Separation and preconcentration of Cd(II) from chloride solutions using supported liquid membranes systems

Extraction of cadmium from dilute solution using supported liquid membrane

“…In this context, different liquid membrane processes have been proved to be an effective alternative for treatment of cadmium containing effluents/wastewaters [16][17][18][19][20][21]. The supported liquid membrane (SLM) has edge over other membrane processes with respect to its high selectivity, low energy utilization [18] and has been a subject of number of recent investigations for separation of cadmium and other metal ions from wastewaters/effluents using a variety of extractants [22][23][24][25][26][27][28].…”

Removal of Cd(II) from aqueous solution by using polyaniline/polystyrene nanocomposite

“…Because of its toxic effects, determining cadmium in different environmental samples is of paramount importance. Among the several technologies that can be used to remove toxic metals from liquid effluents, supported liquid membranes (SLMs) have become important for use in separation, purification, and analytical applications, and several works can be found in the literature concerning SLMs for the transport of cadmium [8–14].…”

Applicability of a Supported Liquid Membrane in the Enrichment and Determination of Cadmium from Complex Aqueous Samples

“…Transport experiments in a flat-sheet SLM configuration were carried out by using a two-compartment permeation cell provided with a circular window, where the supported liquid membrane was placed [ 36 ]. Durapore film (polyvinylidene difluoride, PVDF) (Merck, Germany) with 125 µm thickness, 0.2 µm pore diameter and 75% porosity was used as the polymeric support [ 35 ]. This support was soaked in the carrier solution (normally 0.5 M Aliquat 336 in decaline) for 2 h and then taken out, wiped with a piece of filter paper and then fixed between the two compartments of the SLM cell.…”

“…The feed and the stripping solutions (200 mL each) were placed in each compartment of the cell. Usually, the feed phase consisted of 10 mg L −1 Cd in NaCl or HCl, whereas ultra-pure water was used as a receiving phase [ 35 ]. Different aliquots (2 mL) were taken out from both aqueous phases at scheduled time intervals and the Cd concentration was determined by ICP-AES.…”

“…Following on from earlier work [ 35 ], here we propose to optimize the SLM composition by using anion exchangers as carriers to interact with the Cd anionic complexes formed in chloride media. Parameters affecting both flat-sheet and hollow fibre configurations of the SLM are investigated to allow an efficient separation and enrichment of the metal from complex aqueous samples.…”