System and method for extracting ions without utilizing ion exchange

Mark Kobrak (Inventor), Francesco Picchioni (Inventor)

Research output: Patent


A system for extracting ions from an aqueous solution without utilizing ion exchange. A semi-permeable membrane with 0.1 to 1000 nm diameter pores separates an aqueous salt solution from a chelating gel. The gel has un-crosslinked polymer (e.g. 1-10% by weight) and the balance water. The semi-permeable membrane lets ions diffuse into the chelating gel where the ions become trapped. The gel has a molecular weight that prevents its diffusion through the semi-permeable membrane.
Original languageEnglish
Patent numberWO2019152774
Priority date01/02/2018
Filing date01/02/2019
Publication statusPublished - 8-Aug-2019

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