Kinetics, isotherms, and thermodynamic studies on the adsorption of mercury (ii) ion from aqueous solution using modified palm oil fuel ash

Palm oil fuel ash (POFA) is a waste material generated from the boiler due to the burning of palm oil biomass e.g. kernel shell and fiber as fuel to generate electricity. The present research focused on the study of adsorption isotherms, kinetics and thermodynamic properties on the removal of mercur...

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Main Authors:	Imla Syafiqah, Mohd Salleh, Wan Mohd Hafizuddin, Wan Yussof
Format:	Article
Language:	English
Published:	Elsevier Ltd 2018
Subjects:	TD Environmental technology. Sanitary engineering
Online Access:	http://umpir.ump.edu.my/id/eprint/24022/ http://umpir.ump.edu.my/id/eprint/24022/ http://umpir.ump.edu.my/id/eprint/24022/ http://umpir.ump.edu.my/id/eprint/24022/1/23-Imla%20-%20MT_2018.pdf

id	ump-24022
recordtype	eprints
spelling	ump-240222019-01-30T04:57:44Z http://umpir.ump.edu.my/id/eprint/24022/ Kinetics, isotherms, and thermodynamic studies on the adsorption of mercury (ii) ion from aqueous solution using modified palm oil fuel ash Imla Syafiqah, Mohd Salleh Wan Mohd Hafizuddin, Wan Yussof TD Environmental technology. Sanitary engineering Palm oil fuel ash (POFA) is a waste material generated from the boiler due to the burning of palm oil biomass e.g. kernel shell and fiber as fuel to generate electricity. The present research focused on the study of adsorption isotherms, kinetics and thermodynamic properties on the removal of mercury (II) ion onto POFA. The prepared POFA was characterized by FTIR, TGA and BET analysis. The equilibrium data at various concentrations were analyzed by Langmuir and Freundlich isotherms models. From this present study, the maximum adsorption capacity obtained from the Freundlich isotherm was 0.99 mg/g. A kinetic study was carried out with pseudo first order and pseudo second order reaction equations. It was found that the mercury (II) ion uptake process followed the pseudo second order rate expression. Thermodynamic parameters of the Gibbs free energy (ΔG°), enthalpy (ΔH°), and entropy (ΔS°) were also determined. The negative Gibbs free energy change (-788.90 kJ/mol) and the positive enthalpy change (73,680.33 kJ/mol) indicated that adsorption was spontaneous process and endothermic nature. Overall, POFA looks to be a promising adsorbent for removal of mercury (II) ion from aqueous solutions due to its high performance and availability at low cost. Elsevier Ltd 2018 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/24022/1/23-Imla%20-%20MT_2018.pdf Imla Syafiqah, Mohd Salleh and Wan Mohd Hafizuddin, Wan Yussof (2018) Kinetics, isotherms, and thermodynamic studies on the adsorption of mercury (ii) ion from aqueous solution using modified palm oil fuel ash. Materials Today: Proceedings, 5 (10). pp. 21690-21697. ISSN 2214-7853 https://doi.org/10.1016/j.matpr.2018.07.020 https://doi.org/10.1016/j.matpr.2018.07.020
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TD Environmental technology. Sanitary engineering
spellingShingle	TD Environmental technology. Sanitary engineering Imla Syafiqah, Mohd Salleh Wan Mohd Hafizuddin, Wan Yussof Kinetics, isotherms, and thermodynamic studies on the adsorption of mercury (ii) ion from aqueous solution using modified palm oil fuel ash
description	Palm oil fuel ash (POFA) is a waste material generated from the boiler due to the burning of palm oil biomass e.g. kernel shell and fiber as fuel to generate electricity. The present research focused on the study of adsorption isotherms, kinetics and thermodynamic properties on the removal of mercury (II) ion onto POFA. The prepared POFA was characterized by FTIR, TGA and BET analysis. The equilibrium data at various concentrations were analyzed by Langmuir and Freundlich isotherms models. From this present study, the maximum adsorption capacity obtained from the Freundlich isotherm was 0.99 mg/g. A kinetic study was carried out with pseudo first order and pseudo second order reaction equations. It was found that the mercury (II) ion uptake process followed the pseudo second order rate expression. Thermodynamic parameters of the Gibbs free energy (ΔG°), enthalpy (ΔH°), and entropy (ΔS°) were also determined. The negative Gibbs free energy change (-788.90 kJ/mol) and the positive enthalpy change (73,680.33 kJ/mol) indicated that adsorption was spontaneous process and endothermic nature. Overall, POFA looks to be a promising adsorbent for removal of mercury (II) ion from aqueous solutions due to its high performance and availability at low cost.
format	Article
author	Imla Syafiqah, Mohd Salleh Wan Mohd Hafizuddin, Wan Yussof
author_facet	Imla Syafiqah, Mohd Salleh Wan Mohd Hafizuddin, Wan Yussof
author_sort	Imla Syafiqah, Mohd Salleh
title	Kinetics, isotherms, and thermodynamic studies on the adsorption of mercury (ii) ion from aqueous solution using modified palm oil fuel ash
title_short	Kinetics, isotherms, and thermodynamic studies on the adsorption of mercury (ii) ion from aqueous solution using modified palm oil fuel ash
title_full	Kinetics, isotherms, and thermodynamic studies on the adsorption of mercury (ii) ion from aqueous solution using modified palm oil fuel ash
title_fullStr	Kinetics, isotherms, and thermodynamic studies on the adsorption of mercury (ii) ion from aqueous solution using modified palm oil fuel ash
title_full_unstemmed	Kinetics, isotherms, and thermodynamic studies on the adsorption of mercury (ii) ion from aqueous solution using modified palm oil fuel ash
title_sort	kinetics, isotherms, and thermodynamic studies on the adsorption of mercury (ii) ion from aqueous solution using modified palm oil fuel ash
publisher	Elsevier Ltd
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/24022/ http://umpir.ump.edu.my/id/eprint/24022/ http://umpir.ump.edu.my/id/eprint/24022/ http://umpir.ump.edu.my/id/eprint/24022/1/23-Imla%20-%20MT_2018.pdf
first_indexed	2023-09-18T22:36:11Z
last_indexed	2023-09-18T22:36:11Z
_version_	1777416610532818944

Kinetics, isotherms, and thermodynamic studies on the adsorption of mercury (ii) ion from aqueous solution using modified palm oil fuel ash

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