Abstract
Agricultural sector produces large quantity of by-products that are underutilized. Densification from these agro-wastes is critical towards production of eco-friendly solid fuels. Briquetting of solid fuels has been considered an alternative energy source. Briquetting from three feedstocks has been done, however, right mix and technique for compaction has not been fully studied. Thus, the broad objective of this study was to evaluate optimization of briquettes properties based on briquetting techniques and three feedstocks mix using Taguchi approach. Rice husk- maize cobs and bagasse feedstocks were carbonized using drum kiln. The chars were mixed at different mix ratios 1:1:1, 1:2:2, 1:3:3, 2:1:2, 2:2:3, 2:3:1, 3:1:3, 3:2:1 and 3:3:2 for briquetting. Taguchi Grey Relational Analysis technique was carried out for optimization. Optimal conditions of briquettes were attained at a mix ratio of 3:2:1 using the screw press technique. Physical properties, moisture content and density obtained at optimal were 6.43% and 904 kg/m3. Combustion characteristics investigated showed 3.63% (ash content), 18.56% (volatile matter), 77.81% (fixed carbon) and 29.04 MJ/kg (calorific value). From the analysis, (α=0.05), quality of briquettes was influenced by both technique and mix ratios. These research findings are of important since optimization increases efficiency of briquettes through waste reduction.
References
Ajimotokan, H. A., Ehindero, A. O., Ajao, K. S., Adeleke, A. A., Ikubanni, P. P., & Shuaib-Babata, Y. L. (2019). Combustion characteristics of fuel briquettes made from charcoal particles and sawdust agglomerates. Scientific African, 6, 1-15. https://doi.org/10.1016/j.sciaf.2019.e00202
Arellano, G. M. T., Kato, Y. S., & Bacani, F. T. (2015). Evaluation of Fuel Properties of Charcoal Briquettes Derived from Combinations of Coconut Shell, Corn Cob and Sugarcane Bagasse. Proceedings of the DLSU Research Congress, 3, 1-6.
Athreya & Venkatesh (2012). Application Of Taguchi Method for Optimization of Process Parameters in Improving the Surface Roughness of Lathe Facing Operation. .International Refereed Journal of Engineering and Sciences, 1(3): 13-19
Garcia-Freites, S., Welfle, A., Lea-Langton, A., Gilbert, P., & Thornley, P. (2020). The potential of coffee stems gasification to provide bioenergy for coffee farms: A case study in the Colombian coffee sector. Biomass Conversion and Biorefinery, 10(4), 1137–1152. https://doi.org/10.1007/s13399-019-00480-8
Karunanithy, C., Wang, Y., Muthukumarappan and Pugalendhi, S. (2012). Physiochemical characterization of briquettes made from different feedstocks. Biotechnology research international
Kaur, S., Kumar, D., Singla, M., & Dogra, R. (2020). Biogas to Bio-CNG from paddy straw: A review. International Journal of Chemical Studies, 8(3), 1833–1838. https://doi.org/10.22271/chemi.2020.v8.i3y.9475
Mitra, R. K. S., Nagaraju, N., & Sekhar, C. (2015). Optimization of process parameters in repititive corrugation & straightening (rcs) of mild steel using taguchi based fuzzy logic. 5
Navalta, C. J. L. G., Banaag, K. G. C., Raboy, V. A. O., Go, A. W., Cabatingan, L. K., & Ju, Y.-H. (2020). Solid fuel from Co-briquetting of sugarcane bagasse and rice bran. Renewable Energy, 147, 1941–1958. https://doi.org/10.1016/j.renene.2019.09.129
Okwara, M. W., Nyaanga, D., Kabok, P. & Nyaanga, J. (2022). Effect of Process Techniques on Three Feedstocks Mix on Briquette Performance Properties. Journal of Energy, Environmental & Chemical Engineering. Vol. 7, No. 1, 2022, pp. 1-8. doi: 10.11648/j.jeece.20220701.11
Okwara, M. W., Nyaanga, D. & Kabok, P. (2022). Effect of Three Feedstocks Mix on Briquettes’ Physical and Combustion Properties. Journal of Engineering in Agriculture and the Environment. Volume 8. No.2, 2022, pp. 73-87. DOI: https://doi.org/10.37017/jeae-volume8-no2.2022-6
Ozoh, O., Okwor, T., Adetona, O., Akinkugbe, A., Amadi, C., Esezobor, C., Adeyeye, O., Ojo, O., Nwude, V., & Mortimer, K. (2018). Cooking Fuels in Lagos, Nigeria: Factors Associated with Household Choice of Kerosene or Liquefied Petroleum Gas (LPG). International Journal of Environmental Research and Public Health, 15(4), 1-13. https://doi.org/10.3390/ijerph15040641
Soares, L. D. S., Maia, A. A. D., Moris, V. A. S., & De Paiva, J. M. F. (2020). Study of the Effects of the Addition of Coffee Grounds and Sugarcane Fibers on Thermal and Mechanical Properties of Briquettes. Journal of Natural Fibers, 17(10), 1430–1438. https://doi.org/10.1080/15440478.2019.1578325
Thapa, S., & Engelken, R. (2020). Optimization of pelleting parameters for producing composite pellets using agricultural and agro-processing wastes by Taguchi-Grey relational analysis. Carbon Resources Conversion, 3, 104–111
Usmani, Z., Sharma, M., Awasthi, A. K., Sivakumar, N., Lukk, T., Pecoraro, L., Thakur, V. K., Roberts, D., Newbold, J., & Gupta, V. K. (2021). Bioprocessing of waste biomass for sustainable product development and minimizing environmental impact. Bioresource Technology, 322, 1-12. https://doi.org/10.1016/j.biortech.2020.124548
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