Study on Separation/Enrichment of Trace Zinc Using Ternary Association Complex System

Xin Rong Wen; Chang Qing Tu

doi:10.4028/www.scientific.net/AMM.700.245

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 700Study on Separation/Enrichment of Trace Zinc Using...

Study on Separation/Enrichment of Trace Zinc Using Ternary Association Complex System

Abstract:

The paper presents a novel method for the separation/enrichment of trace Zn²⁺ using NH₄SCN –dodecyl dimethyl benzyl ammonium bromide (DDBAB)-water system.The effects of different parameters on the enrichment yield of Zn²⁺ have been investigated. The possible enrichment mechanism of Zn²⁺ was discussed.The results show that under the optimum conditions, Zn (SCN)₄^2-produced by Zn²⁺ and SCN^- reacts with DDBAB cation (DDBAB ⁺) to form the water-insoluble ternary association complex of [Zn (SCN)₄](DDBAB)₂, so Zn²⁺ was enriched quantitatively.While Al³⁺,Mn²⁺,Ni²⁺ and Pb²⁺ could not be enriched. Thereby, the quantitative separation of Zn²⁺from the above metal ions could be achieved.A new method for the separation/enrichment of trace zinc was established. The proposed method has been successfully applied to the separation/enrichment of trace Zn²⁺ in the samles of synthetic water, and the enrichment yield is 96.4%-99.5%.

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Periodical:

Applied Mechanics and Materials (Volume 700)

Pages:

245-248

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.700.245

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Online since:

December 2014

Authors:

Xin Rong Wen*, Chang Qing Tu

Keywords:

Ammonium Thiocyanate, Dodecyl Dimethyl Benzyl Ammonium Bromide, Separation/Enrichment, Zinc(II)

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