Abstract
In this study, the transport of Cr(VI) ions through polymer inclusion membrane (PIM) containing 5-(4-phenoxyphenyl)-6H-1,3,4-thiadiazin-2-amine (FFAT) firstly used as a carrier from acidic aqueous solution into CH 3COONH 4 aqueous solution was presented. PIM was characterized by AFM, FTIR techniques and contact angle measurements. The efficiency of Cr(VI) transport through PIM was optimized as a function of the donor and acceptor phase compositions as well as the membrane composition. The transport efficiency of Cr(VI) was obtained as 89.83% after 10 h under the optimized conditions. Also, a selective removal experiment of Cr(VI) ions from electroplating wastewater including Cr(VI), Cu(II), Ni(II), Al(III) and Fe(III) was performed and the selective removal of Cr(VI) was successfully carried out with the recovery factor of 43.29%. This novel PIM containing FFAT as a carrier exhibited an excellent Cr(VI) transport characteristic and a high selectivity for Cr(VI) ions among other heavy metal ions. It was observed that FFAT can be used as a carrier in PIMs for transport of Cr(VI).
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