Budidaya menghasilkan sejumlah besar limbah, terdiri dari metabolisme oleh-produk, makanan sisa, materi
feses dan residu dari masukan profilaksis dan terapeutik, mengarah pada penurunan kualitas air dan wabah
penyakit. Bioremediasi, aplikasi mikroba / enzim untuk tambak, adalah metode yang sedang digunakan untuk meningkatkan kualitas air dan menjaga kesehatan
dan stabilitas sistem akuakultur. Bioremediasi melibatkan mineralisasi bahan organik menjadi karbon
dioksida, memaksimalkan produktivitas primer yang merangsang produksi udang, nitrifikasi dan denitrifikasi
untuk (1) menghilangkan kelebihan nitrogen dari tambak dan (2) mempertahankan beragam dan stabil
masyarakat kolam dimana patogen dikeluarkan dari sistem dan spesies diinginkan mendapatkan didirikan.
Selain dari bahan organik merendahkan (detritivorous) bakteri heterotrofik, nitrifikasi, bakteri denitrifikasi dan
fotosintesis umumnya digunakan dalam bioremediasi.
Roselin, Alex; Dr.Chandrasekaran,M(Cochin University Of Science And Technology, November 29, 2012)
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Abstract:
There exists a need for potential microorganism that could
facilitate effective bioremediation of crude oil pollutants in the
environment. Hence it was desired to isolate a potential bacterium from
marine sediment, which often experiences oil pollution and develop a
bioprocess for crude oil biodegradation. In the present study the sediment
deposits in the beach of Munakkal, Trichur dist, Kerala, collected
immediately after the major event Tsunami in 2004 was collected and
analyzed by enrichment culture technique towards isolation of potential
strains that could degrade crude oil and its fractions. From the results
obtained it was found that the sediment deposits harbor several bacteria
with potential for degrading hydrocarbons. However, among the strains
obtained, isolate no. BTTS 10 showed capabilities for utilizing both
alkanes and aromatic hydrocarbons and hence the same was selected for
further studies.
Description:
Department of Biotechnology, Cochin
University of Science and Technology
Bright Singh, I S; Cini, Achuthan; Rosamma, Philip; Manju, N J(Elsevier, May 11, 2009)
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Abstract:
Shrimp grow out systems under zero water exchange mode demand constant remediation of total ammonia
nitrogen (TAN) andNO2
−–Nto protect the crop. To address this issue, aninexpensive and user-friendly technology
using immobilized nitrifying bacterial consortia (NBC) as bioaugmentors has been developed and proposed for
adoption in shrimp culture systems. Indigenous NBC stored at 4 °C were activated at room temperature (28 °C)
and cultured in a 2 L bench top fermentor. The consortia, after enumeration by epifluorescence microscopy,were
immobilized on delignifiedwood particles of a soft wood tree Ailantus altissima (300–1500 μm) having a surface
area of 1.87m2 g−1. Selection of wood particle as substratumwas based on adsorption of NBC on to the particles,
biofilm formation, and their subsequent nitrification potential. The immobilization could be achievedwithin 72 h
with an initial cell density of 1×105 cells mL−1. On experimenting with the lowest dosage of 0.2 g (wet weight)
immobilized NBC in 20 L seawater, a TAN removal rate of 2.4 mg L−1 within three days was observed. An NBC
immobilization device could be developed for on site generation of the bioaugmentor preparation as per
requirement. The product of immobilization never exhibited lag phase when transferred to fresh medium. The
extent of nitrification in a simulated systemwas two times the rate observed in the control systems suggesting the
efficacy in real life situations. The products of nitrification in all experiments were undetectable due to
denitrifying potency, whichmade the NBC an ideal option for biological nitrogen removal. The immobilized NBC
thus generated has been named TANOX (Total Ammonia Nitrogen Oxidizer)
Hatha, A A M; Edward, Gakpe; Pattanathu Rahman, K.S.M.(Journal of marine and atmospheric research, July , 2007)
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Abstract:
Biosurfactants are surface active compounds released by microorganisms. They are biodegradable non-toxic and
eco-friendly materials. In this review we have updated the information about different microbial surfactants. The
biosurfactant production depends on the fermentation conditions, environmental factors and nutrient availability. The
extraction of the biosurfactants from the cell-free supernatant using the solvent extraction procedure and the qualitative
and quantitative analysis has been discussed with appropriate equipment details. The application of the biosurfactant
includes biomedical, cosmetic and bioremediation. The type of microbial biosurfactants include trehalose lipids,
rhamnolipids, sophorolipids, glycolipids, cellobiose lipids, polyol lipids, diglycosyl diglycerides, lipoloysaccharides,
arthrofactin, lichensyn A and B, surfactin, viscosin, phospholipids, sulphonyl lipids and fatty acids. Rhamnolipid
biosurfactants produced by Pseudomonas aeruginosa DS10-129 showed significant applications in the bioremediation of
hydrocarbons in gasoline spilled soil and petroleum oily sludge. Rhamnolipid biosurfactant enhanced the bioremediation
process by releasing the weathered oil from the soil matrices and enhanced the bioavailability of hydrocarbons for microbial
degradation. It is having potential applications in the remediation of hydrocarbon contaminated sites. Biosurfactants from
marine microorganisms also offer great potential in bioremediation of oil contaminated oceanic environments