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Undergraduate Theses

Permanent URI for this collectionhttps://hdl.handle.net/20.500.14578/5

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Department: search.filters.department.Institute of Computing Engineering and TechnologyKeyword: search.filters.keyword.Starch

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    Quality assessment of non-carbonized banana peduncle briquettes as affected by starch-based binders from different banana wastes
    Montecalvo, Jane B. (Davao del Sur State College, 2024-06)
    The study was conducted to assess the quality of non-carbonized briquettes from banana peduncle with starch-based binders from different banana wastes. The study was conducted using a Complete Randomized Design, with four treatments and three replications. The primary raw material utilized for the production of non-carbonized biomass briquettes was the banana peduncle with banana pseudo-stem starch, and banana peel starch as binder in different proportion and cassava starch (T1), 100% banana pseudo-stem starch (T2), 50% banana pseudo-stem starch and 50% banana peel starch (T3), and 100% banana peel starch (T4). The density, volatile matter, durability, ash content, carbon content, calorific of heating value, and burning rate, as well as the cost per unit produce of the briquettes, were measured and evaluated using One-Way Analysis of Variance at significance levels of 1% and 5%. Significant differences were noted in the average durability, ash content, fixed carbon content, calorific or heating value, and burning rate across the different treatments. There were no significant differences in the average density and volatile matter between the different treatments. Results revealed that the density of the briquettes from Treatment 1 to 4 met the recommended value. In T2, the briquette observed was high in density, durability, ash content, calorific value, and burning rate but low in fixed carbon content. However, in T4, it was observed that it has a high volatile matter but low in terms of durability. Cost analysis indicated that the cost per kilogram of the briquettes produced from all treatments was cheaper in comparison to the commercially available briquettes.
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    Processing of paperboard from the fiber of torch ginger (Etlingera elatior) stem at different levels of cassava starch as binder
    Blasquez, Irenella A. (Davao del Sur State College, 2024-05)
    This study examined the potential of torch ginger (Etlingera elatior) stem fiber as an alternative source of fiber added with different levels of cassava starch as binder for paperboard production. The study was established with three (3) treatments and each is replicated thrice. The treatments were: Treatment 1: 240 grams cassava starch, Treatment 2: 320 grams cassava starch, and Treatment 3: 480 grams cassava starch. Using a molder, the pulp was molded and sundried until the desired weight was achieved. The paperboards were then tested in terms of odor, paper whiteness, smoothness/texture, grammage, water absorbency, and pH level. The data collected was statistically analyzed using one-way analysis of variance (ANOVA) at 1% and 5% levels of significance. Statistically, results showed significant difference in the odor, paper whiteness, smoothness of texture, or water absorbency of the produced paperboard among the treatments, while the ANOVA results for grammage showed a significant difference. Moreover, the pH level was tested in a composite manner, with pH values ranging from 8.7-9.0 and Treatment 1 having the lowest unit production cost analysis which if PHP 14.46 per piece of paperboard. Thus, torch ginger (E. elatior) stem fiber is a potential material for paperboard production.