relation: https://khub.utp.edu.my/scholars/13474/
title: Arsenic adsorption mechanism on palm oil fuel ash (POFA) powder suspension
creator: Yusof, M.S.M.
creator: Othman, M.H.D.
creator: Wahab, R.A.
creator: Jumbri, K.
creator: Razak, F.I.A.
creator: Kurniawan, T.A.
creator: Abu Samah, R.
creator: Mustafa, A.
creator: Rahman, M.A.
creator: Jaafar, J.
creator: Ismail, A.F.
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 μm particle size was employed at pH 3 with the highest calcination temperature at 1150 °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. © 2019 Elsevier B.V.
publisher: Elsevier B.V.
date: 2020
type: Article
type: PeerReviewed
identifier:   Yusof, M.S.M. and Othman, M.H.D. and Wahab, R.A. and Jumbri, K. and Razak, 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.   ISSN 03043894     
relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85072572130&doi=10.1016%2fj.jhazmat.2019.121214&partnerID=40&md5=bc35fca3a4e40e67d4c0cb3ff4a53bcd
relation: 10.1016/j.jhazmat.2019.121214
identifier: 10.1016/j.jhazmat.2019.121214