US Patent 9957180 Ion sequestration for scale prevention
Patent 9957180 was granted and assigned to Massachusetts Institute of Technology on May, 2018 by the United States Patent and Trademark Office.
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Cations that can precipitate from an aqueous composition to produce scaling are sequestered by adding a multi-dentate ligand to the aqueous composition. The multi-dentate ligand bonds with the cation to form a non-scaling ionic complex; and the aqueous solution with the ionic complex is used in a process that produces substantially pure water from the aqueous composition, where the cation, absent formation of the ionic complex, is subject to scaling. The pH of the aqueous composition (or a brine including components of the aqueous composition) is then reduced to release the cation from the multi-dentate ligand; and the multi-dentate ligand, after the cation is released, is then reused in a predominantly closed loop.
US Patent 09957180 Ion sequestration for scale prevention US Patent 9957180 Ion sequestration for scale prevention
US Patent 09957180 Ion sequestration for scale prevention
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