Removal of mercury from waste streams

Details Removal of mercury from waste streams Removal of mercury from waste streams

C - Chemistry, Metallurgy

02

F

C02F 1/62 (2006.01) B01J 39/04 (2006.01) C02F 1/20 (2006.01) C02F 1/42 (2006.01) C02F 1/70 (2006.01) C02F 1/76 (2006.01) C02F 9/00 (2006.01) C22B 3/44 (2006.01) C22B 43/00 (2006.01)

Patent

CA 2081835

Thimerosal is removed from aqueous effluent streams from vaccine production to provide an environmentally-acceptable effluent stream. The thimerosal first is converted to ionic form by chlorination, the resulting solution is dechlorinated to remove dissolved unreacted chlorine, and then the ionic mercury is removed by ion-exchange employing thiol groups.

Le thimérosal est éliminé dans les flux d'effluent aqueux provenant de la production de vaccin pour donner un effluent acceptable du point de vue environnemental. Le thimérosal est d'abord converti en forme ionique par chloration; la solution résultante est déchlorée pour éliminer le chlore dissous n'ayant pas réagi; enfin, le mercure ionique est éliminé par échange ionique utilisant des groupes thiol.

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