Sorption Mechanism and Performance of Peat Soil Humin for Methylene Blue and <i>p</i>-Nitrophenol

The responsible mechanism and performance of peat soil humin for the sorption of methylene blue (MB) and p-nitrophenol (p-NP) have been investigated. Humin was obtained from peat soil of Siantan, West Kalimantan, Indonesia, after removing the content of humic and fulvic acids into a NaOH solution us...

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Autores principales:	Sri Juari Santosa, Eko Sri Kunarti, Nurul Hidayat Aprilita, Beti Wulandari, Dhian Nuri Bawani
Formato:	article
Lenguaje:	EN
Publicado:	Department of Chemistry, Universitas Gadjah Mada 2019
Materias:	sorption mechanism humin peat soil methylene blue p-nitrophenol Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/a7ef0814ef40458680c19ba5b377219e
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spelling	oai:doaj.org-article:a7ef0814ef40458680c19ba5b377219e2021-12-02T11:45:19ZSorption Mechanism and Performance of Peat Soil Humin for Methylene Blue and <i>p</i>-Nitrophenol1411-94202460-157810.22146/ijc.33635https://doaj.org/article/a7ef0814ef40458680c19ba5b377219e2019-01-01T00:00:00Zhttps://jurnal.ugm.ac.id/ijc/article/view/33635https://doaj.org/toc/1411-9420https://doaj.org/toc/2460-1578The responsible mechanism and performance of peat soil humin for the sorption of methylene blue (MB) and p-nitrophenol (p-NP) have been investigated. Humin was obtained from peat soil of Siantan, West Kalimantan, Indonesia, after removing the content of humic and fulvic acids into a NaOH solution using the recommended procedure of International Humic Substances Society (IHSS). The obtained humin was then purified by rigorous stirring in a mixed solution of HCl 0.1 M and HF 0.3 M. Ash content in humin after the purification abruptly decreased from 36.84 to 1.26 wt.% indicating that minerals and other inorganic impurities were mostly removed. Phenolic –OH and carboxyl (–COOH) functional groups contributing to the acidity of humin were in the level of 3.44 and 2.10 mmol/g, respectively. At optimum medium pH of 6.20 for MB and 7.00 for p-NP, –COO– as the deprotonated product of –COOH was the most responsible active site in sorbing MB and p-NP through electrostatic interaction and hydrogen bonding, respectively. The homogeneity of –COO– as the active site for the sorption of MB and p-NP implied that the surface of humin sorbent was energetically uniform and thereby the sorption of both MB and p-NP followed better the Langmuir than the Freundlich isotherm model with sorption capacity of 0.19 and 0.26 mmol/g and sorption energy of 32.92 and 27.27 kJ/mol, respectively.Sri Juari SantosaEko Sri KunartiNurul Hidayat AprilitaBeti WulandariDhian Nuri BawaniDepartment of Chemistry, Universitas Gadjah Madaarticlesorptionmechanismhuminpeat soilmethylene bluep-nitrophenolChemistryQD1-999ENIndonesian Journal of Chemistry, Vol 19, Iss 1, Pp 198-210 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	sorption mechanism humin peat soil methylene blue p-nitrophenol Chemistry QD1-999
spellingShingle	sorption mechanism humin peat soil methylene blue p-nitrophenol Chemistry QD1-999 Sri Juari Santosa Eko Sri Kunarti Nurul Hidayat Aprilita Beti Wulandari Dhian Nuri Bawani Sorption Mechanism and Performance of Peat Soil Humin for Methylene Blue and <i>p</i>-Nitrophenol
description	The responsible mechanism and performance of peat soil humin for the sorption of methylene blue (MB) and p-nitrophenol (p-NP) have been investigated. Humin was obtained from peat soil of Siantan, West Kalimantan, Indonesia, after removing the content of humic and fulvic acids into a NaOH solution using the recommended procedure of International Humic Substances Society (IHSS). The obtained humin was then purified by rigorous stirring in a mixed solution of HCl 0.1 M and HF 0.3 M. Ash content in humin after the purification abruptly decreased from 36.84 to 1.26 wt.% indicating that minerals and other inorganic impurities were mostly removed. Phenolic –OH and carboxyl (–COOH) functional groups contributing to the acidity of humin were in the level of 3.44 and 2.10 mmol/g, respectively. At optimum medium pH of 6.20 for MB and 7.00 for p-NP, –COO– as the deprotonated product of –COOH was the most responsible active site in sorbing MB and p-NP through electrostatic interaction and hydrogen bonding, respectively. The homogeneity of –COO– as the active site for the sorption of MB and p-NP implied that the surface of humin sorbent was energetically uniform and thereby the sorption of both MB and p-NP followed better the Langmuir than the Freundlich isotherm model with sorption capacity of 0.19 and 0.26 mmol/g and sorption energy of 32.92 and 27.27 kJ/mol, respectively.
format	article
author	Sri Juari Santosa Eko Sri Kunarti Nurul Hidayat Aprilita Beti Wulandari Dhian Nuri Bawani
author_facet	Sri Juari Santosa Eko Sri Kunarti Nurul Hidayat Aprilita Beti Wulandari Dhian Nuri Bawani
author_sort	Sri Juari Santosa
title	Sorption Mechanism and Performance of Peat Soil Humin for Methylene Blue and <i>p</i>-Nitrophenol
title_short	Sorption Mechanism and Performance of Peat Soil Humin for Methylene Blue and <i>p</i>-Nitrophenol
title_full	Sorption Mechanism and Performance of Peat Soil Humin for Methylene Blue and <i>p</i>-Nitrophenol
title_fullStr	Sorption Mechanism and Performance of Peat Soil Humin for Methylene Blue and <i>p</i>-Nitrophenol
title_full_unstemmed	Sorption Mechanism and Performance of Peat Soil Humin for Methylene Blue and <i>p</i>-Nitrophenol
title_sort	sorption mechanism and performance of peat soil humin for methylene blue and <i>p</i>-nitrophenol
publisher	Department of Chemistry, Universitas Gadjah Mada
publishDate	2019
url	https://doaj.org/article/a7ef0814ef40458680c19ba5b377219e
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Sorption Mechanism and Performance of Peat Soil Humin for Methylene Blue and <i>p</i>-Nitrophenol

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