Azo Dye Adsorption onto Cobalt Oxide: Isotherm, Kinetics, and Error Analysis Studies

The current study focused on utilizing cobalt oxide to eliminate hazardous Eriochrome Black T (EBT) dye. The impact of pH (2, 4, 7, 8, and 10) and temperature (45, 50, and 55 °C) was examined for EBT removal. The results show that the maximum sorption occurred at pH = 2 and that the removal percenta...

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Autores principales:	Hawraa Kassem Hami, Ruba Fahmi Abbas, Shireen Abdulmohsin Azeez, Nedaa Ibrahim Mahdi
Formato:	article
Lenguaje:	EN
Publicado:	Department of Chemistry, Universitas Gadjah Mada 2021
Materias:	eriochrome black t dye adsorption isotherm kinetic error analysis Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/97306f7553894bc8a352a8eacfb75265
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spelling	oai:doaj.org-article:97306f7553894bc8a352a8eacfb752652021-12-02T18:38:04ZAzo Dye Adsorption onto Cobalt Oxide: Isotherm, Kinetics, and Error Analysis Studies1411-94202460-157810.22146/ijc.62326https://doaj.org/article/97306f7553894bc8a352a8eacfb752652021-10-01T00:00:00Zhttps://jurnal.ugm.ac.id/ijc/article/view/62326https://doaj.org/toc/1411-9420https://doaj.org/toc/2460-1578The current study focused on utilizing cobalt oxide to eliminate hazardous Eriochrome Black T (EBT) dye. The impact of pH (2, 4, 7, 8, and 10) and temperature (45, 50, and 55 °C) was examined for EBT removal. The results show that the maximum sorption occurred at pH = 2 and that the removal percentage increased with increasing temperature. Five non-linear regression methods were used to predict the best isotherm and kinetic models. A coefficient of non-determination, K2, was very helpful for selecting the RMSD function as a preferable error function among the five methods. Isothermal models to illustrate equilibrium sorption information, the Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich models were used. The results showed that the Langmuir model (R2 = 0.99) was the most favorable, indicating monolayer sorption of EBT occurred. The kinetics models were analyzed using pseudo-first-order and pseudo-second-order whereas the sorption information was well described by the pseudo-second-order model (R2 = 0.99). The results of the thermodynamic study appeared that the adsorption of EBT was endothermic, feasible, spontaneous, and physical adsorption.Hawraa Kassem HamiRuba Fahmi AbbasShireen Abdulmohsin AzeezNedaa Ibrahim MahdiDepartment of Chemistry, Universitas Gadjah Madaarticleeriochrome black t dyeadsorptionisothermkineticerror analysisChemistryQD1-999ENIndonesian Journal of Chemistry, Vol 21, Iss 5, Pp 1148-1157 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	eriochrome black t dye adsorption isotherm kinetic error analysis Chemistry QD1-999
spellingShingle	eriochrome black t dye adsorption isotherm kinetic error analysis Chemistry QD1-999 Hawraa Kassem Hami Ruba Fahmi Abbas Shireen Abdulmohsin Azeez Nedaa Ibrahim Mahdi Azo Dye Adsorption onto Cobalt Oxide: Isotherm, Kinetics, and Error Analysis Studies
description	The current study focused on utilizing cobalt oxide to eliminate hazardous Eriochrome Black T (EBT) dye. The impact of pH (2, 4, 7, 8, and 10) and temperature (45, 50, and 55 °C) was examined for EBT removal. The results show that the maximum sorption occurred at pH = 2 and that the removal percentage increased with increasing temperature. Five non-linear regression methods were used to predict the best isotherm and kinetic models. A coefficient of non-determination, K2, was very helpful for selecting the RMSD function as a preferable error function among the five methods. Isothermal models to illustrate equilibrium sorption information, the Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich models were used. The results showed that the Langmuir model (R2 = 0.99) was the most favorable, indicating monolayer sorption of EBT occurred. The kinetics models were analyzed using pseudo-first-order and pseudo-second-order whereas the sorption information was well described by the pseudo-second-order model (R2 = 0.99). The results of the thermodynamic study appeared that the adsorption of EBT was endothermic, feasible, spontaneous, and physical adsorption.
format	article
author	Hawraa Kassem Hami Ruba Fahmi Abbas Shireen Abdulmohsin Azeez Nedaa Ibrahim Mahdi
author_facet	Hawraa Kassem Hami Ruba Fahmi Abbas Shireen Abdulmohsin Azeez Nedaa Ibrahim Mahdi
author_sort	Hawraa Kassem Hami
title	Azo Dye Adsorption onto Cobalt Oxide: Isotherm, Kinetics, and Error Analysis Studies
title_short	Azo Dye Adsorption onto Cobalt Oxide: Isotherm, Kinetics, and Error Analysis Studies
title_full	Azo Dye Adsorption onto Cobalt Oxide: Isotherm, Kinetics, and Error Analysis Studies
title_fullStr	Azo Dye Adsorption onto Cobalt Oxide: Isotherm, Kinetics, and Error Analysis Studies
title_full_unstemmed	Azo Dye Adsorption onto Cobalt Oxide: Isotherm, Kinetics, and Error Analysis Studies
title_sort	azo dye adsorption onto cobalt oxide: isotherm, kinetics, and error analysis studies
publisher	Department of Chemistry, Universitas Gadjah Mada
publishDate	2021
url	https://doaj.org/article/97306f7553894bc8a352a8eacfb75265
work_keys_str_mv	AT hawraakassemhami azodyeadsorptionontocobaltoxideisothermkineticsanderroranalysisstudies AT rubafahmiabbas azodyeadsorptionontocobaltoxideisothermkineticsanderroranalysisstudies AT shireenabdulmohsinazeez azodyeadsorptionontocobaltoxideisothermkineticsanderroranalysisstudies AT nedaaibrahimmahdi azodyeadsorptionontocobaltoxideisothermkineticsanderroranalysisstudies
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Azo Dye Adsorption onto Cobalt Oxide: Isotherm, Kinetics, and Error Analysis Studies

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