Undergraduate Theses
Permanent URI for this collectionhttps://hdl.handle.net/20.500.14578/5
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Item Quality assessment of non-carbonized banana peduncle briquettes as affected by starch-based binders from different banana wastesMontecalvo, 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.Item Strength analysis of bioplastic made from cardava banana peel starch reinforced with different chitin-based materialOrdaneza, Angel Mae C. (Davao del Sur State College, 2024-06)This study conducted to evaluate the flammability, biodegradability, and tensile strength of the bioplastic made from cardava banana peel starch and different chitin-based material. The experimental samples were laid in complete randomized design (CRD) with three treatments, namely; T1 (Commercial), T2 (Eggshell) and T3 (Golden Apple Snail Shell) and each was replicated three times. The data gathered was analyzed using One-way ANOVA and LSD at 5% level of significance. Based on the result, T3 has the highest mean flammability and biodegradability value of 3.35 mm/sec and 77.04% respectively, followed by T2 (3.09 mm/sec and 66.62%} and T1 (2.74% mm/sec and 20.39%) that has the lowest mean flammability and biodegradability value. Acid solubility results revealed that Treatment 1 has the highest acid solubility with the value of 7.53% followed by Treatment 2 with 6.8% and Treatment 3 with 5.76% that has the lowest acid solubility. In the tensile strength, Treatment 2 has the highest tensile strength with the value of 7.12074 MPa followed by T3 (6.8932 MPa) and T1 (5.87459 MPa) which has the lowest tensile strength value. The ANOVA results revealed that there's a highly significant difference in the flammability and biodegradability among the means of the three treatments. In general, the results revealed that different chitin-based materials (particularly eggshell and golden apple snail) and cardava banana peel starch can be used to make bioplastics given that they exceed the flammable standard, have excellent biodegradability, low solubility, and has high tensile strength. Furthermore, it is produced from waste materials, decreasing the threat of environmental pollution.