Removal of Basic Orange 2 dye and Ni2+ from aqueous solutions using alkaline-modified nanoclay

In the present research, the removal of Basic Orange 2 (BO2) dye using alkaline-modified clay nanoparticles was studied. To characterize the adsorbent, XRD, FTIR, FESEM, EDX, BET and BJH analyses were performed. The effect of the variables influencing the dye adsorption process such as adsorbent dos...

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Autores principales:	Armin Geroeeyan, Ali Niazi, Elaheh Konoz
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	adsorption kinetics nanoclay removal surface modification thermodynamics Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/fd8937bedd0f410c9d646fbe7c5bb369
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spelling	oai:doaj.org-article:fd8937bedd0f410c9d646fbe7c5bb3692021-11-06T11:01:57ZRemoval of Basic Orange 2 dye and Ni2+ from aqueous solutions using alkaline-modified nanoclay0273-12231996-973210.2166/wst.2021.121https://doaj.org/article/fd8937bedd0f410c9d646fbe7c5bb3692021-05-01T00:00:00Zhttp://wst.iwaponline.com/content/83/9/2271https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732In the present research, the removal of Basic Orange 2 (BO2) dye using alkaline-modified clay nanoparticles was studied. To characterize the adsorbent, XRD, FTIR, FESEM, EDX, BET and BJH analyses were performed. The effect of the variables influencing the dye adsorption process such as adsorbent dose, contact time, pH, stirring rate, temperature, and initial dye concentration was investigated. Furthermore, the high efficiency of Ni2+ removal indicated that it is possible to remove both dye and metal cation under the same optimum conditions. The experimental data were analyzed by Langmuir and Freundlich isotherm models. Fitting the experimental data to Langmuir isotherm indicated that the monolayer adsorption of dye occurred at homogeneous sites. Experimental data were also analyzed with pseudo-first-order, pseudo-second-order, and intra-particle diffusion kinetic equations for kinetic modeling of the dye removal process. The adsorption results indicated that the process follows a pseudo-second-order kinetic model. The thermodynamic parameters of the dye adsorption process such as enthalpy, entropy, and Gibbs free energy changes were calculated and revealed that the adsorption process was spontaneous and endothermic in nature. The results presented the high potential of the modified nanoclay as a cost-effective adsorbent for the removal of BO2 dye and Ni2+ from aqueous medium. HIGHLIGHTS The decolorization kinetics of BO2 was followed by a pseudo-second-order kinetic model.; The adsorption of BO2 was spontaneous and endothermic.; The efficiency of Ni2+ removal confirmed the possibility of the removal of BO2 dye and Ni2+ simultaneously under optimum conditions.; The modified nanoclay can be a potential candidate for removing BO2 dye and Ni2+ from textile wastewater.;Armin GeroeeyanAli NiaziElaheh KonozIWA Publishingarticleadsorptionkineticsnanoclayremovalsurface modificationthermodynamicsEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 9, Pp 2271-2286 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adsorption kinetics nanoclay removal surface modification thermodynamics Environmental technology. Sanitary engineering TD1-1066
spellingShingle	adsorption kinetics nanoclay removal surface modification thermodynamics Environmental technology. Sanitary engineering TD1-1066 Armin Geroeeyan Ali Niazi Elaheh Konoz Removal of Basic Orange 2 dye and Ni2+ from aqueous solutions using alkaline-modified nanoclay
description	In the present research, the removal of Basic Orange 2 (BO2) dye using alkaline-modified clay nanoparticles was studied. To characterize the adsorbent, XRD, FTIR, FESEM, EDX, BET and BJH analyses were performed. The effect of the variables influencing the dye adsorption process such as adsorbent dose, contact time, pH, stirring rate, temperature, and initial dye concentration was investigated. Furthermore, the high efficiency of Ni2+ removal indicated that it is possible to remove both dye and metal cation under the same optimum conditions. The experimental data were analyzed by Langmuir and Freundlich isotherm models. Fitting the experimental data to Langmuir isotherm indicated that the monolayer adsorption of dye occurred at homogeneous sites. Experimental data were also analyzed with pseudo-first-order, pseudo-second-order, and intra-particle diffusion kinetic equations for kinetic modeling of the dye removal process. The adsorption results indicated that the process follows a pseudo-second-order kinetic model. The thermodynamic parameters of the dye adsorption process such as enthalpy, entropy, and Gibbs free energy changes were calculated and revealed that the adsorption process was spontaneous and endothermic in nature. The results presented the high potential of the modified nanoclay as a cost-effective adsorbent for the removal of BO2 dye and Ni2+ from aqueous medium. HIGHLIGHTS The decolorization kinetics of BO2 was followed by a pseudo-second-order kinetic model.; The adsorption of BO2 was spontaneous and endothermic.; The efficiency of Ni2+ removal confirmed the possibility of the removal of BO2 dye and Ni2+ simultaneously under optimum conditions.; The modified nanoclay can be a potential candidate for removing BO2 dye and Ni2+ from textile wastewater.;
format	article
author	Armin Geroeeyan Ali Niazi Elaheh Konoz
author_facet	Armin Geroeeyan Ali Niazi Elaheh Konoz
author_sort	Armin Geroeeyan
title	Removal of Basic Orange 2 dye and Ni2+ from aqueous solutions using alkaline-modified nanoclay
title_short	Removal of Basic Orange 2 dye and Ni2+ from aqueous solutions using alkaline-modified nanoclay
title_full	Removal of Basic Orange 2 dye and Ni2+ from aqueous solutions using alkaline-modified nanoclay
title_fullStr	Removal of Basic Orange 2 dye and Ni2+ from aqueous solutions using alkaline-modified nanoclay
title_full_unstemmed	Removal of Basic Orange 2 dye and Ni2+ from aqueous solutions using alkaline-modified nanoclay
title_sort	removal of basic orange 2 dye and ni2+ from aqueous solutions using alkaline-modified nanoclay
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/fd8937bedd0f410c9d646fbe7c5bb369
work_keys_str_mv	AT armingeroeeyan removalofbasicorange2dyeandni2fromaqueoussolutionsusingalkalinemodifiednanoclay AT aliniazi removalofbasicorange2dyeandni2fromaqueoussolutionsusingalkalinemodifiednanoclay AT elahehkonoz removalofbasicorange2dyeandni2fromaqueoussolutionsusingalkalinemodifiednanoclay
_version_	1718443772357902336

Removal of Basic Orange 2 dye and Ni2+ from aqueous solutions using alkaline-modified nanoclay

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