Uploaded by MrRichardKranium on Apr 30, 2011
Bioremediation is the use of microorganism metabolism to remove pollutants. Technologies can be generally classified as in situ or ex situ. In situ bioremediation involves treating the contaminated material at the site, while ex situ involves the removal of the contaminated material to be treated elsewhere. Some examples of bioremediation technologies are phytoremediation, bioventing, bioleaching, landfarming, bioreactor, composting, bioaugmentation, rhizofiltration, and biostimulation.
Bioremediation can occur on its own (natural attenuation or intrinsic bioremediation) or can be spurred on via the addition of fertilizers to increase the bioavailability within the medium (biostimulation). Recent advancements have also proven successful via the addition of matched microbe strains to the medium to enhance the resident microbe population's ability to break down contaminants. Microorganisms used to perform the function of bioremediation are known as bioremediators.
Not all contaminants, however, are easily treated by bioremediation using microorganisms. For example, heavy metals such as cadmium and lead are not readily absorbed or captured by organisms. The assimilation of metals such as mercury into the food chain may worsen matters. Phytoremediation is useful in these circumstances because natural plants or transgenic plants are able to bioaccumulate these toxins in their above-ground parts, which are then harvested for removal. The heavy metals in the harvested biomass may be further concentrated by incineration or even recycled for industrial use.
The elimination of a wide range of pollutants and wastes from the environment requires increasing our understanding of the relative importance of different pathways and regulatory networks to carbon flux in particular environments and for particular compounds, and they will certainly accelerate the development of bioremediation technologies and biotransformation processes.
The use of genetic engineering to create organisms specifically designed for bioremediation has great potential. The bacterium Deinococcus radiodurans (the most radioresistant organism known) has been modified to consume and digest toluene and ionic mercury from highly radioactive nuclear waste.
Most commonly, the process is misunderstood. The microbes are ever-present in any given context and are generally referred to as "normal microbial flora". During bioremediation (biodegradation) processes, fertilizer/nutrient supplementation is introduced to the environments in efforts to maximize growth and production potential. Common misbelief is that microbes are transported and dispersed into an unadulterated environment.
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- biodegrade
- bioremediation
- microorganism
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- pollutants
- ex
- situ
- phytoremediation
- bioventing
- bioleaching
- landfarming
- bioreactor
- composting
- bioaugmentation
- rhizofiltration
- biostimulation
- what
- WTF
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@ScrewtheMossad Troll. hahaha.. So which screen name are you using now cointelpro troll, I take that back your just a cointel troll and not a pro troll. Because if you were your handler would pay you, but instead they just use you like brainwashed sheep. I look forward to your reply, that is unless you made this screen name so you can do a drive by trolling, Which we both understand is your nature no matter how you try to deni it. Care to try again or is that all you got?
MrRichardKranium 4 months ago
@MultiUniv3rsal Truth hurts so much doen't it little troll. Must be why you go to such lenghts to avoid it.
MrRichardKranium 4 months ago