Engineering design of an integrated sustainable process system for cassava biobased materials

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dc.check.entireThesisEntire Thesis Restricted
dc.check.opt-outNoen
dc.check.reasonThis thesis is due for publication or the author is actively seeking to publish this materialen
dc.contributor.advisorSousa Gallagher, Maria J.en
dc.contributor.advisorOliveira, Jorge C.en
dc.contributor.authorTumwesigye, Kashub S.
dc.contributor.funderNational Agricultural Research Organisation, Uganda.en
dc.date.accessioned2016-11-22T13:09:44Z
dc.date.issued2016
dc.date.submitted2016
dc.description.abstractCassava contributes significantly to biobased material development. Conventional approaches for its bio-derivative-production and application cause significant wastes, tailored material development challenges, with negative environmental impact and application limitations. Transforming cassava into sustainable value-added resources requires redesigning new approaches. Harnessing unexplored material source, and downstream process innovations can mitigate challenges. The ultimate goal proposed an integrated sustainable process system for cassava biomaterial development and potential application. An improved simultaneous release recovery cyanogenesis (SRRC) methodology, incorporating intact bitter cassava, was developed and standardized. Films were formulated, characterised, their mass transport behaviour, simulating real-distribution-chain conditions quantified, and optimised for desirable properties. Integrated process design system, for sustainable waste-elimination and biomaterial development, was developed. Films and bioderivatives for desired MAP, fast-delivery nutraceutical excipients and antifungal active coating applications were demonstrated. SRRC-processed intact bitter cassava produced significantly higher yield safe bio-derivatives than peeled, guaranteeing 16% waste-elimination. Process standardization transformed entire root into higher yield and clarified colour bio-derivatives and efficient material balance at optimal global desirability. Solvent mass through temperature-humidity-stressed films induced structural changes, and influenced water vapour and oxygen permeability. Sevenunit integrated-process design led to cost-effectiveness, energy-efficient and green cassava processing and biomaterials with zero-environment footprints. Desirable optimised bio-derivatives and films demonstrated application in desirable in-package O2/CO2, mouldgrowth inhibition, faster tablet excipient nutraceutical dissolutions and releases, and thymolencapsulated smooth antifungal coatings. Novel material resources, non-root peeling, zero-waste-elimination, and desirable standardised methodology present promising process integration tools for sustainable cassava biobased system development. Emerging design outcomes have potential applications to mitigate cyanide challenges and provide bio-derivative development pathways. Process system leads to zero-waste, with potential to reshape current style one-way processes into circular designs modelled on nature's effective approaches. Indigenous cassava components as natural material reinforcements, and SRRC processing approach has initiated a process with potential wider deployment in broad product research development. This research contributes to scientific knowledge in material science and engineering process design.en
dc.description.statusNot peer revieweden
dc.description.versionAccepted Version
dc.format.mimetypeapplication/pdfen
dc.identifier.citationTumwesigye, K. S. 2016. Engineering design of an integrated sustainable process system for cassava biobased materials. PhD Thesis, University College Cork.en
dc.identifier.endpage255en
dc.identifier.urihttps://hdl.handle.net/10468/3301
dc.languageEnglishen
dc.language.isoenen
dc.publisherUniversity College Corken
dc.rights© 2016, Kashub Steven Tumwesigye.en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/en
dc.subjectGreen processingen
dc.subjectWaste reductionen
dc.subjectBiopolymer derivativeen
dc.subjectPackaging filmen
dc.subjectDesirability optimisationen
dc.subjectStandardisationen
dc.subjectOptimal designen
dc.subjectProcess integrationen
dc.subjectSustainable systemen
dc.subjectWidened applicationen
dc.subjectBitter cassavaen
dc.thesis.opt-outfalse
dc.titleEngineering design of an integrated sustainable process system for cassava biobased materialsen
dc.typeDoctoral thesisen
dc.type.qualificationlevelDoctoral Degree (Structured)en
dc.type.qualificationnamePHD (Engineering)en
ucc.workflow.supervisorm.desousagallagher@ucc.ie
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