Browsing by Author "Ambali, I.O."

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    CHARACTERIZATION OF BRIQUETTES FUEL PRODUCED FROM ADMIXTURE OF COCONUT COIR AND SAWDUST PARTICLES USING STARCH GEL AS A BINDER
    (Faculty of Engineering andTechnology, University of Ilorin, 2026) Ambali, I.O.; Shuaib-Babata, Y.L.; Busari, Y.O.; Issa, A.M.; Ajao, K.S.; Popoola, O. T.
    Characterization of briquettes produced from admixture of coconut coir and sawdust using cassava starch as a binder was studied in this study. The materials were locally sourced and processed to produce briquette samples of different proportions using appropriate ASTM standards guidelines. The physical parameters (such as moisture content, density, relaxed density and shattered index) were investigated; while the examined combustion properties included: ash content, percentage fixed carbon, percentage volatile matter, and heating value. The results showed the moisture content of the sample to be between 6.87 and 7.77%, with sample A (100cc:0s) and D (60c:40s) having highest and lowest value respectively. The samples’ shattered index ranged between 0.7134 and 0.9962%.Sample A and B exhibited the highest and lowest shattered index value respectively. Sample E (50c:50s)recorded better combustion properties of volatile matter (99.63%), fixed carbon (0.37%), ash content (3.0%), heating value (15.6407kj/g) and high carbon composition (45.57wt.%) when compared with the other samples of varying formulations. However, it is recommended that equal proportion of coconut coir and sawdust mixed is the most suitable formulation for the production of the briquette due to the improved combustion properties, low moisture content, low ash content, high heating value, high volatile matter and moderate fixed carbon.
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    Development of Abrasive Sandpaper Grains from Agro-Waste Material for Polishing of Wood Surface
    (Faculty of Engineering and Technology, Adeleke University., 2019) Ibrahim, H.K.; Abdulhamid A.S.; Abdulkareem, S.; Shuaib-Babata, Y. L.; Popoola O. T.; Kareem, A.G.; Adeyi A. M.; Busari, O. Y.O.; Ambali, I.O.
    In Nigeria, natural and some synthetic abrasive grains used in manufacturing of sandpaper such as silicon carbide, aluminum oxide and aluminum silicate mineral are scarce and expensive. The aim of this paper focused on development of sandpaper grains from agricultural waste material (Coconut shell) and resin (binder) for smoothening of wood surface. Sieving analysis was conducted in particle sizes of P40 (420 μm) and P60 (250 μm) sandpaper grit size (according to Federation of European Producers of Abrasive standard). The Physical and Mechanical properties were determined and compared with properties of conventional products (P60 and P40 Garnet Paper). Surface finish assessments were carried out with visual inspection on selected wood. The result from elemental composition analysis showed that the produced sample grains contain some hard ceramic materials needed for effective polishing or surface finishing. The physical and mechanical properties of the grains samples were found to have close properties with the standard conventional sand paper. Hardness and compressive strength of Coconut shell (CNS) grains/resin composites samples increased with increase in polyester resin concentration. Samples made from 250 μm sieve size showed better mechanical properties than the corresponding samples from 420 μm sieve size. The wear rate of CNS/resin composites was also found to increase with increase in load (40, 60, 80, 100 and 120 g) and temperature (50 and 150 oC. Also, result from visual examination shows that the CNS specimens contribute to high material removal but not smoother due to grain sizes considered for this study.
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    Development of Abrasive Sandpaper Grains from Agro-Waste Material for Polishing of Wood Surface
    (Faculty of Engineering and Technology, Adeleke University., 2019) Ibrahim H. K.; Abdulhamid A.S.; Abdulkareem, S.; Shuaib-Babata, Y. L.; Popoola O. T.; Kareem, A.G.; Adeyi A. M.; Busari, O. Y.; Ambali, I.O.