Adsorption of arsenite on synthetic composite adsorbent with Mg-Al-La-Ce oxides

Author

Guo Yan-wei ; Zhu Zhi-liang ; Qiu Yan-ling ; Zhao Jian-fu

Author_Institution

State Key Lab. of Pollution Control & Resource Reuse, Tongji Univ., Shanghai, China

Volume

1

fYear

2011

fDate

20-22 May 2011

Firstpage

968

Lastpage

972

Abstract

A novel composite adsorbent with Mg, Al, La and Ce oxides was synthesized and used for the removal of arsenite from water solution. The adsorption behavior of arsenite followed the Langmuir adsorption isotherm with a maximum adsorption capacity of 29.7mg/g. The kinetics study showed that anion adsorption process was fast and apparently attained a steady state in 8h. The effect of different pH and coexisting ions have been investigated. The results showed that the solution pH has no obvious effect on the adsorption efficiency in the pH range of 3~10. No significant effects were found on the adsorption of arsenite by addition of the coexisting ions including Cl^-, SO₄^2- and NO₃^-, but not the anion of PO₄^3-.

Keywords

adsorption; aluminium compounds; arsenic compounds; cerium compounds; chemical technology; lanthanum compounds; magnesium compounds; pH; toxicology; water treatment; AlO₂; CeO₂; LaO₂; Langmuir adsorption isotherm; Mg-Al-La-Ce oxides; MgO₂; anion adsorption process; arsenite; kinetics study; pH effect; synthetic composite adsorbent; Chemicals; Ink; Manganese; Mg-Al-La-Ce oxides; adsorption; arsenite; composite adsorbent;

fLanguage

English

Publisher

ieee

Conference_Titel

Materials for Renewable Energy & Environment (ICMREE), 2011 International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-61284-749-8

Type

conf

DOI

10.1109/ICMREE.2011.5930963

Filename

5930963