Study on chromium (VI) removal from aqueous solution using Fe-Mn bimetal oxide

Author

Xu, Ke ; Li, Chunguang ; Liu, Juntan ; Peng, Weigong

Author_Institution

Dept. of Civil & Constr. Eng., Zhengzhou Inst. of Aeronaut. Ind. Manage., Zhengzhou, China

fYear

2011

fDate

22-24 April 2011

Firstpage

1569

Lastpage

1572

Abstract

In this work the Fe-Mn bimetal oxide was synthesized and was used for the removal of chromium. It was found that the effective pH for adsorption of chromium was in the range of 5.0 to 7.0, and the removal percentage of chromium reached maximum at pH 6.0. The kinetic study showed that the adsorption of chromium was well described by pseudo-second-order model. The removal efficiency of chromium increased with the increase of adsorbent dosage and the decrease of the initial concentration. In the range of 20°C to 60°C, temperature did not significantly affect the adsorption of chromium. The chromium adsorption isotherm data fit well to the Freundlich equation, the Freundlich constant K_f was 3.85 and 1/n was 0.363.

Keywords

adsorption; chemical engineering; chromium; pH; separation; Freundlich equation; aqueous solution; chromium adsorption; chromium removal; ferromanganese bimetal oxide; pseudo second order model; temperature 20 degC to 60 degC; Chromium; Equations; Ions; Kinetic theory; Materials; Mathematical model; Adsorption; Chromium; Fe-Mn bimetal oxide; Removal;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on

Conference_Location

Lushan

Print_ISBN

978-1-4577-0289-1

Type

conf

DOI

10.1109/ICETCE.2011.5776172

Filename

5776172