Adsorption of Nickel Ion by Zeolite-Attapulgite Composite Nano-Size Adsorbent

Author

Wang Zheng ; Zhang Lin-sheng ; Jing Zhao-qian

Author_Institution

Dept. of Environ. Sci. & Eng., Southeast Univ., Nanjing, China

fYear

2009

fDate

11-13 June 2009

Firstpage

1

Lastpage

4

Abstract

The removal of Ni(II) from aqueous solution by batch adsorption technique using a zeolite-attapulgite composite nano-size adsorbent was investigated. After elementary characterization of this adsorbent, the influence of adsorbent concentration, initial Ni(II) concentration, pH, contact time and temperature on the selectivity and sensitivity of the removal process were investigated. Results showed that this absorbent was indeed nanoporous. Increase in adsorbent dosage led to increase in Ni(II) adsorption due to increased number of adsorption sites. Langmuir model fitted the experimental data better than Freundlich model. Adsorption process was found to be highly pH dependent. The optimum pH range for adsorption of Ni(II) was found to be >10. Adsorption equilibrium attained within 2 h time. The sorption of Ni(II) increased with rise of temperature.

Keywords

adsorption; nanocomposites; nanoporous materials; nickel; pH; zeolites; Freundlich model; Langmuir model; Ni; adsorption; aqueous solution; contact time; nanoporous; nanosize adsorbent; nickel ion; pH; removal process; time 2 h; zeolite-attapulgite composite; Aluminum; Chemical elements; Civil engineering; Crystalline materials; Forestry; Magnesium; Minerals; Nickel; Temperature distribution; Wastewater;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009. 3rd International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-2901-1

Electronic_ISBN

978-1-4244-2902-8

Type

conf

DOI

10.1109/ICBBE.2009.5162284

Filename

5162284