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Biorremediation

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https://www.readbyqxmd.com/read/17505758/alternative-methodology-for-isolation-of-biosurfactant-producing-bacteria
#1
N Krepsky, F S Da Silva, L F Fontana, M A C Crapez
Wide biosurfactant application on biorremediation is limited by its high production cost. The search for cheaper biossurfactant production alternatives has guided our study. The use of selective media containing sucrose (10 g x L(-1)) and Arabian Light oil (2 g x L(-1)) as carbon sources showed to be effective to screen and maintain biosurfactant-producing consortia isolated from mangrove hydrocarbon-contaminated sediment. The biosurfactant production was assayed by kerosene, gasoline and Arabian Light Emulsification activity and the bacterial growth curve was determined by bacterial quantification...
February 2007: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/15709784/-biological-treatments-for-contaminated-soils-hydrocarbon-contamination-fungal-applications-in-bioremediation-treatment
#2
REVIEW
Carmen Martín Moreno, Aldo González Becerra, María José Blanco Santos
Bioremediation is a spontaneous or controlled process in which biological, mainly microbiological, methods are used to degrade or transform contaminants to non or less toxic products, reducing the environmental pollution. The most important parameters to define a contaminated site are: biodegradability, contaminant distribution, lixiviation grade, chemical reactivity of the contaminants, soil type and properties, oxygen availability and occurrence of inhibitory substances. Biological treatments of organic contaminations are based on the degradative abilities of the microorganisms...
September 2004: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/15108857/effects-of-lindane-on-the-photosynthetic-apparatus-of-the-cyanobacterium-anabaena-fluorescence-induction-studies-and-immunolocalization-of-ferredoxin-nadp-reductase
#3
Marta Bueno, Maria F Fillat, Reto J Strasser, Ronald Maldonado-Rodriguez, Nerea Marina, Henry Smienk, Carlos Gómez-Moreno, Francisco Barja
INTENTION, GOAL, SCOPE, BACKGROUND: Cyanobacteria have the natural ability to degrade moderate amounts of organic pollutants. However, when pollutant concentration exceeds the level of tolerance, bleaching of the cells and death occur within 24 hours. Under stress conditions, cyanobacterial response includes the short-term adaptation of the photosynthetic apparatus to light quality, named state transitions. Moreover, prolonged stresses produce changes in the functional organization of phycobilisomes and in the core-complexes of both photosystems, which can result in large changes in the PS II fluorescence yield...
2004: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/12920985/-biodegradability-of-the-components-of-natural-hydrocarbon-mixtures-previously-submitted-to-landfarming
#4
COMPARATIVE STUDY
G N Pucci, O H Pucci
The complex composition of the crude oil and the hydrocarbons that integrate the waste of the different stages of the oil industry turn this product a mixture that presents different difficulties for its elimination by biological methods. The objective of this paper was to study the biodegradation potential of autochthonous bacterial communities on hydrocarbons obtained from four polluted places and subjected to landfarming biorremediation system during a decade. The results showed a marked difference in biodegradability of the three main fractions of crude oil, aliphatic, aromatic, and polar fractions, obtained by column chromatography...
April 2003: Revista Argentina de Microbiología
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