Adsorption of Hexavalent Chromium and phenol onto Bentonite Modified With HexaDecylTriMethylAmmonium Bromide (HDTMABr)

JOURNAL OF ADVANCES IN CHEMISTRY

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Title Adsorption of Hexavalent Chromium and phenol onto Bentonite Modified With HexaDecylTriMethylAmmonium Bromide (HDTMABr)
 
Creator Slimani, My. S.
Ahlafi, H.
Moussout, H.
Boukhlifi, F.
Zegaoui, O.
 
Subject Physical Chemistry
Bentonite; Organoclays; Hexavalent chromium; phenol; Adsorption; Hexadecyltrimethylammoniumbromide.
 
Description The efficiencies of Hexadecyltrimethylammonium bromide (HDTMABr) modified bentonite (HDTMABt) for phenol and chromium removal from aqueous solutions were studied in batch experiments at pH = 9 and pH = 2 values, respectively. FTIR, SEM, XRD and BET analyses indicated that the HDTMABr molecules were intercalated in the interlayer and at the external surface of initially Na-bentonite (NaBt). Adsorption experiments showed that the HDTMABt was more efficient than the initial NaBt for the removal of phenol and chromium, simultaneously, the extent of the enhancement differed among these pollutants depending on their affinity towards these samples. The kinetic study revealed a rapid adsorption onto HDTMABt of the pollutants during the initial stage (teq < 1h). The pseudo-second-order equation fitted well to the experimental data. Phenol adsorption on NaBt and HDTMABt could be described by a linear Freundlich equation while Langmuir and Freundlich models were the most suitable for Cr(VI) adsorption on both samples. 
 
Publisher CIRWORLD
 
Date 2012-12-20
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
adsorption
 
Format application/pdf
 
Identifier http://cirworld.com/index.php/jac/article/view/4041
 
Source JOURNAL OF ADVANCES IN CHEMISTRY; Vol 8 No 2; 1602-1611
2321-807X
 
Language eng
 
Relation http://cirworld.com/index.php/jac/article/view/4041/3938
 
Rights Copyright (c) 2014 Journal of Advances in Chemistry
http://creativecommons.org/licenses/by/4.0
 

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