Enhancement of the electro-activated persulfate process in dye removal using graphene oxide nanoparticle

This study aimed to improve the speed of the electrochemical process by graphene oxide nanoparticle as a current accelerator in Acid Blue 25 removal from aqueous solutions. To do so, the effect of different parameters including pH, dye concentration, sodium persulfate concentration, the ratio of sod...

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Autores principales:	Bita Ayati, Zeinab Ghorbani
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	acid blue 25 electrochemical process energy consumption ferrous ion graphene oxide nanoparticle Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/ddf09fe93234490bb87c800f4ec59334
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spelling	oai:doaj.org-article:ddf09fe93234490bb87c800f4ec593342021-11-06T11:01:42ZEnhancement of the electro-activated persulfate process in dye removal using graphene oxide nanoparticle0273-12231996-973210.2166/wst.2021.128https://doaj.org/article/ddf09fe93234490bb87c800f4ec593342021-05-01T00:00:00Zhttp://wst.iwaponline.com/content/83/9/2169https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732This study aimed to improve the speed of the electrochemical process by graphene oxide nanoparticle as a current accelerator in Acid Blue 25 removal from aqueous solutions. To do so, the effect of different parameters including pH, dye concentration, sodium persulfate concentration, the ratio of sodium persulfate to iron (II) sulfate concentration, current density, and the distance between electrodes was investigated on dye removal. Under optimal conditions of pH = 5, dye concentration = 200 mg/L, sodium persulfate concentration = 500 mg/L, iron (II) sulfate concentration = 100 mg/L, current density = 16.67 mA/cm2, and electrode distance = 2 cm, 95% of dye was removed after 60 min in the electro-activated persulfate process; while the modified electro-activated persulfate process achieved 95% dye removal after only 40 min under the same conditions. This system was able to remove 90% of dye after 60 min at a higher concentration (300 mg/L). Also, the modified electro-activated persulfate process obtained the removal of 80% of COD, and 54% of TOC after 180 min in the mentioned conditions, for the dye concentration of 300 mg/L. HIGHLIGHTS Geraphene oxide nanoparticles raised the reaction rate by 17% by increasing the conductivity.; The increase in conductivity, decreased the energy consumption by 50%.; More 100 mg/L dye can be removed by the modified system.; The oxidation state reduction made the dye structure simpler with less toxicity.;Bita AyatiZeinab GhorbaniIWA Publishingarticleacid blue 25electrochemical processenergy consumptionferrous iongraphene oxide nanoparticleEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 9, Pp 2169-2182 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	acid blue 25 electrochemical process energy consumption ferrous ion graphene oxide nanoparticle Environmental technology. Sanitary engineering TD1-1066
spellingShingle	acid blue 25 electrochemical process energy consumption ferrous ion graphene oxide nanoparticle Environmental technology. Sanitary engineering TD1-1066 Bita Ayati Zeinab Ghorbani Enhancement of the electro-activated persulfate process in dye removal using graphene oxide nanoparticle
description	This study aimed to improve the speed of the electrochemical process by graphene oxide nanoparticle as a current accelerator in Acid Blue 25 removal from aqueous solutions. To do so, the effect of different parameters including pH, dye concentration, sodium persulfate concentration, the ratio of sodium persulfate to iron (II) sulfate concentration, current density, and the distance between electrodes was investigated on dye removal. Under optimal conditions of pH = 5, dye concentration = 200 mg/L, sodium persulfate concentration = 500 mg/L, iron (II) sulfate concentration = 100 mg/L, current density = 16.67 mA/cm2, and electrode distance = 2 cm, 95% of dye was removed after 60 min in the electro-activated persulfate process; while the modified electro-activated persulfate process achieved 95% dye removal after only 40 min under the same conditions. This system was able to remove 90% of dye after 60 min at a higher concentration (300 mg/L). Also, the modified electro-activated persulfate process obtained the removal of 80% of COD, and 54% of TOC after 180 min in the mentioned conditions, for the dye concentration of 300 mg/L. HIGHLIGHTS Geraphene oxide nanoparticles raised the reaction rate by 17% by increasing the conductivity.; The increase in conductivity, decreased the energy consumption by 50%.; More 100 mg/L dye can be removed by the modified system.; The oxidation state reduction made the dye structure simpler with less toxicity.;
format	article
author	Bita Ayati Zeinab Ghorbani
author_facet	Bita Ayati Zeinab Ghorbani
author_sort	Bita Ayati
title	Enhancement of the electro-activated persulfate process in dye removal using graphene oxide nanoparticle
title_short	Enhancement of the electro-activated persulfate process in dye removal using graphene oxide nanoparticle
title_full	Enhancement of the electro-activated persulfate process in dye removal using graphene oxide nanoparticle
title_fullStr	Enhancement of the electro-activated persulfate process in dye removal using graphene oxide nanoparticle
title_full_unstemmed	Enhancement of the electro-activated persulfate process in dye removal using graphene oxide nanoparticle
title_sort	enhancement of the electro-activated persulfate process in dye removal using graphene oxide nanoparticle
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/ddf09fe93234490bb87c800f4ec59334
work_keys_str_mv	AT bitaayati enhancementoftheelectroactivatedpersulfateprocessindyeremovalusinggrapheneoxidenanoparticle AT zeinabghorbani enhancementoftheelectroactivatedpersulfateprocessindyeremovalusinggrapheneoxidenanoparticle
_version_	1718443763770064896

Enhancement of the electro-activated persulfate process in dye removal using graphene oxide nanoparticle

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