Solvent Extraction of Gold(I) from Alkaline Cyanide Solution with Furfuryl Thioalcohol

Hydrophobic ionic liquids as novel extractants for gold(I) recovery from alkaline cyanide solutions

“…These advantages make solvent extraction a promising technique for gold(I) recovery from cyanide solutions. During the past few years, various extractants and modifiers have been chosen to optimize the extraction system to increase loading capacity, improve selectivity, and reduce emulsification, as well as other practical considerations . However, practical applications of solvent extraction are difficult .…”

Endothermic solvent extraction of copper (II) with furfuryl thioalcohol from sulfate medium

“…Ren et al [27] investigated that single stage extraction of Cu (II) is > 99.5 % when 0.18 mol L -1 acetate ions were added in aqueous solution and pH was 4.44 and in the stripping process, the ability to back extract Cu(II) from the loaded D2EHPA is 6.0 mol L -1 HCl > 3.0 mol L -1 H2SO4 > 2.0 mol L -1 H3PO4. Some researchers have been used organosulfur compounds as extractant for effective and selective extraction of metals [28][29][30][31][32][33]. Organosulfur extractant have higher metal binding ability because presence of lone pair in high energy state and empty 3d orbitals which consequences especially in the field of metal ion complexation [34,35].…”

Efficiency of 2-dodecylaminopyridine for the liquid-liquid extraction of gold(III) from succinic acid medium

“…Solvent extraction of metals is already well established as efficient alternative to traditional techniques [21]. Different extractants have been developed and employed as extraction reagents for precious metals especially for gold (III) for both commercial and analytical purposes including trin-butylphosphate [22], cetylpyridinium bromide/tributyl phosphate [23], 2,3-dichloro-6-(3-caboxy-2-hydroxy-1-napthylazo)quinoxaline [24], N-n-octylaniline [25], 1-octyl-3-methylimidazolium hexafluorophosphate [26], 4-(4'-methoxybenzylideneimino)-5-methyl-4H-1,2,4triazole-3-thiol [27], N-methyl-N-butylhexylamide [28], furfuryl thioalcohol [29], 4-(4'-Flurobenylideneimino)-3-methyl-5-mercapto-1,2,4-triazole [30]. However, some of solvent extraction system used large quantity of extractant in different organic solvent, which may cause some of the environmental and workers health problems.…”