Extraction of Copper from Aqueous Solutions by Liquid Membrane Processes

Copper extraction from ammoniacal medium in a pulsed sieve-plate column with LIX 84-I

“…In a previous study, the present authors corroborated that the kinetics of the extraction-stripping process in hollow fibers was faster using LIX 54 [25]. Also, the recovery of copper from ammoniacal medium using emulsion liquid membranes was examined [25,26]. LIX 84-I exhibited a very high extraction rate but the accumulation of solute in the membrane was higher than in the case of LIX 54.…”

“…In fact, LIX 54 provides low ammonia loading, ease of stripping and fast transfer kinetics. In a previous study, the present authors corroborated that the kinetics of the extraction-stripping process in hollow fibers was faster using LIX 54 [25]. Also, the recovery of copper from ammoniacal medium using emulsion liquid membranes was examined [25,26].…”

“…The relative resistances to mass transfer in the membrane process were also determined according to the same approach described in previous studies [25,52]. The contribution of chemical reaction to the overall resistance of mass transfer was found to be around 80%, which is in agreement with the results obtained with column tests.…”

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

“…Hydrometallurgical techniques such as wet chemical method [7], emulsion liquid membrane technology [8,9], solvent extraction [10][11][12][13][14][15][16][17] etc. have been used significantly for the recovery of copper from various leach liquors.…”