Describe Biodegradation

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Information about Describe Biodegradation
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Published on November 5, 2008

Author: b.stev

Source: slideshare.net

Description

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

Describe BIODEGRADATION b.stev

 

these microbes grow in 10-35 o C + H2O + decaying organic matter the process gives off : heat + gases

(Wikipedia, 2008)

(Wikipedia, 2008)

(Wikipedia, 2008)

 

 

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)

XENOBIOTIC COMPOUNDS Industry releases many chemicals, these are often utilised by microbes dioxins from chlorine bleaching human hormones near sewage pipe s (Wikipedia, 2008)

Industry releases many chemicals,

these are often utilised by microbes

dioxins from chlorine bleaching

human hormones near sewage pipe s

Chlorobenzenes 2,4dichlorophenoxyacetic acid Nitroaromatic compounds Chloroalkanes Herbicide Atrazene can ALL sustain microbial processes

Chlorobenzenes

2,4dichlorophenoxyacetic acid

Nitroaromatic compounds

Chloroalkanes

Herbicide

Atrazene

MODIFICATION : the chemical is altered for processes CONJUGATION : use is made of any genetic material EXCRETION : disposing of unwanted material a 3 phase process

 

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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