Bioremediation of naphthalene in water by Sphingomonas paucimobilis using new biodegradable surfactants based on poly (ɛ-caprolactone)

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Show simple item record San Miguel Arnanz, Verónica Peinado, Carmen Catalina, Fernando Abrusci Bernal, Concepcion 2017-05-04T10:08:12Z 2017-05-04T10:08:12Z 2009-03
dc.identifier.bibliographicCitation International Biodeterioration & Biodegradation, 2009, 63 (2), pp. 217-223.
dc.identifier.issn 0964-8305
dc.description.abstract New amphiphilic block surfactants ABA based on a central segment of polycaprolactone with different molecular composition were evaluated in the bioremediation of naphthalene in water by Sphingomonas paucimobilis and compared with sodium dodecyl sulphate as reference surfactant (SDS). Also the biodegradation of the new surfactants by bacteria, S. paucimobilis and a mixture of bacteria (Pseudomonas aureginosa, Bacillus subtilis, Bacillus amyloliquefaciens and Bacillus megaterium) was studied by indirect impedance technique and carbon dioxide determination. All the bacteria biodegraded in solution and micellar phase the central segment of PCL with mineralization rates in the range of 0.024–0.036 mg of CO₂ per day. S. paucimobilis biodegraded naphthalene in the presence of the new surfactants and GC analysis demonstrated that conversion to products started immediately after inoculum. In all the experiments, except for SDS, at 140 h of incubation time, the remaining naphthalene concentration was about 10% of the initial concentration. In contrast, the production of CO₂ was delayed 4–7 days and values around 75% of naphthalene mineralization degree were achieved in three weeks. The addition of PCL-surfactants, in solution and in micellar phase, not interfered in the naphthalene mineralization. These results have shown promising potential of these biodegradable PCL-surfactants in surfactant-enhanced remediation (SER) technology for removing residual organics from contaminated groundwater and soils.
dc.description.sponsorship The authors would like to thank the Plan Nacional I + D + I (Ministerio de Ciencia y Tecnología) for financial support (MAT2006-05979).
dc.format.extent 7
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.rights © Elsevier, 2009
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other Biodegradation
dc.subject.other Bioremediation
dc.subject.other Surfactants
dc.subject.other Polycaprolactone
dc.subject.other Pseudomonas
dc.subject.other Bacillus
dc.subject.other Indirect impedance technique
dc.subject.other Naphthalene
dc.title Bioremediation of naphthalene in water by Sphingomonas paucimobilis using new biodegradable surfactants based on poly (ɛ-caprolactone)
dc.type article
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. MAT2006-05979
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 217
dc.identifier.publicationissue 2
dc.identifier.publicationlastpage 223
dc.identifier.publicationtitle International Biodeterioration & Biodegradation
dc.identifier.publicationvolume 63
dc.identifier.uxxi AR/0000019795
dc.affiliation.dpto UC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Química
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Polímeros y Composites
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