Preparation and adsorption performance of mesoporous Fe-Ce binary oxide for effective removal of arsenite

Author

Chen Bo ; Zhu Zhi-liang ; Qiu Yan-ling ; Zhao Jian-fu

Author_Institution

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

Volume

2

fYear

2011

fDate

20-22 May 2011

Firstpage

1049

Lastpage

1054

Abstract

A novel mesoporous binary oxide with iron and cerium (MBOIC) was prepared and used as the adsorbent for the removal of arsenite from water solution. Effects of solution pH, adsorbent dosage and arsenite concentration on the adsorption efficiency have been investigated. The results showed that the adsorbent MBOIC had a high removal rate of arsenite in water solution at the pH range of 5~9. The adsorption equilibrium data can be well described by Langmuir isotherm model with R² >; 0.99 and the maximum adsorption capacity was calculated as 104.16 mg/g. The kinetics of adsorption process followed a pseudo-second order equation, and the equilibrium was reached in about 1 h. Aqueous solutions with relatively high ionic strength, hardness or alkalinity did not decrease the removal efficiency of arsenite by MBOIC.

Keywords

adsorption; cerium compounds; hardness; ionic conductivity; iron compounds; materials preparation; mesoporous materials; pH; Fe₂O₃-CeO₂; Langmuir isotherm model; adsorbent dosage; adsorption; alkalinity; aqueous water solution; arsenite concentration; hardness; ionic strength; mesoporous binary oxide; pseudosecond order equation; removal efficiency; solution pH; Fluorescence; Materials; adsorption; arsenite; binary oxide; cerium; iron; mesoporous;

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.2011.5930521

Filename

5930521