High Flux Recovery of Copper(II) from Ammoniacal Solution with Stable Sandwich Supported Liquid Membrane

Abstract

The recovery of Cu­(II) from ammoniacal solutions with the sandwich supported liquid membrane was studied by using 4-ethyl-1-phenyl-1,3-octadione as the carrier. The transport behavior of Cu­(II), membrane stability and selectivity were investigated. The transport efficiency of Cu­(II) in the membrane module is evidently dependent on the feed pH, carrier concentration, phase ratio and temperature, but almost independent of the H2SO4 concentration in receiving phase. The increase of carrier concentration and temperature can simultaneously enhance Cu­(II) transport and initial copper flux in the feed phase, while both of them decrease as the phase ratio increases. The initial copper flux can reach 759 mmol m–2 h–1 at 45 °C. A satisfied membrane stability was obtained, and the copper concentration in the receiving phase can reach 3.91 g L–1 via uphill transport after five cycles. The main transport resistance could derive from the diffusion process of the copper complexes through the receiving phase/membrane interface. Moreover, the Cu­(II) can be selectively recovered over Ni­(II) and Zn­(II). The high flux and good membrane stability makes the system promising for recovering metal values from various industrial process effluents.

Process optimization and mechanism for the selective extraction of copper(ii) from polymetallic acidic solutions using a polymer inclusion membrane (PIM) with Mextral®5640H as the carrier

“…Additionally, the need for sequential extraction and stripping steps, along with the use of large amounts of potentially toxic and ammable organic solvents and extractants, raises environmental and safety concerns. 25 As alternatives, emulsion liquid membrane, bulk liquid membrane, supported liquid membrane (SLM), hollow ber renewal liquid membrane and other separation technologies have been applied in hydrometallurgy for Cu 2+ , Co 2+ , Ni 2+ and Zn 2+ recovery and separation. [26][27][28] However, a drawback is the loss of membrane solvent and/or carrier into the aqueous phase during prolonged processes, leading to reduced lifespan of the membranes and hindering the industrial application of membrane separation technologies.…”

Continuous Transport of Zn(II) by Ammonium Chloride Media via Supported Liquid Membrane System

“…There are several methods for the recovery of zinc‐bearing, such as solvent extraction [18, 19], adsorption [20], ion exchange [1, 21–23], carbonization [24], precipitation and liquid membrane separation processes [25–28]. Although the solvent extraction is very successful in industry, it will inevitably consume a large amount of expensive extractants when enriching the low‐concentration metal ions.…”

“…There are several methods for the recovery of zincbearing, such as solvent extraction [18,19], adsorption [20], ion exchange [1,[21][22][23], carbonization [24], precipitation and liquid membrane separation processes [25][26][27][28].…”

Mathematical modeling for facilitated transport of Ge(IV) through supported liquid membrane containing Alamine 336

“…Liquid membrane techniques, especially supported liquid membranes (SLMs), have been increasingly used for treating and purifying solutions in hydrometallurgical industries Benzal et al (2004); (Bhatluri et al 2015;Chaturabul et al 2015;Duan et al 2017b;Hosseini et al 2016;Kaya et al 2013;Mokhtarani et al 2015;Peydayesh et al 2013;Wang et al 2015). Germanium is a metalloid that may exist in wastewaters and effluents of coal fly ash and zinc production residues.…”