Supported liquid membrane-based simultaneous separation of cadmium and lead from wastewater

Removal of Cadmium(II) from Wastewater Using Novel Cadmium Ion-Imprinted Polymers

“…Wong et al 9 recommended that cadmium ions be removed by ion-exchange resin until its maximum sorption capacity has reached 2.2 mmol/g. Mehdi et al 10 reported porous anionic exchange membranes for the removal of cadmium from wastewater; and Kamal et al 11 separated cadmium from wastewater by a liquid membrane-based method, resulting in about a 79 % recovery of cadmium. Nevertheless, this method has no special selectivity and poor performance in reuse.…”

Supported liquid membrane based removal of lead(II) and cadmium(II) from mixed feed: Conversion to solid waste by precipitation

“…The contamination of aqueous environment by hazardous heavy metals such as lead(II) and cadmium(II), through industrial effluents, is a major problem and an universal concern to the research community owing to their carcinogenic, highly toxic and non-biodegradable nature [1,2]. Attention has been paid to reduce the concentrations of lead (II) and cadmium (II) in the effluents to their permissible limits (0.10 ppm for lead(II) and 0.03 ppm for cadmium(II)) set by the World Health Organization (WHO) [3].…”

“…The main benefits of selecting coconut oil are its low cost, easy availability and bio degradability. Moreover, it has high viscosity, high boiling point and high chemical stability in membrane pores [1,2,[16][17][18][19]. Various parameters such as concentration of feed phase, pH, concentration of carrier in membrane phase, concentration of stripping agent have also been studied.…”

“…At the optimum carrier concentration of 4.0% (v/v), extraction and recovery of Pb(II) were found to be 92.53% and 87.89%, respectively. Beyond the optimum carrier concentration, mobility of Pb(II)-carrier complex was reduced due to hindrance effect created by excess carrier and/or the complex leading to the reduction in both extraction and recovery[1,4].…”

Pb(II) Extraction with Benzo-18-Crown-6 Ether into Benzene under the Co-Presence of Cd(II) Nitrate in Water

“…Similarly, the M z+ separation with solvent extraction [13] and membrane transport experiments has been studied [14,15]. However, these quantitative considerations based on any equilibrium constants have not been reported.…”