C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 11/00 (2006.01) C22B 3/18 (2006.01)
Patent
CA 2721235
The present invention relates to a cyanide-free process of isolating precious metal gold from a particulate material containing said metal, comprising the following steps of (i) prepar-ing an aqueous mixture containing said particulate material and biomass comprising having an S--LAYER or archaea having an S-LAYER; eubacte-ria and archaea, algae, and fungi; said biomass be-ing capable of adsorbing said metal; (ii) incubating said aqueous mixture of step (i) for allowing bind-ing of said metal to said biomass; (iii) separating the biomass having bound metal from the aqueous mixture of step (ii); and (iv) isolating the metal from said biomass separated in step (iii).
La présente invention concerne un procédé sans cyanure disolement du métal précieux or à partir dun matériau particulaire contenant ledit métal, comprenant les étapes suivantes consistant à (i) préparer un mélange aqueux contenant ledit matériau particulaire et de la biomasse comprenant une couche S ou des archéobactéries ayant une couche S; des eubactéries et des archéobactéries, des algues et des champignons; ladite biomasse étant capable dadsorber ledit métal; (ii) incuber ledit mélange aqueux de létape (i) pour permettre la liaison dudit métal à ladite biomasse; (iii) séparer la biomasse à laquelle le métal est lié du mélange aqueux de létape (ii); et (iv) isoler le métal à partir de ladite biomasse séparée dans létape (iii).
Gabor Esther
Zinke Holger
B.r.a.i.n. Biotechnology Research And Information Network Ag
Smart & Biggar
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