Non-dispersive selective extraction of germanium from fly ash leachates using membrane-based processes
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Non-dispersive selective extraction of Ge(IV) tartrates was carried out from simulated fly ash solutions containing heavy metals through supported liquid membranes (SLM). The optimum transport was obtained using a PTFE membrane containing Alamine 336 5%v/v in the condition of tartaric acid 2.76 mmol/L and HCl 1 mol/L in feed and strip phases, respectively. Under this condition, a hollow fiber (HF) SLM experiment was conducted. The results showed that this system could transport germanium from the feed to the strip phase so much faster than the flat sheet (FS) SLM system. The rate of transport through HFSLMs is comparable to dispersive extractions.
CitationKamran, H. [et al.]. Non-dispersive selective extraction of germanium from fly ash leachates using membrane-based processes. "Separation Science and Technology (Philadelphia)", 7 Gener 2019, vol. 54, num. 17, p. 2879-2894.