As(V) removal from aqueous solution using a low-cost adsorbent coir pith ash: Equilibrium and kinetic study

Bahar, MM; Mahbub, KR; Naidu, R; Megharaj, M

As(V) removal from aqueous solution using a low-cost adsorbent coir pith ash: Equilibrium and kinetic study

Bahar, MM Mahbub, KR

Naidu, R Megharaj, M

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Publication Type:: Journal Article
Citation:: Environmental Technology and Innovation, 2018, 9 pp. 198 - 209
Issue Date:: 2018-02-01

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Field	Value	Language
dc.contributor.author	Bahar, MM	en_US
dc.contributor.author	Mahbub, KR https://orcid.org/0000-0001-7086-9965	en_US
dc.contributor.author	Naidu, R	en_US
dc.contributor.author	Megharaj, M	en_US
dc.date.issued	2018-02-01	en_US
dc.identifier.citation	Environmental Technology and Innovation, 2018, 9 pp. 198 - 209	en_US
dc.identifier.uri	http://hdl.handle.net/10453/123593
dc.description.abstract	© 2017 Elsevier B.V. In this study, the adsorptive removal of As(V) from aqueous solution by using a low-cost adsorbent coir pith ash (CPA) was analysed in a batch system. The adsorption capacity of CPA was investigated under different process parameters, these being pH, adsorbent dose, initial As(V) concentration and contact time. The CPA was found to adsorb As(V) over the initial solution pH range of 2–12, and the best adsorbent dose was 5 g/L. Adsorption kinetics data were best fitted to the pseudo-second-order kinetic model. The Langmuir and Dubinin–Radushkevich (D–R) isotherms represented the adsorption equilibrium data very well. The maximum adsorption capacity was 36.5 mg/g as per Langmuir isotherm at room temperature (25 °C). The mean free energy (8.64 kJ/mol) obtained from the D–R isotherm model revealed that the type of adsorption depends on the ion-exchange mechanism. The results showed that adsorbent CPA has great potential for removing As(V) from contaminated water.	en_US
dc.relation.ispartof	Environmental Technology and Innovation	en_US
dc.relation.isbasedon	10.1016/j.eti.2017.12.005	en_US
dc.title	As(V) removal from aqueous solution using a low-cost adsorbent coir pith ash: Equilibrium and kinetic study	en_US
dc.type	Journal Article
utslib.citation.volume	9	en_US
utslib.for	0502 Environmental Science and Management	en_US
utslib.for	0907 Environmental Engineering	en_US
utslib.for	1002 Environmental Biotechnology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	9	en_US

Abstract:

© 2017 Elsevier B.V. In this study, the adsorptive removal of As(V) from aqueous solution by using a low-cost adsorbent coir pith ash (CPA) was analysed in a batch system. The adsorption capacity of CPA was investigated under different process parameters, these being pH, adsorbent dose, initial As(V) concentration and contact time. The CPA was found to adsorb As(V) over the initial solution pH range of 2–12, and the best adsorbent dose was 5 g/L. Adsorption kinetics data were best fitted to the pseudo-second-order kinetic model. The Langmuir and Dubinin–Radushkevich (D–R) isotherms represented the adsorption equilibrium data very well. The maximum adsorption capacity was 36.5 mg/g as per Langmuir isotherm at room temperature (25 °C). The mean free energy (8.64 kJ/mol) obtained from the D–R isotherm model revealed that the type of adsorption depends on the ion-exchange mechanism. The results showed that adsorbent CPA has great potential for removing As(V) from contaminated water.

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http://hdl.handle.net/10453/123593