C - Chemistry – Metallurgy – 12 – P
Patent
C - Chemistry, Metallurgy
12
P
C12P 3/00 (2006.01) C05B 13/00 (2006.01) C05B 15/00 (2006.01) C05F 7/00 (2006.01) C12N 1/00 (2006.01) C12P 39/00 (2006.01)
Patent
CA 2734105
The present invention relates to a method of selectively obtaining phosphorus from solids containing heavy metals and phosphate. In this method, the solid is treated under acidic aerobic conditions using microorganisms comprising leaching microorganisms and polyphosphate-accumulating microorganisms, so that the heavy metals and the phosphates are released from the solid and the released phosphates may be taken up by the polyphosphate-accumulating microorganisms. The phosphorus-enriched biomass that is obtained in this manner is separated and may be utilized, e.g., as organic fertilizer.
La présente invention porte sur un procédé de récupération sélective de phosphore à partir de matières solides contenant des métaux lourds et des phosphates. Dans ce procédé, la matière solide est traitée dans des conditions aérobies acides par des microorganismes qui comprennent des microorganismes à activité de lixiviation et stockant des polyphosphates, de telle sorte que les métaux lourds et le phosphate vont être libérés de la matière solide, et le phosphate libéré peut être absorbé par les microorganismes stockant les polyphosphates. La biomasse ainsi obtenue, enrichie au phosphore, est soumise à une séparation et peut être utilisée par exemple en tant qu'engrais biologique.
Dott Wolfgang
Zimmermann Jennifer
Borden Ladner Gervais Llp
Georg Fritzmeier Gmbh & Co. Kg
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