How Does Fungus A. fumigatus Free up K From Minerals? - PowerPoint PPT Presentation

henry teng associate professor dept of chemistry hteng@gwu edu 202 994 0112 office 202 994 0113 lab n.
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How Does Fungus A. fumigatus Free up K From Minerals? PowerPoint Presentation
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How Does Fungus A. fumigatus Free up K From Minerals?

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How Does Fungus A. fumigatus Free up K From Minerals?
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How Does Fungus A. fumigatus Free up K From Minerals?

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  1. Henry TengAssociate ProfessorDept of Chemistryhteng@gwu.edu(202)994-0112 (office) (202)994-0113 (lab)

  2. How Does Fungus A. fumigatus Free up K From Minerals? in contact A. fumigatus Feldspar separated Henry Teng, Chemistry

  3. How Does Fungus A. fumigatus Free up K From Minerals? Henry Teng, Chemistry

  4. How Does Fungus A. fumigatus Free up K From Minerals? Presumed Chemical Reactions w/o. Biology Neutral to weak acidic conditions 2KAlSi3O8 + 2H+ + 9H2O = Al2Si2O5(OH)4 + 4H4SiO4(aq) + 2K+ Strong acidic conditions KAlSi3O8 + 4H+ + 4H2O = Al3+ + 3H4SiO4(aq) + K+ Henry Teng, Chemistry

  5. How Does Fungus A. fumigatus Free up K From Minerals? Questions with Uncertain Answers: What is/are the force(s) that A. fumigatus uses to dissolve feldspar in the light of that: 1. Decreasing pH inhibits mineral dissolution 2. Mycelium-mineral physical interactions and insolule extracellular secretion promote additional dissolution Day 2 Day 7 Day 30 Henry Teng, Chemistry