NDLI: Kinetic Model of Arsenic Sorption onto Zero-Valent Iron (ZVI)

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Exposure and Health : Volume 2, Issue 2, October 2010

Exposure and Health : Volume 2, Issue 1, May 2010

Exposure and Health : Volume 1

Kinetic Model of Arsenic Sorption onto Zero-Valent Iron (ZVI)

Content Provider	Springer Nature Link
Author	Eljamal, Osama Sasaki, Keiko Tsuruyama, Shoichi Hirajima, Tsuyoshi
Copyright Year	2010
Abstract	This study investigated the mechanisms involved in removing arsenic from water using zero-valent iron (ZVI) as sorbent. Relatively limited information is available on the kinetics aspects of sorption of arsenic compounds onto ZVI. In order to gain an understanding of the sorption kinetics, a detailed study was conducted in a controlled batch test and developed sorption kinetic model.The effects of different arsenic concentrations on the kinetics sorption rates of arsenic(V) and arsenic(III) were investigated. Arsenic(V) was removed by two mechanisms—surface adsorption and co-precipitation with Fe(III) on ZVI, while arsenic(III) was removed by adsorption on ZVI and oxidized to arsenic(V). Reaction rate constants were calculated for arsenic(V) and arsenic(III) at different concentrations by a second-order kinetic model.The results indicate that ZVI could be employed as sorbent materials to enhance the adsorption and co-precipitation processes to improve the removal rate of arsenic from water. The results also showed that the arsenic(III) oxidized to arsenic(V), while the analyses indicated that there was no measurable reduction of arsenic(V) to arsenic(III).
Starting Page	125
Ending Page	132
Page Count	8
File Format	PDF
ISSN	18761658
Journal	Exposure and Health
Volume Number	2
Issue Number	3-4
e-ISSN	18761666
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-10-30
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Arsenic sorption Kinetic model Zero-valent iron Arsenate co-precipitation Arsenite oxidation Iron(III) Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Environmental Health Pollution
Content Type	Text
Resource Type	Article
Subject	Pollution Health, Toxicology and Mutagenesis Public Health, Environmental and Occupational Health Water Science and Technology

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Kinetic Model of Arsenic Sorption onto Zero-Valent Iron (ZVI)