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Microbial Bioremediation Of Toxic Organic Pollutants - An Overview | 38476
Journal of Bioremediation & Biodegradation
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In Global scenario, industrial revolution appears
to result in rising up of chemical industries for
manufacturing a variety of chemicals to fulfill public
demands and need of synthetic materials in every
compartment of day-to-day life. The compounds like
explosives, pesticides, phenolics, synthetic polymers,
dyes etc. are the essential commodities and hence
produced in large quantities by these industries. The
high growth of both manufacturer and user industries
has led to pollution of the environment. The wastewaters
generated in the production of such compounds
are discharged in the environment particularly in
water bodies and soil leading to their pollution.
These wastewaters are not only in large volumes but
also contain a variety of toxic chemical compounds,
coloring agents etc. which are hazardous to both aquatic
and terrestrial life. Hence such wastewaters require
remediation. By virtue of ability to degrade a variety of
toxic chemicals, microorganisms play an important role
in bioremediation of environmental pollutants.
The present paper describes microbial remediation
methods developed for the chemo pollutants like
triphenylmethane dyes, synthetic polymers, and
their monomers, different groups of pesticides like
carbamates, organophosphates, organochlorine etc.,
and nitro compounds using different bacteria belonging
to the genera Arthrobacter, Bacillus, Brevundimonas
Microbacterium, Providencia, Pseudomonas and yeast
species viz. Candida, Pichia etc. Studies were carried
out using fixed film bioreactors, two stage bioreactors,
activated sludge processes etc. The involvement of
enzymes in degradation of these toxic pollutants and
genes encoding such detoxifying enzymes especially in
case of pesticides is discussed.
Dr. Pradnya Kanekar, M.Sc., Ph.D., has been working as Scientist G and Head, Microbial Sciences Division of MACS-Agharkar Research Institute, Pune, M.S. India. She has post doctoral research experience of 30 years since 1980. Her main areas of interest are biodegradation and bioremediation of toxic organic pollutants; microbial diversity and conservation of bacteria and archaea; biotechnological potential of extremophiles. So far 12 students have been awarded Ph.D. degree in the subject of Microbiology of Pune University and six students are registered for Ph.D. degree. 55 papers are published in peer reviewed journals. Five Indian patents are granted, three patents applied and one technology transferred for commercialization.