ZnO and Zn(OH)2) are measured at different treatment periods by the oxygen plasma penetration in water. The removal rate of the deposit increases initially and then decreases with the treatment period. The maximum removal rate (29%) of zinc ion from water is achieved at the treatment period of 10 min, where pH is lower (7.4). From FTIR the generation properties of zinc oxide can be recognized. Initially the amount of the deposit increases with the ozone treatment period due to production of both ZnO and Zn(OH)2. After that, the production of Zn(OH)4 2- increases even when the total removal rate of the deposit decreases. Therefore, to remove zinc ion from water forming metal oxide deposit, the penetration amount of the active oxygens to the water must be controlled to keep the pH lower than around 7.5. Because with increasing pH amount of removal rate of zinc oxides’ deposit decreases. The pH of the zinc dissolved water treated by ozone depends on both zinc ion and ozone concentration in water.Sayma KhanomNobuya HayashiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sayma Khanom Nobuya Hayashi Removal of metal ions from water using oxygen plasma
description	Abstract Zinc ion dissolved in water is attempted to be removed by generating the oxides of zinc using the oxygen gas in dielectric barrier discharge (DBD) plasma system. The removal rate of zinc oxides’ production (ZnO and Zn(OH)2) are measured at different treatment periods by the oxygen plasma penetration in water. The removal rate of the deposit increases initially and then decreases with the treatment period. The maximum removal rate (29%) of zinc ion from water is achieved at the treatment period of 10 min, where pH is lower (7.4). From FTIR the generation properties of zinc oxide can be recognized. Initially the amount of the deposit increases with the ozone treatment period due to production of both ZnO and Zn(OH)2. After that, the production of Zn(OH)4 2- increases even when the total removal rate of the deposit decreases. Therefore, to remove zinc ion from water forming metal oxide deposit, the penetration amount of the active oxygens to the water must be controlled to keep the pH lower than around 7.5. Because with increasing pH amount of removal rate of zinc oxides’ deposit decreases. The pH of the zinc dissolved water treated by ozone depends on both zinc ion and ozone concentration in water.
format	article
author	Sayma Khanom Nobuya Hayashi
author_facet	Sayma Khanom Nobuya Hayashi
author_sort	Sayma Khanom
title	Removal of metal ions from water using oxygen plasma
title_short	Removal of metal ions from water using oxygen plasma
title_full	Removal of metal ions from water using oxygen plasma
title_fullStr	Removal of metal ions from water using oxygen plasma
title_full_unstemmed	Removal of metal ions from water using oxygen plasma
title_sort	removal of metal ions from water using oxygen plasma
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/68198fb74e764f488b028ccad515a4d7
work_keys_str_mv	AT saymakhanom removalofmetalionsfromwaterusingoxygenplasma AT nobuyahayashi removalofmetalionsfromwaterusingoxygenplasma
_version_	1718379826475171840

Removal of metal ions from water using oxygen plasma

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