Desalination and Water Treatment, ( ISI ), Volume (57), No (1), Year (2016-5) , Pages (18694-18709)

Title : ( A detailed study on adsorption isotherms of Hg(II) removal from aqueous solutions using nanostructured sorbent ZnCl2-MCM-41 )

Authors: Foad Raji , Majid Pakizeh , Alireza Saraeian , Mojtaba Raji ,

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A comparison between linear and non-linear regression methods to determine the optimum isotherm was done by applying these models to the experimental equilibrium data of Hg(II) sorption using new nanostructured sorbent ZnCl2–MCM-41. The best-fitting linear isotherm was selected based on the highest R2 value obtained. In the case of non-linear methods, different error functions were employed to determine the best-fitting model. Langmuir isotherm was found to be the best-fitting model in both linear and non-linear cases, which implies a monolayer adsorption of Hg(II) onto a homogeneous surface of ZnCl2–MCM-41. Scanning electron microscopic images verified the spherical morphology of the sorbent particles. The adsorption capacities of Hg(II) onto CaCl2–MCM-41, CuCl2–MCM-41, and MgCl2–MCM-41 were demonstrated to be less than those of ZnCl2–MCM-41. Lastly, Hg(II) recovery of up to 75% was obtained by utilizing 0.1 M HNO3 solution.

Keywords

, Nanostructured sorbent; ZnCl2, MCM, 41; Hg(II) removal; Non, linear regression; Isotherm; Adsorption
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@article{paperid:1056750,
author = {Raji, Foad and Pakizeh, Majid and Alireza Saraeian and Mojtaba Raji},
title = {A detailed study on adsorption isotherms of Hg(II) removal from aqueous solutions using nanostructured sorbent ZnCl2-MCM-41},
journal = {Desalination and Water Treatment},
year = {2016},
volume = {57},
number = {1},
month = {May},
issn = {1944-3994},
pages = {18694--18709},
numpages = {15},
keywords = {Nanostructured sorbent; ZnCl2-MCM-41; Hg(II) removal; Non-linear regression; Isotherm; Adsorption capacity},
}

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%0 Journal Article
%T A detailed study on adsorption isotherms of Hg(II) removal from aqueous solutions using nanostructured sorbent ZnCl2-MCM-41
%A Raji, Foad
%A Pakizeh, Majid
%A Alireza Saraeian
%A Mojtaba Raji
%J Desalination and Water Treatment
%@ 1944-3994
%D 2016

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