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Effect of dibenzothiophene and its alkylated derivatives on coupled desulfurization and carotenoid production by Gordonia alkanivorans strain 1B

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dc.contributor.authorSilva, Tiago
dc.contributor.authorAlves, Luís
dc.contributor.authorPaixão, Susana M.
dc.date.accessioned2020-09-22T14:04:51Z
dc.date.available2023-12-01T01:30:30Z
dc.date.issued2020
dc.description.abstractABSTRACT: Nowadays, the production of green transportation fuels is essential for a healthy life and environment. Effective and complete removal of organosulfur recalcitrant compounds from fuel oils is crucial to meet the stringent requirements of sulfur standards. However, the industry's solution (Hydrodesulfurization, HDS) is not effective in the removal of complex sulfur heterocyclic hydrocarbons. Thus, the development of more efficient and ecofriendly/sustainable desulfurization methods is critical, as either an alternative or a complement to HDS, foreseeing the production of ultra-low sulfur fuels (ULSF). Among the desulfurization techniques available, microbial desulfurization of organosulfur hydrocarbons (biodesulfurization, BDS) is attracting great attention. BDS is carried out at mild operation conditions, making it energetically cheaper and more ecofriendly, since it does not require hydrogen and produces far less greenhouse gases emission than HDS. In this context, the behavior of Gordonia alkanivorans strain 1B, a desulfurizing bacterium and hyper-pigment producer, was evaluated in the presence of four sulfur sources common in fuel oils: dibenzothiophene (DBT); 4-mDBT; 4,6-dmDBT and 4,6deDBT (single/mixed), in terms of both desulfurization rate and overall carotenoid production. Simultaneously, the influence of the carbon source used (fructose vs glucose) on the overall effectiveness of the coupled bioprocesses was also assessed. The results obtained highlight the potential of strain 1B to desulfurize all the tested recalcitrant compounds and simultaneously produce carotenoids. However, the highest BDS values were observed for 4,6-deDBT (5.75 mu mol/g (DCW)/h) and for the mix of DBTs (5.20 mu mol/g (DCW)/h), when fructose was used as carbon source. Indeed, when the mixture of DBTs ("model oil surrogate") was desulfurized by cells growing in fructose both desulfurization rate and total pigments amount were higher than those observed for glucose growing cells. Moreover, under these conditions, the strain 1B was able to produce high added-value carotenoids, namely astaxanthin, lutein and canthaxanthin. Hence, these results are promising when aiming to achieve a scale-up scenario. In fact, the inclusion of the production of high added-value products within a BDS process targeting ULSF may be a sustainable way to turn its scale-up economically viable.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSilva, Tiago P... [et.al.] - Effect of dibenzothiophene and its alkylated derivatives on coupled desulfurization and carotenoid production by Gordonia alkanivorans strain 1B. In: Journal of Environmental Management, 2020, Vol. 270, article nº 110825pt_PT
dc.identifier.doi10.1016/j.jenvman.2020.110825pt_PT
dc.identifier.issn0301-4797
dc.identifier.urihttp://hdl.handle.net/10400.9/3307
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationFCT - PTDC/EAM-AMB/30975/2017pt_PT
dc.relationFCT - SFRH/BD/104977/2014pt_PT
dc.relation(BBRI) -LISBOA-01-0145-FEDER-022059pt_PT
dc.relation.publisherversionhttps://doi.org/10.1016/j.jenvman.2020.110825pt_PT
dc.subjectBiodesulfurizationpt_PT
dc.subjectGordonia alkanivoranspt_PT
dc.subjectDibenzothiophenept_PT
dc.subjectCarotenoidspt_PT
dc.subjectFossil fuelspt_PT
dc.titleEffect of dibenzothiophene and its alkylated derivatives on coupled desulfurization and carotenoid production by Gordonia alkanivorans strain 1Bpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleJournal of Environmental Managementpt_PT
oaire.citation.volume270pt_PT
person.familyNameSilva
person.familyNameAlves
person.familyNamePaixão
person.givenNameTiago
person.givenNameLuís
person.givenNameSusana M.
person.identifier.ciencia-idE418-9EE4-9BB4
person.identifier.ciencia-id561B-53A5-7359
person.identifier.ciencia-id7918-C133-C5FB
person.identifier.orcid0000-0003-0120-557X
person.identifier.orcid0000-0001-6245-775X
person.identifier.orcid0000-0003-0955-4467
person.identifier.scopus-author-id6701310833
person.identifier.scopus-author-id6603112228
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication4c11e382-9f04-42cc-9ca0-a4ade44298f1
relation.isAuthorOfPublicationc07d7af9-191c-4bcc-af5f-255b7fb52060
relation.isAuthorOfPublicationb763d40e-827e-4b6b-949c-d6c8a7166cc5
relation.isAuthorOfPublication.latestForDiscoveryc07d7af9-191c-4bcc-af5f-255b7fb52060

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