Use of Sodium Borohydride to Control Heavy Metal Discharge in the Photographic Industry
نویسنده
چکیده
Sodium borohydride treatment systems for control of heavy metal discharge offer several advantages to the photographic industry. Chemical reduction with sodium borohydride is rapid and results in low residual metal content; in addition, the reduced metals can be recovered with minimum expense. Sodium borohydride reduction is now being used to recover high purity silver from spent fixers more completely than alternative methods. Also, sodium borohydride treatment is an effective, economical method for removing low level heavy metal contamination from effluent streams. Journal of Applied Photographic Engineering 5 144-147 (1979)
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