Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/14346
ชื่อเรื่อง: Optimization of As(V) adsorption on Fe-RH-MCM-41-immobilized GAC using Box-Behnken Design: Effects of pH, loadings, and initial concentrations
ผู้แต่ง: Wantala K.
Khongkasem E.
Khlongkarnpanich N.
Sthiannopkao S.
Kim K.-W.
Keywords: Arsenate adsorption
Arsenate removal
Box-Behnken design
Colloidal impregnation
Initial concentration
Response surface method
Weight loss
Adsorption
Epoxy resins
Loading
Water treatment
pH effects
adsorption
arsenic
concentration (composition)
design
immobilization
optimization
pH
pollutant removal
resin
วันที่เผยแพร่: 2012
บทคัดย่อ: This 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.
URI: https://ir.swu.ac.th/jspui/handle/123456789/14346
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84859013610&doi=10.1016%2fj.apgeochem.2011.11.014&partnerID=40&md5=60907879a71a3b1192a37678fa9169c0
ISSN: 8832927
Appears in Collections:Scopus 1983-2021

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