Extraction of gallium from Bayer liquor using extractant produced from cashew nutshell liquid
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Nguyen, Thanh Vinh
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Hoang, A. and Nguyen, H. and Bui, N. and Vu, H. and Vo, T. and Nguyen, T.V. and Phan, C. 2015. Extraction of gallium from Bayer liquor using extractant produced from cashew nutshell liquid. Minerals Engineering. 79: pp. 88-93.
Oximes of alkyl salicylaldehydes were synthesized from cardanol extracted from cashew nutshell liquid with SnCl4 as a catalyst. Molecular structures, physical and chemical properties of these oximes were investigated by spectroscopic data. These oximes were used as gallium extractant from a concentrated Bayer liquor of Alumina Tanrai (Vietnam). Results indicated that about 80% of gallium was recovered. This study opens up new opportunities to employ an environmentally friendly extractant for recovery of precious metals from industrial waste.
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