Describe Biodegradation

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biodegradation of natural materials, xenobiotic compounds, time occurence in biodegradation, uses of biodegradation, landfill, compost, aerobic biodegradation, anaerobic biodegradation, microbial, landfill waste, compost piles, microbe growth

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  • Describe Biodegradation

    1. 1. Describe BIODEGRADATION b.stev
    2. 3. these microbes grow in 10-35 o C + H2O + decaying organic matter the process gives off : heat + gases
    3. 4. (Wikipedia, 2008)
    4. 5. (Wikipedia, 2008)
    5. 6. (Wikipedia, 2008)
    6. 9. How long do some common things take to degrade? Tetrapaks 1-5 yrs 75 days for a Biodegradable Plastic Bag OR Paper & Styrofoam Cups Plastic Bags 10/20yrs Orange Peels 1 month Cotton rags 1-5 mth Paper 2-5 mth (Wikipedia, 2008)
    7. 10. XENOBIOTIC COMPOUNDS <ul><li>Industry releases many chemicals, </li></ul><ul><li>these are often utilised by microbes </li></ul><ul><li>dioxins from chlorine bleaching </li></ul><ul><li>human hormones near sewage pipe s </li></ul>(Wikipedia, 2008)
    8. 11. <ul><li>Chlorobenzenes </li></ul><ul><li>2,4dichlorophenoxyacetic acid </li></ul><ul><li>Nitroaromatic compounds </li></ul><ul><li>Chloroalkanes </li></ul><ul><li>Herbicide </li></ul><ul><li>Atrazene </li></ul>can ALL sustain microbial processes
    9. 12. MODIFICATION : the chemical is altered for processes CONJUGATION : use is made of any genetic material EXCRETION : disposing of unwanted material a 3 phase process
    10. 14. Bibliography Pollution Issues. (2007) . Biodegradation . Retrieved September 8, 2008, from http//: www.pollutionissues.com/A- Bo/ Biodegradation .html Wikipedia. (2008). Biodegradation – wikipedia , the free encyclopedia . Retrieved September 8, 2008, from http//:www.en.wikipedia. org/wiki/Biodegradable Www.molecular-plant-biotechnology.info. (2008). T ypes of recalcitrant xenobiotic compounds, halocarbons, synthetic . Retrieved September 9, 2008, from http:// www.molecular-plant-biotechnology.info/ environmental-biotechnology/microrganisms-involved-in-aerobic-d igestion.htm

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