标题:Individual and competitive adsorption of Cr(VI) and phosphate onto synthetic Fe-Al hydroxides
作者:Wang, Xin-Hua; Liu, Fei-Fei; Lu, Lei; Yang, Sen; Zhao, Yu; Sun, Lin-Bio; Wang, Shu-Guang
作者机构:[Wang, Xin-Hua; Liu, Fei-Fei; Lu, Lei; Yang, Sen; Zhao, Yu; Wang, Shu-Guang] Shandong Univ, Sch Environm Sci & Engn, Shandong Prov Key Lab Water Pollu 更多
通讯作者:Wang, SG
通讯作者地址:[Wang, SG]Shandong Univ, Sch Environm Sci & Engn, Shandong Prov Key Lab Water Pollut Control & Reso, Jinan 250100, Peoples R China.
来源:COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
出版年:2013
卷:423
页码:42-49
DOI:10.1016/j.colsurfa.2013.01.026
关键词:Fe-Al hydroxides; Cr(VI); P; Adsorption; Individual; Competitive
摘要:Individual and competitive adsorption characteristics of Cr(VI) and phosphate (P) onto synthetic Fe-Al hydroxides were investigated. A series of batch experiments were performed to study the influence of various experimental parameters (pH, ionic strength and contact time) on Cr(VI) and P adsorption. Removal efficiency of Cr(VI) and P decreased with increasing pH and ionic strength. In individual adsorption tests, pseudo-second-order kinetic and Langmuir isotherm models could better describe Cr(VI) and P adsorption on Fe-Al hydroxides. In competitive adsorption experiments, Cr(VI) adsorption was suppressed obviously by P and followed Freundlich isotherm model, revealing that the competitive adsorption of Cr(VI) in the presence of P was heterogeneous. Cr(VI) had no significant influence on P adsorption and the competitive adsorption of P agreed well with Langmuir isotherm model, suggesting that the competitive affinity of P towards the adsorption sites on Fe-Al hydroxides was stronger than that of Cr(VI). The presence of P reduced the adsorption amount of Cr(VI), but the presence of Cr(VI) decreased the adsorption rate of P. (C) 2013 Elsevier B.V. All rights reserved.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:24
Scopus被引频次:31
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874420227&doi=10.1016%2fj.colsurfa.2013.01.026&partnerID=40&md5=69541f17ad51f741b7847c31c532cd84
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