Production, functional stability, and effect of rhamnolipid biosurfactant from Klebsiella sp. on phenanthrene degradation in various medium systems

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dc.contributor.authorAhmad, Zulfiqar
dc.contributor.authorZhang, Xuezhi
dc.contributor.authorImran, Muhammad
dc.contributor.authorZhong, Hua
dc.contributor.authorAndleeb, Shaista
dc.contributor.authorZulekha, Rabail
dc.contributor.authorLiu, Guansheng
dc.contributor.authorAhmad, Iftikhar
dc.contributor.authorCoulon, Frederic
dc.date.accessioned2020-11-02T17:05:27Z
dc.date.available2020-11-02T17:05:27Z
dc.date.issued2020-10-29
dc.description.abstractThe present study investigated the stability and efficacy of a biosurfactant produced by Klebsiella sp. KOD36 under extreme conditions and its potential for enhancing the solubilization and degradation of phenanthrene in various environmental matrices. Klebsiella sp. KOD36 produced a mono-rhamnolipids biosurfactant with a low critical micelle concentration (CMC) value. The biosurfactant was stable under extreme conditions (60 °C, pH 10 and 10% salinity) and could lower surface tension by 30% and maintained an emulsification index of > 40%. The emulsion index was also higher (17–43%) in the presence of petroleum hydrocarbons compared to synthetic surfactant Triton X-100. Investigation on phenanthrene degradation in three different environmental matrices (aqueous, soil-slurry and soil) confirmed that the biosurfactant enhanced the solubilization and biodegradation of phenanthrene in all matrices. The high functional stability and performance of the biosurfactant under extreme conditions on phenanthrene degradation show the great potential of the biosurfactant for remediation applications under harsh environmental conditions.en_UK
dc.identifier.citationAhmad Z, Zhang X, Imran M, et al., (2021) Production, functional stability, and effect of rhamnolipid biosurfactant from Klebsiella sp. on phenanthrene degradation in various medium systems. Ecotoxicology and Environmental Safety, Volume 207, January 2021, Article number 111514en_UK
dc.identifier.issn0147-6513
dc.identifier.urihttps://doi.org/10.1016/j.ecoenv.2020.111514
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/15957
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectMono-rhamnolipidsen_UK
dc.subjectKlebsiella sp.en_UK
dc.subjectBiodegradationen_UK
dc.subjectEmulsification indexen_UK
dc.subjectSurface tensionen_UK
dc.subjectHydrocarbonsen_UK
dc.titleProduction, functional stability, and effect of rhamnolipid biosurfactant from Klebsiella sp. on phenanthrene degradation in various medium systemsen_UK
dc.typeArticleen_UK

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