Selective transport of copper (II) from zinc (II), lead (II), cadmium (II), nickel (II), and cobalt (II) ions mixture through bulk liquid membrane using 5-nitro-8-quinolinol as a carrier

Abstract

A B S T R A C TThe transport of Cu 2+ ion through a chloroform (CHCl 3 ) bulk liquid membrane containing 5-nitro-8-quinolinol (NQ) as a selective carrier was studied. The NQ is an efficient carrier for the transport of Cu 2+ from aqueous solutions containing equimolar concentration of other cations such as Cd 2+ , Pb 2+ , Zn 2+ , Ni 2+ , and Co 2+ ions. The parameters that have influence on the transport efficiency such as transport time, type, and concentration of stripping agent in acceptor phase, concentration of NQ in membrane phase, pH of donor phase, and stirring rate were examined. Under optimum conditions, the extent of Cu 2+ transports across the liquid membrane was about 33.05% after 24 h and cation fluxes (J M ) were studied for the transport of Cu 2+ in different membranes, and the maximum amount of J M was 9.58 × 10 −9 (mol/m 2 s) in CHCl 3 . The applicability of the method was examined for the separation of copper (II) ions from real liquid samples. Transport efficiency of Cu 2+ for three replicate measurements in river liquid samples RW 1 , RW 2 , and RW 3 obtained 29.9 ± 2.2%, 32.0 ± 1.5%, and 30.3 ± 2.1%, respectively, after 24 h.

Use of cyclopentyl methyl ether (CPME) as green membrane for acetic acid removal by facilitated bulk liquid membrane: A transport and kinetic study

“…In most cases, the increase in the concentration of carrier enhances the solute transport. [35,36] In this part, the carrier effect in membrane phase was examined using different TBP concentrations in CPME. The impact of TBP and its concentration on the acid transport was plotted in Figure 4.…”

Removal of nickel ions from synthetic wastewater by bulk liquid membrane

“…The BLM consists of feed, membrane and stripping phases [15]. The feed phase containing the metal ion to be transported, the membrane phase contains the carrier which is responsible for the transport of metal ions, having it positioned between feed and stripping phases and the stripping phase in which metal ions will be released [1]. In this work, simulteneous extraction and recovery of Ni (II) from synthetic wastewater by bulk liquid membrane was conducted with selection a suitable liquid membrane (xylene, and soybean oil), and a suitable mobile carrier (TBP, and D2EHPA).…”