Abstract
The transport of Cu2+ ion through a chloroform (CHCl3) 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 Cu2+ from aqueous solutions containing equimolar concentration of other cations such as Cd2+, Pb2+, Zn2+, Ni2+, and Co2+ 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 Cu2+ transports across the liquid membrane was about 33.05% after 24 h and cation fluxes (JM) were studied for the transport of Cu2+ in different membranes, and the maximum amount of JM was 9.58 × 10−9 (mol/m2s) in CHCl3. The applicability of the method was examined for the separation of copper (II) ions from real liquid samples. Transport efficiency of Cu2+ for three replicate measurements in river liquid samples RW1, RW2, and RW3 obtained 29.9 ± 2.2%, 32.0 ± 1.5%, and 30.3 ± 2.1%, respectively, after 24 h.
Published Version
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