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https://hdl.handle.net/1822/73486
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Campo DC | Valor | Idioma |
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dc.contributor.author | Silva, Ana Rita | por |
dc.contributor.author | Carvalho, Ana Rita Castro | por |
dc.contributor.author | Machado, Raul | por |
dc.contributor.author | Pereira, M. Alcina | por |
dc.date.accessioned | 2021-06-29T11:11:04Z | - |
dc.date.issued | 2021-06-15 | - |
dc.date.submitted | 2021-03 | - |
dc.identifier.citation | Silva, Ana Rita; Castro, Rita; Machado, Raul; Pereira, M. Alcina, Dissolved oxygen concentration as a strategy to select type and composition of bacterial storage lipids produced during oilfield produced water treatment. Environmental Technology & Innovation, 23(101693), 2021 | por |
dc.identifier.issn | 2352-1864 | por |
dc.identifier.uri | https://hdl.handle.net/1822/73486 | - |
dc.description.abstract | Oilfield produced water (PW) management and treatment represents a significant cost to oil producers. Alcanivorax borkumensis is a marine bacteria capable of converting hydrocarbons into storage lipids, currently of great interest as raw materials for biofuel or oleochemical industries. In this study, the effect of dissolved oxygen (DO) concentration on the production of storage compounds by A. borkumensis SK2 was investigated in a sequencing batch airlift reactor treating saline oilfield produced water (PW). Intracellular lipids accumulation decreased from 0.74 g/g cellular dry weight (CDW) (78 mg/L O2) to 0.51 g/g CDW under 23 mg/L O2 and 0.45 g/g CDW during alternated DO concentrations of 78/12 mg/L O2 (famine/feast stage). Triacylglycerols were the main lipids accumulated for DO of 78 and 23 mg/L O2. During alternated DO conditions, accumulation of polyhydroxyalkanoates (0.41 g/g CDW) was observed. Extracellular lipids production were mainly wax esters and not significantly affected by DO concentration. Fatty acid (FA) composition and relative proportions of saturated and unsaturated FA in the produced compounds was also affected by oxygen availability. The obtained results show that selection of DO concentration during PW treatment can be used as a strategy to direct bacterial metabolism to production of a particular compound of interest. Hydrocarbon removal efficiencies in the range of 90%96% were achieved showing that is possible to reduce aeration costs without compromising PW treatment and concomitant production of valuable compounds. | por |
dc.description.sponsorship | This work was supported by the Portuguese Foundation for Science and Technology (FCT I.P.) and the European Regional Development Fund (ERDF) under the scope of project SaltOil+ (POCI-01-0145-FEDER-030180) (Portugal 2020, COMPETE 2020) . The author also acknowledge FCT I.P. support through the strategic programmes UID/BIO/04469/2019, UIDB/04469/2020 and UID/BIA/04050/2019; and by the BioTecNorte operation (NORTE-01-0145-FEDER-000004) funded by the European Regional Development Fund under the scope of Norte2020Programa Operacional Regional do Norte. Raul Machado acknowledges FCT I.P. for funding in the scope of the Scientific Employment Stimulus instrument (CEECIND/00526/2018) . Research of Rita M. Silva was supported by PhD grant SFRH/BD/116154/2016, funded by FCT I.P. and European Social Fund (EUESF, Portugal 2020, PORNORTE). | eng |
dc.language.iso | eng | por |
dc.publisher | Elsevier BV | por |
dc.relation | info:eu-repo/grantAgreement/FCT/CEEC IND 2018/CEECIND%2F00526%2F2018%2FCP1581%2FCT0021/PT | - |
dc.relation | info:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F116154%2F2016/PT | - |
dc.rights | restrictedAccess | por |
dc.subject | Dissolved oxygen | por |
dc.subject | Produced water | por |
dc.subject | Neutral lipids | por |
dc.subject | Polyhydroxyalkanoates | por |
dc.subject | Alcanivorax borkumensis | por |
dc.title | Dissolved oxygen concentration as a strategy to select type and composition of bacterial storage lipids produced during oilfield produced water treatment | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S2352186421003412 | por |
dc.comments | CEB54481 | por |
oaire.citationIssue | 101693 | por |
oaire.citationConferencePlace | Netherlands | - |
oaire.citationVolume | 23 | por |
dc.date.updated | 2021-06-28T17:12:23Z | - |
dc.identifier.doi | 10.1016/j.eti.2021.101693 | por |
dc.date.embargo | 10000-01-01 | - |
dc.subject.fos | Engenharia e Tecnologia::Biotecnologia Ambiental | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | - |
dc.subject.wos | Science & Technology | por |
sdum.journal | Environmental Technology and Innovation | - |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
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document_54481_1.pdf Acesso restrito! | 1,18 MB | Adobe PDF | Ver/Abrir |