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

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4 Author(s)
Chen Bo ; State Key Lab. of Pollution Control & Resource Reuse, Tongji Univ., Shanghai, China ; Zhu Zhi-liang ; Qiu Yan-ling ; Zhao Jian-fu

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.

Published in:

Materials for Renewable Energy & Environment (ICMREE), 2011 International Conference on  (Volume:2 )

Date of Conference:

20-22 May 2011