Systems Microbiolo35

Systems Microbiolo35 - very reactive (rocket fuel) The...

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Systems Microbiology ° Organisms that don’t use oxygen have similar electron transport chains, they just don’t use oxygen as the final electron acceptor. Often, they use iron, sulfate, or nitrate. ° Chemolithotrophs are the same story ° These kinds off microbes are important, for example, in aquariums. You use them to keep the fish from dying of ammonium poisoning from their own waste. ° Applications o The nitrogen from fertilizers gets into ground waters ° Anammox: “Anaerobic Ammonium Oxidation.” ° This is a pretty new method. ° Broda predicted (solely based on the thermodynamics) that microbes that do this must exist: 2222 2 NHNONHO + °° →+ ° If a favorable niche exists, then something will evolve to fill it ° The microbes were discovered ten years ago ° These microbes produce hydrazine, which is
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Unformatted text preview: very reactive (rocket fuel) The organisms contain this reactive hydrazine within special pockets These organisms are not easy to grow, but with the right conditions you can do it These organisms also do carbon dioxide removal as well as nitrogen removal People have built big plants that do this very efficiently now, particularly in the Netherlands Denitrifiers are another way you can remove nitrogen o Picture: Geobacter growing on iron hydroxides. They grow on a solid, not in a solution o Microbial redox interactions with uranium: an environmental perspective o If you look at a sediment, you can predict where the different types of reduction are going to occur on each level. This has to do with energetics it explains the order (G o )...
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