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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Main Authors: Sri Juari Santosa, Eko Sri Kunarti, Nurul Hidayat Aprilita, Beti Wulandari, Dhian Nuri Bawani
Format: Article
Language:English
Published: Universitas Gadjah Mada 2019-01-01
Series:Indonesian Journal of Chemistry
Subjects:
Online Access:https://jurnal.ugm.ac.id/ijc/article/view/33635
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spelling doaj-a7ef0814ef40458680c19ba5b377219e2020-11-25T02:49:55ZengUniversitas Gadjah MadaIndonesian Journal of Chemistry1411-94202460-15782019-01-0119119821010.22146/ijc.3363522835Sorption Mechanism and Performance of Peat Soil Humin for Methylene Blue and <i>p</i>-NitrophenolSri Juari Santosa0Eko Sri Kunarti1Nurul Hidayat Aprilita2Beti Wulandari3Dhian Nuri Bawani4Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara Kotak Pos Bls. 21, Yogyakarta, IndonesiaDepartment of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara Kotak Pos Bls. 21, Yogyakarta, IndonesiaDepartment of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara Kotak Pos Bls. 21, Yogyakarta, IndonesiaDepartment of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara Kotak Pos Bls. 21, Yogyakarta, IndonesiaDepartment of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara Kotak Pos Bls. 21, Yogyakarta, IndonesiaThe 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.https://jurnal.ugm.ac.id/ijc/article/view/33635sorptionmechanismhuminpeat soilmethylene bluep-nitrophenol
collection DOAJ
language English
format Article
sources DOAJ
author Sri Juari Santosa
Eko Sri Kunarti
Nurul Hidayat Aprilita
Beti Wulandari
Dhian Nuri Bawani
spellingShingle 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
Indonesian Journal of Chemistry
sorption
mechanism
humin
peat soil
methylene blue
p-nitrophenol
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 Universitas Gadjah Mada
series Indonesian Journal of Chemistry
issn 1411-9420
2460-1578
publishDate 2019-01-01
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.
topic sorption
mechanism
humin
peat soil
methylene blue
p-nitrophenol
url https://jurnal.ugm.ac.id/ijc/article/view/33635
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