Transcription of LECTURE 12 BIOREMEDIATION - MIT OpenCourseWare
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LECTURE 12 BIOREMEDIATION - MIT OpenCourseWare
LECTURE 12 BIOREMEDIATIONB ioremediationBioremediation is the use of microorganisms to destroy or immobilize waste materialsMicroorganisms include:Bacteria (aerobic and anaerobic)FungiActinomycetes (filamentous bacteria) BIOREMEDIATION mechanismMicroorganisms destroy organic contaminants in the course of using the chemicals for their own growth and reproductionOrganic chemicals provide:carbon, source of cell building material electrons, source of energyCells catalyze oxidation of organic chemicals (electron donors), causing transfer of electrons from organic chemicals to some electron acceptorElectron acceptorsElectron acceptors:In aerobic oxidation, acceptor is oxygenIn anaerobic, acceptor is (with decreasing efficiency):nitratemanganeseironsulfateM icroorganisms also need essential nutrients such as nitrogen and phosphoruspE-10-50+5+10+15 AEROBIC RESPIRATIONIRON REDUCTIONSULFATE REDUCTIONNITRATE REDUCTIONMANGANESE REDUCTIONMETHANE FERMENT
May 11, 2004 · Developed by the Naval Facilities Engineering Service Center, t he basic biopile system includes a treatment bed, an aeration sys tem, an irrigation/nutrient system and a leachate collection system. Moisture, heat, nutrients, oxygen, and …
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