COMPARATIVE EVALUATION OF FUEL PROPERTIES AND ENERGY POTENTIAL OF PELLETS PRODUCED FROM DIVERSE AGRICULTURAL BIOMASS WASTES IN TROPICAL REGIONS: IMPLICATIONS FOR SUSTAINABLE BIOENERGY PRODUCTION

Authors

  • Wisdom Chukwuemeke Ulakpa Southern Delta University, Ozoro
  • Emmanuel Erokare
  • Sinebe
  • Bereprebofa
  • Enyi

DOI:

https://doi.org/10.33003/fjs-2026-1010-5460

Keywords:

Biomass Pellets, Calorific Value, Proximate Analysis, Agricultural Waste, Palm Kernel Shell, Coconut Shell, Renewable Energy, Bioenergy

Abstract

This study presents a comparative evaluation of the calorific value and proximate composition of pellets produced from eight different agricultural biomass wastes: palm kernel fruit bunch (PKFB), coconut fruit bunch (CFB), rice husk (RH), groundnut shell (GNS), sugarcane bagasse (SB), palm kernel shell (PKS), coconut shell (CS), and sawdust (SD). The biomass samples were collected, processed, and pelletized under identical conditions before characterization. Experimental results showed significant variations in fuel properties. Palm kernel shell and coconut shell pellets exhibited the highest calorific values (20.1 MJ/kg and 19.6 MJ/kg, respectively), the lowest ash contents (2.4% and 1.9%), and the highest fixed carbon (18.2% and 20.8%). In contrast, rice husk pellets recorded the lowest calorific value (15.3 MJ/kg) due to exceptionally high ash content (18.5%). All samples maintained acceptable moisture levels (less than 12%), while volatile matter contents were generally high (over 69%), indicating good ignition properties. The findings demonstrate that palm kernel shell and coconut shell are the most promising feedstocks for high-quality biomass pellets, offering superior energy density and combustion characteristics. The study highlights the potential of locally available agro-industrial residues for sustainable bioenergy production and underscores the importance of selecting feedstocks and conducting comprehensive fuel characterization in biomass pellet development.

References

Abdulkadir, K. (2024). Prediction of the higher heating values of biomass using machine learning methods based on proximate and ultimate analysis. Journal of Mechanical Science and Technology, 38, 1569–1574.

https://doi.org/10.1007/s12206-024-0247-1

Abdulsalam, I. A., Jekayinfa, S. O., Akande, F. B., & Ola, F. A. (2024). Characterization of pellets produced from rice bran and corncob. LAUTECH Journal of Engineering and Technology, 18(1), 30–36 . https://laujet.com/index.php/laujet/article/view/614

Anwar, Z., Gulfraz, M., & Irshad, M. (2014). Agro-industrial lignocellulosic biomass a key to unlock the future bio-energy: A brief review. Journal of Radiation Research and Applied Sciences, 7, 163–173. https://doi.org/10.1016/j.jrras.2014.02.003

Anuchi, S. O., Campbell, K. L. S., & Hallet, J. P. (2022). Effective pretreatment of lignin-rich coconut wastes using a low-cost ionic liquid. Scientific Reports, 12, Article 6108. https://doi.org/10.1038/s41598-022-09629-4

Asaad, S. M., Inayat, A., Rocha-Meneses, L., Jamil, F., Ghenai, C., & Shanableh, A. (2023). Prospective of response surface methodology as an optimization tool for biomass gasification process. Energies, 16(1), Article 40. https://doi.org/10.3390/en16010040

Bazargan, A., Wang, Z., Barford, J. P., Saleem, J., & McKay, G. (2020). Optimization of the removal of lignin and silica from rice husks with alkaline peroxide. Journal of Cleaner Production, 260, Article 120848. https://doi.org/10.1016/j.jclepro.2020.120848

Chen, C., Bi, Y., Huang, Y., & Huang, H. (2021). Review on slagging evaluation methods of biomass fuel combustion. Journal of Analytical and Applied Pyrolysis, 155, Article 105082. https://doi.org/10.1016/j.jaap.2021.105082

Diego Racero-Galaraga, Rhenals-Julio, J. D., Sofan-German, S., Mendoza, J. M., & Bula-Silvera, A. (2024). Proximate analysis in biomass: Standards, applications and key characteristics. Results in Chemistry, 12, Article 101886. https://doi.org/10.1016/j.rechem.2024.101886

Erokare, E. T., Ekpu, M., Sinebe, J. E., Sada, S. O., Ikpeseni, S. C., & Atsu, A. M. (2026). Combustion performance and emission characteristics of sawdust-coal pellets using waste styrofoam as binder. Journal of Science Innovation & Technology Research (JSITR). https://doi.org/10.70382/ajsitr.v12i9.072

Erokare, T. E., Orhorhoro, E. K., & Monye, N. S. (2025). Experimental analysis of combustion properties of tropical wood waste for energy production in Nigeria. Unizik Journal of Technology, Production and Mechanical Systems.

Ezeokolie, E. D., Maduoma, T. U., Akpotabor, E. M., Akanni, O., Garbati, A. A., Odeh, A. A., Chukwu, P. M., Achoronye, F. N., & Esonwune, J. N. (2024). Production and optimization of briquette (solid fuels) from waste biomass using industrial starch as binder. European Journal of Sustainable Development Research, 8(4), Article em0270. https://doi.org/10.29333/ejosdr/15138

Hardianto, T., Wenas, A. A., & Juangsa, F. B. (2023). Upgrading process of palm empty fruit bunches as alternative solid fuel: A review. Clean Energy, 7(6), 1173–1188. https://doi.org/10.1093/ce/zkad059

Halim, S. A., Razali, N., & Mohd, N. (2020). Experimental data on the properties of pelletization of palm kernel shell using sago starch and sodium acetate. Data in Brief, 33, Article 106535. https://doi.org/10.1016/j.dib.2020.106535

Ighodaro, O. O., & Ndem, F. E. (2023). Performance modelling of co-fired palm kernel shell pulverized coal blend in steam power plant. Journal of Applied Sciences and Environmental Management, 27(5), 899–903. https://doi.org/10.4314/jasem.v27i5.2

Jagtap, A., & Kalbande, S. (2023). Pelletization process for the production of fuel pellets from various surplus biomass: A review. International Journal of Environment and Climate Change, 13(7), 200–208. https://doi.org/10.9734/ijecc/2023/v13i71868

Jekayinfa, S. O., Orisaleye, J. I., & Pecenka, R. (2020). An assessment of potential resources for biomass energy in Nigeria. Resources, 9(8), Article 92. https://doi.org/10.3390/resources9080092

Samarjeet Singh Siwal, Qibo Zhang, Nishu Devi, Adesh Kumar Saini, Vipin Saini, Bhawna Pareek, Sergejs Gaidukovs, Vijay Kumar Thakur (2021). Recovery processes of sustainable energy using different biomass and wastes. Renewable and Sustainable Energy Reviews, Volume 150, https://doi.org/10.1016/j.rser.2021.111483

Lachman, J., Baláš, M., Lisý, M., Lisá, H., Milčák, P., & Elbl, P. (2021). An overview of slagging and fouling indicators and their applicability to biomass fuels. Fuel Processing Technology, 217, Article 106804. https://doi.org/10.1016/j.fuproc.2021.106804

Nikdalila, R., Reza, M. S., Abu Bakar, M. S., & Azad, A. K. (2020). Thermochemical characterization of rice husk (Oryza sativa Linn) for power generation. ASEAN Journal of Chemical Engineering. https://doi.org/10.22146/ajche.59267

Onochie, U. P., Ekanem, D. O., Onoroh, F., Osigbemeh, M. S., Owamah, H. I., Orugba, H. O., Ikpeseni, S. C., Okolotu, G. I., Oyebisi, S., & Kwasi-Effah, C. C. (2025). Palm kernel shell and coconut shell pellets cofiring: Effect of optimization ratio on the combustion emission CO₂ and SO₂. NIPES - Journal of Science and Technology Research, 7(2), 85–104. https://doi.org/10.37933/nipes/7.2.2025.6

Onochie, U. P., Ofomatah, A. C., Owamah, H. I., Ikpeseni, S. C., Onwusa, S. C., Erokare, T. E., & Orugba, H. O. (2024). Assessment of the compatibility of biomass-coal blends for cleaner energy utilization and sustainable development. Biomass Conversion and Biorefinery. https://doi.org/10.1007/s13399-024-05771-3

Orhorhoro, E. K., Igbagbon, E. J., & Erokare, T. E. (2024). Performance evaluation of a developed miniature steam boiler using different samples of wood waste as fuel for steam generation. Journal of Advanced Industrial Technology and Application, 5(1), Article 2636. https://doi.org/10.30880/jaita.2024.05.01.004

Sanchumpu, P., Suaili, W., Nonsawang, S., Junsiri, C., Ansuree, P., & Laloon, K. (2024). Biomass pellet processing from sugar industry byproducts: A study on pelletizing behavior and energy usage. Sustainability, 16(14), Article 6035. https://doi.org/10.3390/su16146035

Umubigho, W., Sinebe, J. E., Erokare, E. T., & Ulakpa, W. C. (2026). Experimental investigation of the thermal performance of coal–sawdust fuel pellets with varying biomass ratios. Journal of African Innovation & Advanced Studies (JAIAS). https://doi.org/10.70382/ajaias.v12i2.082

Umubigho, W., Ekpu, M., Sada, S. O., Sinebe, J. E., & Ikpeseni, S. C. (2025). Characterising emissions from sawdust-coal pellets combustion using ultimate analysis techniques. NIPES-Journal of Science and Technology Research, 7(1), 64–81. https://doi.org/10.37933/nipes/7.1.2025.6

Winter, S. G., Zanuncio, A. J. V., Santos, R. J. C. d., Carneiro, A. d. C. O., Lima, B. L. d., Carvalho, A. G., Jorge, F. d. J., Demuner, I. F., Peres, L. C., & Vieira, T. S. (2026). Production and characterization of pellets from blends of residual biomass of Pinus wood and coffee straw. Sustainability, 18(11), Article 5586. https://doi.org/10.3390/su18115586

Yang, Y., Song, L., Li, Y., Shen, Y., Yang, M., Wang, Y., Zheng, H., Qi, W., & Lei, T. (2025). Effects of different biomass types on pellet qualities and processing energy consumption. Agriculture, 15(3), Article 316. https://doi.org/10.3390/agriculture15030316

Yao, X., Xu, K., Yan, F., & Liang, Y. (2017). The influence of ashing temperature on ash fouling and slagging characteristics during combustion of biomass fuels. BioResources, 12(1), 1593–1610. https://bioresources.cnr.ncsu.edu/resources/the-influence-of-ashing-temperature-on-ash-fouling-and-slagging-characteristics-during-combustion-of-biomass-fuels/

Calorific Value Results of Biomass

Downloads

Published

22-06-2026

How to Cite

Chukwuemeke Ulakpa, W., Erokare, E., Sinebe, Bereprebofa, & Enyi. (2026). COMPARATIVE EVALUATION OF FUEL PROPERTIES AND ENERGY POTENTIAL OF PELLETS PRODUCED FROM DIVERSE AGRICULTURAL BIOMASS WASTES IN TROPICAL REGIONS: IMPLICATIONS FOR SUSTAINABLE BIOENERGY PRODUCTION. FUDMA JOURNAL OF SCIENCES, 10(10), 244-250. https://doi.org/10.33003/fjs-2026-1010-5460