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Simultaneous Removal of Heavy Metals from Wastewater Using Modified Sodium Montmorillonite Nanoclay.

作者信息

Kahkha Mohammad Reza Rezaei, Kaykhaii Massoud, Kahkha Batool Rezaei, Khosravi Hamed, Tohidlou Esmaeil

机构信息

Department of Environmental Health Engineering, Zabol University of Medical Sciences, Zabol, Iran.

Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan, Iran.

出版信息

Anal Sci. 2020 Sep 10;36(9):1039-1043. doi: 10.2116/analsci.19P300. Epub 2020 Feb 28.

DOI:10.2116/analsci.19P300
PMID:32115461
Abstract

Sodium montmorillonite nanoclay particles were modified by 3-aminopropyltrimetoxysilane using a physical vapor deposition method and applied for the simultaneous removal of Cd, Zn, Pb and Ni heavy metals from wastewater samples. Experiments were performed in both batch and column systems. Several parameters that influence the removal efficiency, such as the pH, contact time, amount of adsorbent, interfering ions, flow rate of sample passage and eluent solvent, were evaluated and optimized. The results showed that the adsorption isotherms obeyed Langmuir isotherms for all heavy metals. Also, interfering ions did not influenced the removal efficiency. Finally, modified nanoclay successfully could remove all heavy metals from real wastewater samples to near completeness.

摘要

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