Please use this identifier to cite or link to this item: https://doi.org/10.1007/s10531-004-0429-1
DC FieldValue
dc.titleEffect of a commercial alcohol ethoxylate surfactant (C 11-15E7) on biodegradation of phenanthrene in a saline water medium by Neptunomonas naphthovorans
dc.contributor.authorLi, J.-L.
dc.contributor.authorBai, R.
dc.date.accessioned2014-10-09T06:46:18Z
dc.date.available2014-10-09T06:46:18Z
dc.date.issued2005
dc.identifier.citationLi, J.-L., Bai, R. (2005). Effect of a commercial alcohol ethoxylate surfactant (C 11-15E7) on biodegradation of phenanthrene in a saline water medium by Neptunomonas naphthovorans. Biodegradation 16 (1) : 57-65. ScholarBank@NUS Repository. https://doi.org/10.1007/s10531-004-0429-1
dc.identifier.issn09239820
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/88786
dc.description.abstractBiodegradation of poorly soluble polycyclic aromatic hydrocarbons (PAHs) has been a challenge in bioremediation. In recent years, surfactant-enhanced bioremediation of PAH contaminants has attracted great attention in research. In this study, biodegradation of phenanthrene as a model PAHs solubilized in saline micellar solutions of a biodegradable commercial alcohol ethoxylate nonionic surfactant was investigated. The critical micelle concentration (CMC) of the surfactant and its solubilization capacity for phenanthrene were examined in an artificial saline water medium, and a type of marine bacteria, Neptunomonas naphthovorans, was studied for the biodegradation of phenanthrene solubilized in the surfactant micellar solutions of the saline medium. It is found that the solubility of phenanthrene in the surfactant micellar solutions increased linearly with the surfactant concentrations, but, at a fixed phenanthrene concentration, the biodegradability of phenanthrene in the micellar solutions decreased with the increase of the surfactant concentrations. This was attributed to the reduced bioavailability of phenanthrene, due to its increased solubilization extent in the micellar phase and possibly lowered mass transfer rate from the micellar phase into the aqueous phase or into the bacterial cells. In addition, an inhibitory effect of the surfactant on the bacterial growth at high surfactant concentrations may also play a role. It is concluded that the surfactant largely enhanced the solubilization of phenanthrene in the saline water medium, but excess existence of the surfactant in the medium should be minimized or avoided for the biodegradation of phenanthrene by Neptunomonas naphthovorans. © Springer 2005.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1007/s10531-004-0429-1
dc.sourceScopus
dc.subjectBiodegradation
dc.subjectMarine bacteria
dc.subjectMicellar solubilization
dc.subjectNonionic surfactant
dc.subjectPhenanthrene
dc.subjectSaline water medium
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.description.doi10.1007/s10531-004-0429-1
dc.description.sourcetitleBiodegradation
dc.description.volume16
dc.description.issue1
dc.description.page57-65
dc.description.codenBIODE
dc.identifier.isiut000226836400006
Appears in Collections:Staff Publications

Show simple item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

18
checked on Aug 20, 2019

WEB OF SCIENCETM
Citations

18
checked on Aug 20, 2019

Page view(s)

47
checked on Aug 17, 2019

Google ScholarTM

Check

Altmetric


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