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

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dc.contributor.advisor Sousa Gallagher, Maria J. en
dc.contributor.advisor Oliveira, Jorge C. en Tumwesigye, Kashub S. 2016-11-22T13:09:44Z 2016 2016
dc.identifier.citation Tumwesigye, K. S. 2016. Engineering design of an integrated sustainable process system for cassava biobased materials. PhD Thesis, University College Cork. en
dc.identifier.endpage 255 en
dc.description.abstract Cassava 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.format.mimetype application/pdf en
dc.language English en
dc.language.iso en en
dc.publisher University College Cork en
dc.rights © 2016, Kashub Steven Tumwesigye. en
dc.rights.uri en
dc.subject Green processing en
dc.subject Waste reduction en
dc.subject Biopolymer derivative en
dc.subject Packaging film en
dc.subject Desirability optimisation en
dc.subject Standardisation en
dc.subject Optimal design en
dc.subject Process integration en
dc.subject Sustainable system en
dc.subject Widened application en
dc.subject Bitter cassava en
dc.title Engineering design of an integrated sustainable process system for cassava biobased materials en
dc.type Doctoral thesis en
dc.type.qualificationlevel Doctoral Degree (Structured) en
dc.type.qualificationname PHD (Engineering) en
dc.internal.availability Full text available en
dc.description.version Accepted Version
dc.contributor.funder National Agricultural Research Organisation, Uganda. en
dc.description.status Not peer reviewed en Process & Chemical Engineering en
dc.check.reason This thesis is due for publication or the author is actively seeking to publish this material en
dc.check.opt-out No en
dc.thesis.opt-out false
dc.check.entireThesis Entire Thesis Restricted
dc.internal.conferring Autumn 2016 en

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© 2016, Kashub Steven Tumwesigye. Except where otherwise noted, this item's license is described as © 2016, Kashub Steven Tumwesigye.
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