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Sustainable deinking processes to recover post-industrial printed plastic films

2023-11-23Master thesis Open access
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datacite.subject.fosEngenharia e Tecnologia::Engenharia Mecânicapt_PT
dc.contributor.advisorGaspar, Marcelo Rudolfo Calvete
dc.contributor.advisorOliveira, Nelson Simões
dc.contributor.authorPimenta, Fernando Bozzola
dc.date.accessioned2024-02-28T14:25:22Z
dc.date.available2024-02-28T14:25:22Z
dc.date.issued2023-11-23
dc.description.abstractThe current commercial deinking technology uses non-bio-based surfactants and nonrenewable surfactants, which are harmful to the environment. Therefore, the main objective of current research is to develop an environmentally sustainable process for ink removal on printed post-industrial flexible plastic films using bio-based surfactants. This process focuses on obtaining a deinked plastic that may be reprinted, thus avoiding for inappropriate disposal or reprocessing problems. The value increase of upcycling such post-industrial waste makes it possible to match the quality of the virgin plastic, which is key to carrying out an effective cost analysis of recycled plastic when compared to the new plastic films. In this research, the use of aqueous bio-based surfactant solutions for plastic film deinking was analyzed and discussed, since these surfactants are more environmentally friendly. Dedicated laboratory deinking procedures were undertaken with transparent polyethylene films printed by flexography with different conditions. In the end, a dedicated design proposal for a prototype to industrially deink plastic films printed was presented and discussed.pt_PT
dc.description.sponsorshipCOMPETE 2020 (Lisboa, PT) GRANT_NUMBER: POCI-01-0247- FEDER-046091pt_PT
dc.identifier.tid203539753pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.8/9494
dc.language.isoengpt_PT
dc.subjectPlastic film recyclingpt_PT
dc.subjectDeinkingpt_PT
dc.subjectSolvent-based ink removalpt_PT
dc.subjectCationic surfactantpt_PT
dc.subjectBiobased surfactantspt_PT
dc.titleSustainable deinking processes to recover post-industrial printed plastic filmspt_PT
dc.typemaster thesis
dspace.entity.typePublication
rcaap.rightsopenAccesspt_PT
rcaap.typemasterThesispt_PT
thesis.degree.nameMestrado em Engenharia para Fabricação Digital Diretapt_PT

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