Research and engineering assessment of biological solubilization of phosphate

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This research and engineering assessment examined a microbial phosphate solubilization process as a method of recovering phosphate from phosphorus containing ore compared to the existing wet acid and electric arc methods. A total of 860 microbial isolates, collected from a range of natural environments were tested for their ability to solubilize phosphate from rock phosphate. A bacterium (Pseudomonas cepacia) was selected for extensive characterization and evaluation of the mechanism of phosphate solubilization and of process engineering parameters necessary to recover phosphate from rock phosphate. These studies found that concentration of hydrogen ion and production of organic acids arising from oxidation ... continued below

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Pages: (46 p)

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Rogers, R.D.; McIlwain, M.E.; Losinski, S.J. & Taylor, D.D. March 1, 1993.

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This research and engineering assessment examined a microbial phosphate solubilization process as a method of recovering phosphate from phosphorus containing ore compared to the existing wet acid and electric arc methods. A total of 860 microbial isolates, collected from a range of natural environments were tested for their ability to solubilize phosphate from rock phosphate. A bacterium (Pseudomonas cepacia) was selected for extensive characterization and evaluation of the mechanism of phosphate solubilization and of process engineering parameters necessary to recover phosphate from rock phosphate. These studies found that concentration of hydrogen ion and production of organic acids arising from oxidation of the carbon source facilitated microbial solubilization of both pure chemical insoluble phosphate compounds and phosphate rock. Genetic studies found that phosphate solubilization was linked to an enzyme system (glucose dehydrogenase). Process-related studies found that a critical solids density of 1% by weight (ore to liquid) was necessary for optimal solubilization. An engineering analysis evaluated the cost and energy requirements for a 2 million ton per year sized plant, whose size was selected to be comparable to existing wet acid plants.

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Pages: (46 p)

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OSTI; NTIS; GPO Dep.

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  • Other: DE93010368
  • Report No.: EGG-2698
  • Grant Number: AC07-76ID01570
  • DOI: 10.2172/6350337 | External Link
  • Office of Scientific & Technical Information Report Number: 6350337
  • Archival Resource Key: ark:/67531/metadc1208115

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Office of Scientific & Technical Information Technical Reports

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  • March 1, 1993

Added to The UNT Digital Library

  • July 5, 2018, 11:11 p.m.

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  • Aug. 7, 2018, 4:23 p.m.

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Rogers, R.D.; McIlwain, M.E.; Losinski, S.J. & Taylor, D.D. Research and engineering assessment of biological solubilization of phosphate, report, March 1, 1993; United States. (digital.library.unt.edu/ark:/67531/metadc1208115/: accessed January 18, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.