Facilitated transport of Fe(III) and Cr(III) using a DP8R/Exxsol D100 carrier in Flat-Sheet supported liquid membranes
DOI:
https://doi.org/10.3989/revmetalm.e288.1733Keywords:
Chromium, DP8R, Iron, Membrane transport, Nickel, Rinse watersAbstract
Taking as a basis the composition of stainless steel rinse waters, the purification of nickel by the transport of Fe(III) and Cr(III) through a flat-sheet supported liquid membranes impregnated with DP8R (bis((2-ethylhexyl) phosphoric acid) in Exxsol D100 has been investigated. Different experimental variables affecting metals transport are considered: hydrodynamic conditions, and variations in the composition of the feed, carrier and stripping phases. Under optimal conditions (pH 3, 40% v/v DP8R), Fe(III) and Cr(III) are selectively removed, leaving purified nickel solutions.
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