Adsorption and Coprecipitation of As(V) from Aqueous Solutions by Aluminum Hydroxide

Author

Liang, Meina ; Zhao, Yanlin ; Zhu, Yinian ; Liu, Huili ; Cai, Fenfen

Author_Institution

Coll. of Environ. Sci. & Eng., Guilin Univ. of Technol., Guilin, China

fYear

2010

fDate

18-20 June 2010

Firstpage

1

Lastpage

4

Abstract

The effects of solution pH and initial concentration on adsorption and coprecipitation of As(V) from aqueous solutions by aluminum hydroxide [Al(OH)3] for 50d and 1120d were studied. The XRD, FT-IR and SEM results indicated that there was only slight difference between the Al(OH)₃ adsorbents before and after adsorption, but their crystal structure had not changed. The adsorption efficiency of As(V) onto Al(OH)₃ increased with the increasing pH when pH<;6.0. When pH>9, the adsorption efficiency decreased with the increasing pH. For the initial As(V) concentration Co=0.1 or 0.01 mmol/L, the adsorption efficiency exceeded 99% at pH 6-9 after 50d or 1120d reaction, but the As(V) concentration in the solution after adsorption for 1120d was higher than that for 50d.

Keywords

Fourier transform spectra; X-ray diffraction; adsorption; aluminium compounds; arsenic; crystal structure; infrared spectra; pH; precipitation (physical chemistry); scanning electron microscopy; water pollution control; Al(OH)₃; As; FTIR spectra; SEM; XRD; adsorbents; adsorption; aluminum hydroxide; aqueous solutions; coprecipitation; crystal structure; pH; time 1120 d; time 50 d; Aluminum; Chemical analysis; Computer aided instruction; Educational institutions; Humans; Protection; Purification; Wastewater treatment; Water pollution; X-ray scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on

Conference_Location

Chengdu

ISSN

2151-7614

Print_ISBN

978-1-4244-4712-1

Electronic_ISBN

2151-7614

Type

conf

DOI

10.1109/ICBBE.2010.5517530

Filename

5517530