Bioremediation
Mostrando 25-36 de 282 artigos, teses e dissertações.
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25. Action of Canavalia ensiformis in remediation of contaminated soil with sulfentrazone
ABSTRACT This study evaluated the jack bean (Canavalia ensiformis) as a potential remediator of sulfentrazone in the soil. The experiment was conducted under field conditions in a complete randomised block design. The treatments consisted of soils with and without herbicide application as well as the absence and presence of C. ensiformis cultivation associat
Bragantia. Publicado em: 15/05/2017
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26. Influence of toluene and salinity on biosurfactant production by Bacillus sp.: scale up from flasks to a bench-scale bioreactor
ABSTRACT To select the best biosurfactant producer, Pseudomonas putida, Bacillus megatherium, Bacillus licheniformis and Bacillus subtilis were cultured in flasks on media with different salinity [low salinity (LS), Bushnell-Haas (BH) and artificial sea water (SW) media] supplemented or not with toluene as a model pollutant. Toluene inhibited the growth of a
Braz. J. Chem. Eng.. Publicado em: 2017-04
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27. EFFICIENCY OF THE EARTHWORM Eisenia fetida UNDER THE EFFECT OF ORGANIC MATTER FOR BIOREMEDIATION OF SOILS CONTAMINATED WITH CADMIUM AND CHROMIUM
Abstract The use of earthworms to bioremediate soil results in decreasing the pollutant concentration through a bioaccumulation mechanism of the contaminants in the earthworm's body. The present work is an empirical study that was carried out on soils contaminated with chromium and cadmium. Organic matter in the amount of 5% and 9% of soil weight was added.
Braz. J. Chem. Eng.. Publicado em: 2016-12
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28. Enzymatic potential of heterotrophic bacteria from a neutral copper mine drainage
Abstract Copper mine drainages are restricted environments that have been overlooked as sources of new biocatalysts for bioremediation and organic syntheses. Therefore, this study aimed to determine the enzymatic activities (esterase, epoxide hydrolase and monooxygenase) of 56 heterotrophic bacteria isolated from a neutral copper mine drainage (Sossego Mine,
Braz. J. Microbiol.. Publicado em: 2016-12
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29. Evaluation and enhancement of heavy metals bioremediation in aqueous solutions by Nocardiopsis sp. MORSY1948, and Nocardia sp. MORSY2014
ABSTRACT An analysis of wastewater samples collected from different industrial regions of Egypt demonstrated dangerously high levels of nickel (0.27-31.50 mg L-1), chromium (1.50-7.41 mg L-1) and zinc (1.91-9.74 mg L-1) in the effluents. Alarmingly, these heavy metals are among the most toxic knownones to humans and wildlife. Sixty-nine Actinomycete isolates
Braz. J. Microbiol.. Publicado em: 2016-09
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30. Soil bacteria showing a potential of chlorpyrifos degradation and plant growth enhancement
ABSTRACT Background: Since 1960s, the organophosphate pesticide chlorpyrifos has been widely used for the purpose of pest control. However, given its persistence and toxicity towards life forms, the elimination of chlorpyrifos from contaminated sites has become an urgent issue. For this process bioremediation is the method of choice. Results: Two bacterial
Braz. J. Microbiol.. Publicado em: 2016-09
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31. Preliminary studies of new strains of Trametes sp. from Argentina for laccase production ability
Abstract Oxidative enzymes secreted by white rot fungi can be applied in several technological processes within the paper industry, biofuel production and bioremediation. The discovery of native strains from the biodiverse Misiones (Argentina) forest can provide useful enzymes for biotechnological purposes. In this work, we evaluated the laccase and manganes
Braz. J. Microbiol.. Publicado em: 2016-06
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32. Sphingomonas from petroleum-contaminated soils in Shenfu, China and their PAHs degradation abilities
Abstract Members of the Sphingomonas genus are often isolated from petroleum-contaminated soils due to their unique abilities to degrade polycyclic aromatic hydrocarbons (PAHs), which are important for in situ bioremediation. In this study, a combined phenotypic and genotypic approach using streptomycin-containing medium and Sphingomonas -specific PCR was de
Braz. J. Microbiol.. Publicado em: 2016-06
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33. Response of Rhodococcus erythropolis strain IBBPo1 to toxic organic solvents
Abstract Recently, there has been a lot of interest in the utilization of rhodococci in the bioremediation of petroleum contaminated environments. This study investigates the response of Rhodococcus erythropolis IBBPo1 cells to 1% organic solvents (alkanes, aromatics). A combination of microbiology, biochemical, and molecular approaches were used to examine
Braz. J. Microbiol.. Publicado em: 2015-12
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34. Los halos de inhibición en la remediación de suelos amazónicos contaminados con petróleo
Abstract We analyze the history of bioremediation of soils contaminated with petroleum in the Ecuadorian Amazon from 1994 to 2014. Although there were some technoscientific “successes,” we argue that the opportunity to develop a process of scientific excellence was thwarted by lack of an institutional framework and the political will to oversee research
Hist. cienc. saude-Manguinhos. Publicado em: 2015-12
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35. Carbazole degradation in the soil microcosm by tropical bacterial strains
In a previous study, three bacterial strains isolated from tropical hydrocarbon-contaminated soils and phylogenetically identified as Achromobacter sp. strain SL1, Pseudomonas sp. strain SL4 and Microbacterium esteraromaticum strain SL6 displayed angular dioxygenation and mineralization of carbazole in batch cultures. In this study, the ability of these isol
Braz. J. Microbiol.. Publicado em: 27/10/2015
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36. Characterization of Lipase from Bacillus subtilisI-4 and Its Potential Use in Oil Contaminated Wastewater
ABSTRACTA lipase producing bacterium was isolated from oil contaminated effluents of various industries from Sheikhupura Road, Pakistan, and, on the basis of biochemical and 16S rRNA ribotyping, was identified asBacillus subtilis. The optimum temperature and pH for the growth of the culture were 37ºC and 7.0, respectively.B. subtilis I-4 had a lag phase of
Braz. arch. biol. technol.. Publicado em: 2015-10