Title :
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
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;
Conference_Titel :
Materials for Renewable Energy & Environment (ICMREE), 2011 International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-61284-749-8
DOI :
10.1109/ICMREE.2011.5930521
