Method for extracting phosphorous from solids using active leaching and phosphate-accumulating microorganisms
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United States of America Patent
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Apr 14, 2015
Grant Date -
May 3, 2012
app pub date -
Aug 14, 2009
filing date -
Aug 15, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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.
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International Classification(s)
- C12P:FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESI....
- C05D:INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C....
- C05B:PHOSPHATIC FERTILISERS
- B09C:RECLAMATION OF CONTAMINATED SOIL
- B09B:DISPOSAL OF SOLID WASTE
- D06M:TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D0....
- C02F:TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE....
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