Method of Removing Chromate Ions from an Ion-Exchange Effluent
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United States of America Patent
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Aug 10, 2017
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Jul 24, 2015
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Jul 25, 2014
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Abstract
The present invention relates to a method of removing chromate ions from an ion-exchange effluent, the method comprising: (i) providing an ion-exchange effluent comprising chromate ions obtained from the regeneration of an ion-exchange material, (ii) admixing the ion-exchange effluent with a source of alkali metal dithionite to form a first precipitate, and (iii) removing the first precipitate
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