Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/88307
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dc.contributorDepartment of Applied Biology and Chemical Technologyen_US
dc.creatorLiu, SYen_US
dc.creatorLeung, MMLen_US
dc.creatorFang, JKen_US
dc.creatorChua, SLen_US
dc.date.accessioned2020-10-27T06:29:33Z-
dc.date.available2020-10-27T06:29:33Z-
dc.identifier.issn1385-8947en_US
dc.identifier.urihttp://hdl.handle.net/10397/88307-
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rights© 2020 Elsevier B.V. All rights reserved.en_US
dc.rights© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.en_US
dc.rightsThe following publication Liu, S. Y., Leung, M. M. -., Fang, J. K. -., & Chua, S. L. (2021). Engineering a microbial ‘trap and release’ mechanism for microplastics removal. Chemical Engineering Journal, 404, 127079 is available at https://dx.doi.org/10.1016/j.cej.2020.127079.en_US
dc.subjectMicroplasticsen_US
dc.subjectPseudomonas aeruginosaen_US
dc.subjectBiofilmsen_US
dc.subjectBioaccumulationen_US
dc.subjectExopolymeric substancesen_US
dc.titleEngineering a microbial ‘trap and release’ mechanism for microplastics removalen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.volume404en_US
dc.identifier.doi10.1016/j.cej.2020.127079en_US
dcterms.abstractPlastics are discarded and accumulated in the environment at an alarming rate. However, their resistance to biodegradation allows them to persist in the environment for prolonged durations. While large plastics are easier to remove, microplastic particles from cosmetics or fragments from larger pieces are extremely difficult to remove from the environment. Furthermore, current techniques such as filters poorly retain microplastics or require harsh chemical treatments in wastewater treatment plants. Hence, microplastics enter the natural environment easily even after effluent treatments, thereby endangering aquatic life and humans who consume seafood. It is imperative to develop sustainable bioaggregation processes to trap microplastics quickly for easier removal from the environment. Here, we showed that microplastics can be trapped and aggregated in the sticky exopolymeric substances (EPS) produced by biofilms. As a proof-of-concept, we engineered a bacterial biofilm with a ‘capture-release mechanism’, whose EPS can first cause bioaggregation of microplastics for easier isolation, followed by an inducible biofilm dispersal mechanism that releases trapped microplastics for downstream resource recovery. We also demonstrated the potential application of the engineered biofilm in mitigating microplastics pollution in seawater samples collected in the vicinity of a sewage outfall. This capture-and-release approach should prove widely applicable to other micropollutants or biofilm-enabled catalysis.en_US
dcterms.abstractPlease refer "Graphical abstract: Schematic illustration of ‘capture-and-release’ mechanism of engineered P. aeruginosa." to publisher pdf.en_US
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationChemical engineering journal, 15 Jan. 2021, v. 404, 127079en_US
dcterms.isPartOfChemical engineering journalen_US
dcterms.issued2021-01-15-
dc.identifier.artn127079en_US
dc.description.validate202010 bcrcen_US
dc.description.oaAccepted Manuscripten_US
dc.identifier.FolderNumbera0491-n01, a0810-n03-
dc.description.pubStatusPublisheden_US
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