PURIFICATION METHOD WITH RECYCLING OF EFFLUENTS

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United States of America Patent

APP PUB NO 20230371556A1
SERIAL NO

18028197

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The invention relates to a purification method, comprising the following steps: —supplying a stream (6) comprising a non-ionised species, monovalent cations and divalent cations; bringing the stream (6) into contact with a first cation exchange resin (1) in sodium and/or potassium form; —collecting a first fraction (7) which contains the non-ionised species and is enriched in monovalent cations and depleted of divalent cations with respect to the stream (6); —bringing the first fraction (7) into contact with a second cation exchange resin (2) in hydronium form; —collecting a second fraction (8) which contains the non-ionised species and is depleted of monovalent cations with respect to the first fraction (7); —regenerating the second cation exchange resin (2) with a sulphuric acid solution (10); —collecting a first regeneration effluent comprising at least one fraction A, the fraction A comprising sodium and/or potassium ions; and —recycling the fraction A to regenerate the first cation exchange resin (1).

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Patent Owner(s)

Patent OwnerAddress
NOVASEP PROCESS SOLUTIONS01700 SAINT-MAURICE-DE-BEYNOST

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
MERRIEN, Annick Saint-Maurice-de-Beynost, FR 4 46
ROUSSET, François Saint-Maurice-de-Beynost, FR 2 0

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