Capacity of Cr(VI) reduction in an aqueous solution using different sources of zerovalent irons

Jae Yang; Jong Kim; Yong Ok; Su-Jung Kim; Kyung-Yoal Yoo

doi:10.1007/s11814-006-0011-5

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Capacity of Cr(VI) reduction in an aqueous solution using different sources of zerovalent irons

Journal article

Open access

Peer reviewed

Capacity of Cr(VI) reduction in an aqueous solution using different sources of zerovalent irons

Jae Yang, Jong Kim, Yong Ok, Su-Jung Kim and Kyung-Yoal Yoo

The Korean journal of chemical engineering, Vol.23(6), pp.935-939

11/2006

DOI: 10.1007/s11814-006-0011-5

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Abstract

Zerovalent iron (ZVI) has drawn intense interest as an effective and inexpensive tool to enhance degradation of various environmental contaminants. Reduction of Cr(VI) to Cr(III) by ZVI merits environmental concern as a hazardous species is transformed into a non-hazardous one. Objectives of this research were to assess kinetics and capacity of Cr(VI) reduction by different sources of ZVIs, of which chemical parameters can base in situ application of ZVI to treat Cr(VI) contaminated water. Reduction kinetics were first-order and rapid showing that 50% of the initial Cr(VI) was reduced within 7.0 to 347 min depending on Cr(VI) concentration, temperature and ZVI source. The reduction rates were increased with decreasing the initial Cr(VI) concentrations and increasing the reaction temperatures. The J ZVI (Shinyo Pure Chemical Co., Japan) was more effective in Cr(VI) reduction than PU (Peerless Metal Powders, USA). The maximum reduction capacities of J and PU ZVIs at 25°C were 0.045 and 0.042 mmol g−1 Fe0, respectively. A relatively higher value of the net reaction energy (E a ) indicated that Cr(VI) reduction by ZVI was temperature dependent and controlled by surface properties of ZVI. Chemical parameters involved in the Cr(VI) reduction by ZVI such as temperature quotient, kinetic rates, and stoichiometry indicated that the ZVI might be effective for in situ treatment of the Cr(VI) containing wastewater.

Biotechnology

Catalysis

Chemistry

Cr(VI) Reduction

First-order Kinetics

Industrial Chemistry/Chemical Engineering

Materials Science

Reduction Capacity

Zerovalent Iron

Details

Title: Subtitle: Capacity of Cr(VI) reduction in an aqueous solution using different sources of zerovalent irons
Creators: Jae Yang - Division of Biological Environment Kangwon National University 192-1, Hyoja 2-dong Chuncheon 200-701 Korea
Jong Kim - School of Natural Resources University of Nebraska Lincoln Nebraska 68583-0915 USA
Yong Ok - Department of Renewable Resources University of Alberta Edmonton Alberta T6G 2E3 Canada
Su-Jung Kim - Division of Biological Environment Kangwon National University 192-1, Hyoja 2-dong Chuncheon 200-701 Korea
Kyung-Yoal Yoo - Division of Biological Environment Kangwon National University 192-1, Hyoja 2-dong Chuncheon 200-701 Korea
Resource Type: Journal article
Publication Details: The Korean journal of chemical engineering, Vol.23(6), pp.935-939
DOI: 10.1007/s11814-006-0011-5
ISSN: 0256-1115
eISSN: 1975-7220
Publisher: Springer US
Language: English
Date published: 11/2006
Academic Unit: Occupational and Environmental Health
Record Identifier: 9984214943102771

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