Effect of Alkaline Surface Modification and Carbonization on Biochemical Properties of Rice and Coffee Husks for Use in Briquettes and Fiber- Reinforced Plastics

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dc.contributor.authorYiga, Vianney Andrew
dc.contributor.authorLubwama, Michael
dc.contributor.authorOlupot, Peter Wilberforce
dc.date.accessioned2022-11-30T15:44:48Z
dc.date.available2022-11-30T15:44:48Z
dc.date.issued2019
dc.description.abstractEffects of alkaline surface modification and carbonization on biochemical properties of selected rice and coffee husk varieties in Uganda were studied. Alkali pre-treatment was done by washing the husks in NaOH at a 15:1 liquor ratio. Pre-treatment is used in biomass conversion to overcome chemical and structural difficulties. Carbonization resulted in production of bio-char. Results showed increased cellulose contents for both the husks and their bio-chars after pre-treatment with NaOH solution. Lignin and hemi-cellulose compositions were reduced after pre-treatment in NaOH solution. Bio-chars for all rice husk varieties showed an increase in lignin content after carbonization. Lignin contents for Robusta coffee husks also increased after carbonization. Cellulose content in bio-chars of both rice and coffee husks reduced drastically after carbonization. A simple regression model relating bulk density and biochemical composition was developed at an accuracy of 70%. Alkaline surface modification and carbonization effects on biochemical properties are due to their impact on the non-cellulosic material and hydrophobicity, respectively, on the fibers.en_US
dc.identifier.citationVianney Andrew Yiga, Michael Lubwama & Peter Wilberforce Olupot (2019): Effect of Alkaline Surface Modification and Carbonization on Biochemical Properties of Rice and Coffee Husks for Use in Briquettes and Fiber-Reinforced Plastics, Journal of Natural Fibers, DOI: 10.1080/15440478.2019.1642824en_US
dc.identifier.other10.1080/15440478.2019.1642824
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/5569
dc.language.isoenen_US
dc.publisherJournal of Natural Fibersen_US
dc.subjectBio-chemicalen_US
dc.subjectBriquettesen_US
dc.subjectBulk densityen_US
dc.subjectCoffee husksen_US
dc.subjectFiber-reinforced plasticsen_US
dc.subjectHemicelluloseen_US
dc.titleEffect of Alkaline Surface Modification and Carbonization on Biochemical Properties of Rice and Coffee Husks for Use in Briquettes and Fiber- Reinforced Plasticsen_US
dc.typeArticleen_US
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