Biosurfactant produced by Serrati sp. and its application in bioremediation enhancement of oil sludge

dc.contributor.authorGidudu, Brian
dc.contributor.authorMudenda, Emmanuel
dc.contributor.authorChirwa, Evans M.N.
dc.date.accessioned2021-06-18T13:18:55Z
dc.date.available2021-06-18T13:18:55Z
dc.date.issued2020
dc.description.abstractThe petroleum industry is one of the most pivotal sectors of the global economy but with it comes the production of atrocious amounts of waste especially during production and refining of the oil. Oil sludge which is an example of such waste has been categorized as hazardous because it is composed of asphaltenes, heavy metals and heavy hydrocarbons such as long-chain paraffins among others. The bioremediation of hydrocarbons in this waste is limited by low availability; biosurfactants were therefore applied to evaluate their efficacy in promoting the bioremediation process. The biosurfactants were produced by a hydrocarbondegrading bacterium identified by 16S ribosomal RNA as Serrati sp. Biosurfactants were applied to the batch reactors containing oil sludge in different concentrations of 7 g/L, 14 g/L, and 28 g/L. The biosurfactants enhanced oil sludge biodegradation by 23.38%, 70.28%, and 55.6% respectively in 14 days. The increase in biosurfactant concentration showed a subsequent increase in microbial growth after every biosurfactant amendment due to the increase in bioavailability of the pollutants to the microbes which is utilized as the carbon and energy source. The biosurfactants were characterized by Fourier-transform infrared spectroscopy and Thin Layer chromatography showing the presence of amino acids. The biosurfactant produced by the hydrocarbon-degrading bacteria of Serratia sp. SA1 showed great potential in improving the bioremediation of recalcitrant hydrocarbons in the oil sludge and can, therefore, be used as an alternative to chemical surfactants.en_ZA
dc.description.departmentChemical Engineeringen_ZA
dc.description.librarianpm2021en_ZA
dc.description.sponsorshipThe National Research Foundation (NRF_DST)en_ZA
dc.description.urihttps://www.cetjournal.it/index.php/ceten_ZA
dc.identifier.citationGidudu B., Mudenda E., Chirwa E.M., 2020, Biosurfactant Produced by Serrati Sp. and Its Application in Bioremediation Enhancement of Oil Sludge, Chemical Engineering Transactions, 79, 433-438. DOI:10.3303/CET2079073.en_ZA
dc.identifier.issn2283-9216 (online)
dc.identifier.other10.3303/CET2079073
dc.identifier.urihttp://hdl.handle.net/2263/80375
dc.language.isoenen_ZA
dc.publisherItalian Association of Chemical Engineeringen_ZA
dc.rights© 2020, AIDIC Servizi S.r.l.en_ZA
dc.subjectPetroleumen_ZA
dc.subjectBiosurfactanten_ZA
dc.subjectSerrati spen_ZA
dc.subjectBioremediation Enhancementen_ZA
dc.subjectOil sludgeen_ZA
dc.titleBiosurfactant produced by Serrati sp. and its application in bioremediation enhancement of oil sludgeen_ZA
dc.typeArticleen_ZA

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