Adsorption of Inorganic Arsenic As(Ⅲ), As(Ⅴ) and F- on MgAl-NO<sub>3</sub>-LDH in Water

LIANG Dujuan; QIU Yinan; WU Min; YANG Xiaojing

doi:10.3969/j.issn.1674-991X.2016.01.004

Volume 6 Issue 1

Jan. 2016

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LIANG Dujuan, QIU Yinan, WU Min, YANG Xiaojing. Adsorption of Inorganic Arsenic As(Ⅲ), As(Ⅴ) and F- on MgAl-NO3-LDH in Water[J]. Journal of Environmental Engineering Technology, 2016, 6(1): 22-25. doi: 10.3969/j.issn.1674-991X.2016.01.004

Citation:

LIANG Dujuan, QIU Yinan, WU Min, YANG Xiaojing. Adsorption of Inorganic Arsenic As(Ⅲ), As(Ⅴ) and F- on MgAl-NO₃-LDH in Water[J]. Journal of Environmental Engineering Technology, 2016, 6(1): 22-25. doi: 10.3969/j.issn.1674-991X.2016.01.004

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Adsorption of Inorganic Arsenic As(Ⅲ), As(Ⅴ) and F- on MgAl-NO₃-LDH in Water

doi: 10.3969/j.issn.1674-991X.2016.01.004

1.
College of Chemistry, Beijing Normal University
2.
The Second High School Attached to Beijing Normal University
3.
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences

More Information

Corresponding author: YANG Xiaojing E-mail: yang.xiaojing@bnu.edu.cn
Received Date: 2015-08-31
Rev Recd Date: 2015-12-09
Publish Date: 2016-01-20

Abstract

Abstract

NO₃-type layered double hydroxide (MgAl-NO₃-LDH) was prepared via an ion exchange method, and its adsorption capacity toward As(Ⅲ), As(Ⅴ) and F^- with trace amount in water was investigated. The materials after the adsorption were desorbed using acid-salt method and the adsorption capacity was further tested. The results showed that the adsorption capacity toward As(Ⅲ)，As(Ⅴ) and F^- was 0.026, 0.11 and 3.8 mg/g-LDH, respectively, and the main adsorption mechanisms of MgAl-NO₃-LDH were the ion exchange. After regeneration the uptake amount toward As(Ⅲ) was found to be reduced to 0.014 mg/g-LDH, but that toward As(Ⅴ) was still high (0.099 mg/g-LDH).
- MgAl-NO₃-LDH,
- arsenic,
- fluorine,
- adsorption,
- desorption