Process for removing mercury from brine sludges

Details Process for removing mercury from brine sludges Process for removing mercury from brine sludges

C - Chemistry, Metallurgy

22

B

53/163, 204/43.4

C22B 43/00 (2006.01) C22B 7/00 (2006.01) C22B 7/04 (2006.01) C25B 1/36 (2006.01) C25B 15/08 (2006.01)

Patent

CA 1106613

ABSTRACT The mercury content of electrolysis cell brine sludge is reduced by sequentially: (1) acidifying the sludge to a pH below 2.5 and (2) leaching the sludge with aqueous hypochlorite solvent. The mercury content removed from the sludge may optionally be isolated from the solvent and reused as mercury cathode for brine electrolysis.

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