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Optimization of As(V) adsorption on Fe-RH-MCM-41-immobilized GAC using Box-Behnken Design: Effects of pH, loadings, and initial concentrations

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dc.contributor.authorWantala K.
dc.contributor.authorKhongkasem E.
dc.contributor.authorKhlongkarnpanich N.
dc.contributor.authorSthiannopkao S.
dc.contributor.authorKim K.-W.
dc.date.accessioned2021-04-05T03:34:19Z
dc.date.available2021-04-05T03:34:19Z
dc.date.issued2012
dc.date.issuedBE2555
dc.description.abstractThis work focused on the removal from water of arsenate in the 100 to 500. μg/L range using Fe-RH-MCM-41 immobilized on GAC by a colloidal impregnation method. A Response Surface Method (RSM) based on the Box-Behnken Design (BBD) was used to evaluate the effects of pH, adsorbent loading, and initial arsenate concentrations. The thermal stability of Fe-RH-MCM-41/GAC was greater than 460. °C because Fe-RH-MCM-41 and epoxy resin covered the GAC, preventing GAC weight loss. The rate and capacity for arsenate adsorption on Fe-RH-MCM-41/GAC were higher than for GAC. The effects of pH, adsorbent loading, and initial arsenate concentration showed significant effects on efficiency, in terms of percent arsenate removal. Significant interaction occurred as positive effects between arsenate and arsenate concentrations, and pH and arsenate concentrations, and as negative effects between pH and pH, adsorbent loading and adsorbent loading, and adsorbent loading and arsenate concentrations. © 2011 Elsevier Ltd.
dc.format.mimetypeapplication/pdf
dc.identifier.citationApplied Geochemistry. Vol 27, No.5 (2012), p.1027-1034
dc.identifier.doi10.1016/j.apgeochem.2011.11.014
dc.identifier.issn8832927
dc.identifier.other2-s2.0-84859013610
dc.identifier.urihttps://hdl.handle.net/20.500.14740/7069
dc.rights.holderScopus
dc.subject.otherArsenate adsorption
dc.subject.otherArsenate removal
dc.subject.otherBox-Behnken design
dc.subject.otherColloidal impregnation
dc.subject.otherInitial concentration
dc.subject.otherResponse surface method
dc.subject.otherWeight loss
dc.subject.otherAdsorption
dc.subject.otherEpoxy resins
dc.subject.otherLoading
dc.subject.otherWater treatment
dc.subject.otherPH effects
dc.subject.otherAdsorption
dc.subject.otherArsenic
dc.subject.otherConcentration (composition)
dc.subject.otherDesign
dc.subject.otherImmobilization
dc.subject.otherOptimization
dc.subject.otherPH
dc.subject.otherPollutant removal
dc.subject.otherResin
dc.titleOptimization of As(V) adsorption on Fe-RH-MCM-41-immobilized GAC using Box-Behnken Design: Effects of pH, loadings, and initial concentrations
dc.typeArticle
dspace.entity.typePublication
swu.datasource.scopushttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84859013610&doi=10.1016%2fj.apgeochem.2011.11.014&partnerID=40&md5=60907879a71a3b1192a37678fa9169c0

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