Characterization and Utilization of Sulphuric Acid and Bitter Leaf Extract Activated Carbon from Rice Husk for Zn(II) Adsorption

The world is clamoring for green synthetic modes of scientific and technological operations. From this point of view, an attempt was made to prepare activated carbon from rice husk using aqueous bitter leaf extract and a mineral acid (H2SO4) separately. The surface characteristics and the adsorption...

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Autores principales:	Ilesanmi Osasona, Ujiro Bestow Kanuhor
Formato:	article
Lenguaje:	EN
Publicado:	Department of Chemistry, Universitas Gadjah Mada 2021
Materias:	adsorption green synthesis rice husk bitter leaf activated carbon Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/eda3a1792e7447b3b3fc109644cd89dc
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spelling	oai:doaj.org-article:eda3a1792e7447b3b3fc109644cd89dc2021-12-02T14:45:03ZCharacterization and Utilization of Sulphuric Acid and Bitter Leaf Extract Activated Carbon from Rice Husk for Zn(II) Adsorption1411-94202460-157810.22146/ijc.54786https://doaj.org/article/eda3a1792e7447b3b3fc109644cd89dc2021-03-01T00:00:00Zhttps://jurnal.ugm.ac.id/ijc/article/view/54786https://doaj.org/toc/1411-9420https://doaj.org/toc/2460-1578The world is clamoring for green synthetic modes of scientific and technological operations. From this point of view, an attempt was made to prepare activated carbon from rice husk using aqueous bitter leaf extract and a mineral acid (H2SO4) separately. The surface characteristics and the adsorption properties of the activated carbons from both methods were compared. The effects of adsorption variables on the adsorption of Zn(II) by bitter leaf extract activated carbon (RHAC1) and H2SO4 activated carbon (RHAC2) were conducted through batch studies. The morphological characterization revealed RHAC1 to be fibrous, more porous and contained finer particles than the chemical-activated counterpart. The role of hydroxyl and carbonyl groups in the adsorption of Zn(II) was pivotal. The optimum pH values for the adsorption of Zn(II) by both samples was 7. The adsorption kinetics and equilibrium isotherm obeyed Elovich and Freundlich models respectively while the evaluated Langmuir qmax were 71.47 and 67.12 mg g–1 for RHAC1 and RHAC2 respectively. The thermodynamic parameters revealed that the process was endothermic and spontaneous at all evaluated temperatures. Therefore, bitter leaf aqueous extract, as an activating agent for carbon production, could serve as a better or close substitute for the less environment-friendly H2SO4.Ilesanmi OsasonaUjiro Bestow KanuhorDepartment of Chemistry, Universitas Gadjah Madaarticleadsorptiongreen synthesisrice huskbitter leafactivated carbonChemistryQD1-999ENIndonesian Journal of Chemistry, Vol 21, Iss 2, Pp 318-331 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adsorption green synthesis rice husk bitter leaf activated carbon Chemistry QD1-999
spellingShingle	adsorption green synthesis rice husk bitter leaf activated carbon Chemistry QD1-999 Ilesanmi Osasona Ujiro Bestow Kanuhor Characterization and Utilization of Sulphuric Acid and Bitter Leaf Extract Activated Carbon from Rice Husk for Zn(II) Adsorption
description	The world is clamoring for green synthetic modes of scientific and technological operations. From this point of view, an attempt was made to prepare activated carbon from rice husk using aqueous bitter leaf extract and a mineral acid (H2SO4) separately. The surface characteristics and the adsorption properties of the activated carbons from both methods were compared. The effects of adsorption variables on the adsorption of Zn(II) by bitter leaf extract activated carbon (RHAC1) and H2SO4 activated carbon (RHAC2) were conducted through batch studies. The morphological characterization revealed RHAC1 to be fibrous, more porous and contained finer particles than the chemical-activated counterpart. The role of hydroxyl and carbonyl groups in the adsorption of Zn(II) was pivotal. The optimum pH values for the adsorption of Zn(II) by both samples was 7. The adsorption kinetics and equilibrium isotherm obeyed Elovich and Freundlich models respectively while the evaluated Langmuir qmax were 71.47 and 67.12 mg g–1 for RHAC1 and RHAC2 respectively. The thermodynamic parameters revealed that the process was endothermic and spontaneous at all evaluated temperatures. Therefore, bitter leaf aqueous extract, as an activating agent for carbon production, could serve as a better or close substitute for the less environment-friendly H2SO4.
format	article
author	Ilesanmi Osasona Ujiro Bestow Kanuhor
author_facet	Ilesanmi Osasona Ujiro Bestow Kanuhor
author_sort	Ilesanmi Osasona
title	Characterization and Utilization of Sulphuric Acid and Bitter Leaf Extract Activated Carbon from Rice Husk for Zn(II) Adsorption
title_short	Characterization and Utilization of Sulphuric Acid and Bitter Leaf Extract Activated Carbon from Rice Husk for Zn(II) Adsorption
title_full	Characterization and Utilization of Sulphuric Acid and Bitter Leaf Extract Activated Carbon from Rice Husk for Zn(II) Adsorption
title_fullStr	Characterization and Utilization of Sulphuric Acid and Bitter Leaf Extract Activated Carbon from Rice Husk for Zn(II) Adsorption
title_full_unstemmed	Characterization and Utilization of Sulphuric Acid and Bitter Leaf Extract Activated Carbon from Rice Husk for Zn(II) Adsorption
title_sort	characterization and utilization of sulphuric acid and bitter leaf extract activated carbon from rice husk for zn(ii) adsorption
publisher	Department of Chemistry, Universitas Gadjah Mada
publishDate	2021
url	https://doaj.org/article/eda3a1792e7447b3b3fc109644cd89dc
work_keys_str_mv	AT ilesanmiosasona characterizationandutilizationofsulphuricacidandbitterleafextractactivatedcarbonfromricehuskforzniiadsorption AT ujirobestowkanuhor characterizationandutilizationofsulphuricacidandbitterleafextractactivatedcarbonfromricehuskforzniiadsorption
_version_	1718389604146479104

Characterization and Utilization of Sulphuric Acid and Bitter Leaf Extract Activated Carbon from Rice Husk for Zn(II) Adsorption

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