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Liquid-Liquid Extraction of Cadmium with Alamine 336 from Aqueous Chloride and Bromide Media

 

作者: CurtisW. Mcdonald,   GholamHossein Pahlavan,  

 

期刊: Separation Science  (Taylor Available online 1977)
卷期: Volume 12, issue 3  

页码: 271-279

 

ISSN:0037-2366

 

年代: 1977

 

DOI:10.1080/00372367708058076

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Studies have been made of variables such as reagent concentration, acid concentration, pH, mixing time, settling time, volume ratio, and stripping in order to develop optimum conditions to extract cadmium from aqueous chloride and bromide solutions. A 4-ppm cadmium solution can be extracted essentially quantitatively with an equal volume of 5% Alamine 336-xylene solution in 15 sec. Aqueous to organic ratios up to 20 to 1 can be utilized without loss of extraction efficiency. More than 98% of the extracted cadmium can be stripped from the nonaqueous layer with a series of aqueous strippants including 0.1MEDTA, 1MNaOH, and 2.5Mammonia.

 

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