Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleBTEX biodegradation by bacteria from effluents of petroleum refinerypt_BR
dc.contributor.authorMazzeo, DECpt_BR
dc.contributor.authorLevy, CEpt_BR
dc.contributor.authorde Angelis, DDpt_BR
dc.contributor.authorMann-Morales, MApt_BR
unicamp.authorChristofoletti Mazzeo, Dania Elisa Mann-Morales, Maria Aparecida Univ Estadual Paulista, Inst Biociencias, Dept Biol, BR-13506900 Rio Claro, SP, Brazilpt_BR
unicamp.authorLevy, Carlos Emilio State Univ Campinas UNICAMP, Fac Med Sci, Dept Clin Pathol, BR-13081970 Campinas, SP, Brazilpt_BR
unicamp.authorde Angelis, Dejanira de Franceschi Univ Estadual Paulista, Inst Biosci, Dept Biochem & Microbiol, BR-13506900 Rio Claro, SP, Brazilpt_BR
dc.subjectAllium cepapt_BR
dc.subjectHTC cellspt_BR
dc.subjectPseudomonas putidapt_BR
dc.subject.wosSubstrate Interactionspt_BR
dc.subject.wosContaminated Groundwaterpt_BR
dc.description.abstractGroundwater contamination with benzene, toluene, ethylbenzene and xylene (BTEX) has been increasing, thus requiring an urgent development of methodologies that are able to remove or minimize the damages these compounds can cause to the environment. The biodegradation process using microorganisms has been regarded as an efficient technology to treat places contaminated with hydrocarbons, since they are able to biotransform and/or biodegrade target pollutants. To prove the efficiency of this process, besides chemical analysis, the use of biological assessments has been indicated. This work identified and selected BTEX-biodegrading microorganisms present in effluents from petroleum refinery, and evaluated the efficiency of microorganism biodegradation process for reducing genotoxic and mutagenic BTEX damage through two test-systems: Allium cepa and hepatoma tissue culture (HTC) cells. Five different non-biodegraded BTEX concentrations were evaluated in relation to biodegraded concentrations. The biodegradation process was performed in a BOO Trak Apparatus (HACH) for 20 days, using microorganisms pre-selected through enrichment. Although the biodegradation usually occurs by a consortium of different microorganisms, the consortium in this study was composed exclusively of five bacteria species and the bacteria Pseudomonas putida was held responsible for the BTEX biodegradation. The chemical analyses showed that BTEX was reduced in the biodegraded concentrations. The results obtained with genotoxicity assays, carried out with both A. cepa and HTC cells, showed that the biodegradation process was able to decrease the genotoxic damages of BTEX. By mutagenic tests, we observed a decrease in damage only to the A. cepa organism. Although no decrease in mutagenicity was observed for HTC cells, no increase of this effect after the biodegradation process was observed either. The application of pre-selected bacteria in biodegradation processes can represent a reliable and effective tool in the treatment of water contaminated with BTEX mixture. Therefore, the raw petroleum refinery effluent might be a source of hydrocarbon-biodegrading microorganisms. (c) 2010 Elsevier B.A. All rights
dc.relation.ispartofScience Of The Total Environmentpt_BR
dc.relation.ispartofabbreviationSci. Total Environ.pt_BR
dc.publisherElsevier Science Bvpt_BR 15pt_BR
dc.identifier.citationScience Of The Total Environment. Elsevier Science Bv, v. 408, n. 20, n. 4334, n. 4340, 2010.pt_BR
dc.sourceWeb of Sciencept_BR
unicamp.cruespUNESP USPpt_BR
dc.description.sponsorshipUniversidade Estadual Paulista (UNESP) [PRH-05]pt_BR
dc.description.sponsorshipRio Claro, SP, Brazilpt_BR
dc.description.sponsordocumentnumberUniversidade Estadual Paulista (UNESP) [PRH-05]pt
dc.description.provenanceMade available in DSpace on 2014-11-15T01:03:43Z (GMT). No. of bitstreams: 1 WOS000281931500007.pdf: 346181 bytes, checksum: 44a976a870bd64c3f066a8b714476c88 (MD5) Previous issue date: 2010en
dc.description.provenanceMade available in DSpace on 2015-11-26T17:18:09Z (GMT). No. of bitstreams: 2 WOS000281931500007.pdf: 346181 bytes, checksum: 44a976a870bd64c3f066a8b714476c88 (MD5) WOS000281931500007.pdf.txt: 45457 bytes, checksum: 54b6242c5fa854ee4a383ade6ccbb542 (MD5) Previous issue date: 2010en
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
WOS000281931500007.pdf338.07 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.