Abstract
Preparation of organic chelating agents modified bentonite for Cd2+ removal from aqueous solutions
Natural Na-bentonites were modified with an organic chelating agent, citric acid (CA), to prepare a new adsorbent (CA-bentonite) for Cd2+ contaminant removal. The optimal conditions for preparation the CA-bentonite were investigated. Moreover, the CA-bentonite showed significant adsorption for Cd2+ from aqueouss solution. The Langmuir and Freundlich isotherm equations were applied to the data and values of parameters of these isotherm equations were evaluated.
Author(s): Yin-Xia Sun, Xin-Ran Li, Chun-Yu Li, Ya-Yuan Zhao and Zong-Li Ren
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