Arsenic adsorption mechanism on palm oil fuel ash (POFA) powder suspension
The contribution of palm oil fuel ash (POFA), an agricultural waste as a low cost adsorbent for the removal of arsenite (As(III)) and arsenate (As(V)) was explored. Investigation on the adsorbency characteristics of POFA suspension revealed that the surface area, particle size, composition, and crys...
Saved in:
Main Authors: | , , , , , , , , , , |
---|---|
Format: | Article |
Published: |
Elsevier Ltd.
2020
|
Subjects: | |
Online Access: | http://eprints.utm.my/id/eprint/86284/ https://dx.doi.org/10.1016/j.jhazmat.2019.121214 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my.utm.86284 |
---|---|
record_format |
eprints |
spelling |
my.utm.862842021-02-23T09:04:30Z http://eprints.utm.my/id/eprint/86284/ Arsenic adsorption mechanism on palm oil fuel ash (POFA) powder suspension Yusof, M. S. M. Othman, M. H. D. Wahab, R. A. Jumbri, K. Razakb, F. I. A. Kurniawan, T. A. Abu Samah, R. Mustafa, A. Rahman, M. A. Jaafar, J. Ismail, A. F. TP Chemical technology The contribution of palm oil fuel ash (POFA), an agricultural waste as a low cost adsorbent for the removal of arsenite (As(III)) and arsenate (As(V)) was explored. Investigation on the adsorbency characteristics of POFA suspension revealed that the surface area, particle size, composition, and crystallinity of the SiO2 rich mullite structure were the crucial factors in ensuring a high adsorption capacity of the ions. Maximum adsorption capacities of As(III) and As(V) at 91.2 and 99.4 mg g(-1), respectively, were obtained when POFA of 30 mu m particle size was employed at pH 3 with the highest calcination temperature at 1150 degrees C. An optimum dosage of 1.0 g of dried POFA powder successfully removed 48.7% and 50.2% of As(III) and As(V), respectively. Molecular modeling using the density functional theory consequently identified the energy for the proposed reaction routes between the SiO- and As+ species. The high stability of the POFA suspension in water in conjunction with good adsorption capacity of As(III) and As(V) seen in this study, thus envisages its feasibility as a potential alternative absorbent for the remediation of water polluted with heavy metals. Elsevier Ltd. 2020-02 Article PeerReviewed Yusof, M. S. M. and Othman, M. H. D. and Wahab, R. A. and Jumbri, K. and Razakb, F. I. A. and Kurniawan, T. A. and Abu Samah, R. and Mustafa, A. and Rahman, M. A. and Jaafar, J. and Ismail, A. F. (2020) Arsenic adsorption mechanism on palm oil fuel ash (POFA) powder suspension. Journal Of Hazardous Materials, 383 . https://dx.doi.org/10.1016/j.jhazmat.2019.121214 DOI:10.1016/j.jhazmat.2019.121214 |
institution |
Universiti Teknologi Malaysia |
building |
UTM Library |
collection |
Institutional Repository |
continent |
Asia |
country |
Malaysia |
content_provider |
Universiti Teknologi Malaysia |
content_source |
UTM Institutional Repository |
url_provider |
http://eprints.utm.my/ |
topic |
TP Chemical technology |
spellingShingle |
TP Chemical technology Yusof, M. S. M. Othman, M. H. D. Wahab, R. A. Jumbri, K. Razakb, F. I. A. Kurniawan, T. A. Abu Samah, R. Mustafa, A. Rahman, M. A. Jaafar, J. Ismail, A. F. Arsenic adsorption mechanism on palm oil fuel ash (POFA) powder suspension |
description |
The contribution of palm oil fuel ash (POFA), an agricultural waste as a low cost adsorbent for the removal of arsenite (As(III)) and arsenate (As(V)) was explored. Investigation on the adsorbency characteristics of POFA suspension revealed that the surface area, particle size, composition, and crystallinity of the SiO2 rich mullite structure were the crucial factors in ensuring a high adsorption capacity of the ions. Maximum adsorption capacities of As(III) and As(V) at 91.2 and 99.4 mg g(-1), respectively, were obtained when POFA of 30 mu m particle size was employed at pH 3 with the highest calcination temperature at 1150 degrees C. An optimum dosage of 1.0 g of dried POFA powder successfully removed 48.7% and 50.2% of As(III) and As(V), respectively. Molecular modeling using the density functional theory consequently identified the energy for the proposed reaction routes between the SiO- and As+ species. The high stability of the POFA suspension in water in conjunction with good adsorption capacity of As(III) and As(V) seen in this study, thus envisages its feasibility as a potential alternative absorbent for the remediation of water polluted with heavy metals. |
format |
Article |
author |
Yusof, M. S. M. Othman, M. H. D. Wahab, R. A. Jumbri, K. Razakb, F. I. A. Kurniawan, T. A. Abu Samah, R. Mustafa, A. Rahman, M. A. Jaafar, J. Ismail, A. F. |
author_facet |
Yusof, M. S. M. Othman, M. H. D. Wahab, R. A. Jumbri, K. Razakb, F. I. A. Kurniawan, T. A. Abu Samah, R. Mustafa, A. Rahman, M. A. Jaafar, J. Ismail, A. F. |
author_sort |
Yusof, M. S. M. |
title |
Arsenic adsorption mechanism on palm oil fuel ash (POFA) powder suspension |
title_short |
Arsenic adsorption mechanism on palm oil fuel ash (POFA) powder suspension |
title_full |
Arsenic adsorption mechanism on palm oil fuel ash (POFA) powder suspension |
title_fullStr |
Arsenic adsorption mechanism on palm oil fuel ash (POFA) powder suspension |
title_full_unstemmed |
Arsenic adsorption mechanism on palm oil fuel ash (POFA) powder suspension |
title_sort |
arsenic adsorption mechanism on palm oil fuel ash (pofa) powder suspension |
publisher |
Elsevier Ltd. |
publishDate |
2020 |
url |
http://eprints.utm.my/id/eprint/86284/ https://dx.doi.org/10.1016/j.jhazmat.2019.121214 |
_version_ |
1693725933576388608 |
score |
13.160551 |