Harnessing Abuja's Municipal Solid Waste as a Renewable Energy Source: Scanning Electron Microscopy Analysis
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Abstract
A study of Abuja’s municipal solid waste (MSW) samples using the scanning electron microscopy analysis was undertaken in this work. In the face of the severe energy poverty being experienced in Nigeria which largely depends on diminishing fossil fuel resources coupled with the associated problem of greenhouse gas emission, the energy potential available in municipal solid wastes needs to be investigated. Using MSW as a fuel source for electric energy production will also positively impact on Abuja’s waste management. This present study requires the analysis of the MSW with aim of confirming that products of its incineration will not be hazardous to the environment. ASTM E 1508 procedures for utilizing the scanning electron microscope (SEM) were followed to identify elements that would be contained in the bottom ash of the incineration process of samples of Abuja’s municipal solid wastes obtained from selected districts of the city. Elemental composition of the bottom ash that will be formed from incineration of Abuja’s MSW was obtained by the use of energy dispersive x-ray analysis. The micrographs plotted indicate that silicon and iron are the principal elements present in the samples with values for silicon and iron being highest at 49.5 and 19.55%, respectively, for the sample from Dutse-Alhaji. The tests also show the presence of silver in the organic wastes generated in Abuja, while presence of sulphur is very minimal. The silicon levels present in Abuja’s municipal solid waste compare well with values for Nigerian coals which have percent silicon contents ranging from 39.0 – 49.4% (Enugu coal – 39.0%; Okaba – 44.8%; Maiganga – 49.4%). The test results also show that Abuja’s MSW samples had grain sizes ranging from 3.5 mm 16 mm. The results indicate Abuja’s MSW combustion rate will be lower than for pulverised coal which is known to have much lower grain size in the range of 75 μm to 106 μm and will need shredding before firing since grain size is a very critical determinant factor in solid fuel combustion rate and burn-out time. The tests conclusively show that Abuja’s MSW will be a more environmentally friendly fuel than coal because of its lower sulphur content.
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Rullgård, H., Öfverstedt, L. G., Masich, S., Daneholt, B. & Öktem, O. (2011). Simulation of transmission electron microscope images of biological specimens. Journal of microscopy, 243(3), 234-256. DOI: https://doi.org/10.1111/j.1365-2818.2011.03497.x
Malav, L. C., Yadav, K. K., Gupta, N., Kumar, S., Sharma, G. K., Krishnan, S., Rezania, S., Kamyab, H., Pham, Q. B., Yadav, S., Bhattacharyya, S. & Bach, Q. V. (2020). A Review on Municipal Solid waste as a Renewable Source for Waste-to-Energy Project in India: Current Practices, Challenges and Future Opportunities. Journal of Cleaner Production, 277, https://doi.org/10.1016/j.jclepro.2020.123227. DOI: https://doi.org/10.1016/j.jclepro.2020.123227
Abubakar, I. R. (2014), Abuja City Profile. Cities. doi: .10.1016/j.cities.2014.05.008. 41. 81–91. DOI: https://doi.org/10.1016/j.cities.2014.05.008
Chukwurah, G., John-Nsa, C. A., Okeke, F. O. & Chukwudi, E. C. (2022). Rapid Spatial Growth of Cities and its Planning Implications for Developing Countries: A Case Study of Abuja, Nigeria. Indonesian Journal of Geography, 54(2). 313 - 320. doi:10.22146/ijg.70316 DOI: https://doi.org/10.22146/ijg.70316
Bashir, O. A., Reigns, A., Unimke, O. P., & Mshelia, S. (2021). Population Dynamics to Urban Spaces Needs in One of Africa’s Largest Cities: Abuja, the Federal Capital City of Nigeria. Iconic Research and Engineering Journals. 4 (10), 1-10.
Aderoju, O. M., Gemusse, U. G. O. & Dias, A. G. (2019). An Optimization of the Municipal Solid Waste in Abuja, Nigeria, for Electrical Power Generation, International Journal of Energy Production and Management. 4 (1), 63-74. DOI: https://doi.org/10.2495/EQ-V4-N1-63-74
Imam, A., Mohammed, B., Wilson, D. C., & Cheeseman, C. R. (2008). Solid waste management in Abuja, Nigeria. Waste management, 28(2), 468-472. DOI: https://doi.org/10.1016/j.wasman.2007.01.006
Lawal, M., A. Ndagi, A., Mohammed, A., Saleh, Y. Y., Shuaibu, A., Hassan, I., Abubakar, S., Soja, U.B. & Jagaba, A.H. (2024). Proximate Analysis of Waste-to-Energy Potential of Municipal Solid Waste for Sustainable Renewable Energy Generation, Ain Shams Engineering Journal, 15 (1). 1 - 9 https://doi.org/10.1016/j.asej.2023.102357 DOI: https://doi.org/10.1016/j.asej.2023.102357
Chen, C. & Wang, C. (2017), Municipal Solid Waste (MSW) Incineration’s Potential Contribution to Electricity Production and Economic Revenue in Taiwan. Journal of Taiwan Energy. 4(1), 93-106.
Carneiro, M. L. N. & Gomes, P. S. M. (2019). Energy-Ecological Efficiency of Waste-to-Energy Plants. Energy Conversion and Management, 195, 1359–1370, doi:10.1016/j.enconman.2019.05.098. DOI: https://doi.org/10.1016/j.enconman.2019.05.098
Magaji J.Y. & Jenkwe E.D. (2020). An Assessment of Soil Contamination in and Around Mpape Dumpsite, Federal Capital Territory (FCT), Abuja Nigeria. Global Journal of Earth and Environmental Science. 5(3), 73-81, https://doi.org/10.31248/GJEES2020.076 DOI: https://doi.org/10.31248/GJEES2020.076
Yaqoob, H., Teoh, Y. H. Sher, F., Jamil, M. A. Nuhanovic, M., Razmkhah, O. & Erten, B. (2021). Tribological Behaviour and Lubricating Mechanism of Tire Pyrolysis Oil. Coatings, 11 (4), 386. 1 – 13, https://doi.org/10.3390/ coatings11040386 DOI: https://doi.org/10.3390/coatings11040386
Wei, B., Wang, X., Tan, H., Zhang, L., Wang, Y. and Zhao Wang, Z. (2016), Effect of Silicon–Aluminum Additives on Ash Fusion and Ash Mineral Conversion of Xinjiang High-Sodium Coal, Fuel, 181. 1224-1229, https://doi.org/10.1016/j.fuel.2016.02.072. DOI: https://doi.org/10.1016/j.fuel.2016.02.072
Suescum-Morales, D., Silva, R. V., Bravo, M., Jiménez, J. R. Fernández-Rodríguez, J. M. & de Brito, J. (2022), Effect of Incorporating Municipal Solid Waste Incinerated Bottom ash in Alkali-activated Fly Ash Concrete Subjected to Accelerated CO2 Curing, Journal of Cleaner Production, 370, 1 – 17. https://doi.org/10.1016/j.jclepro.2022.133533 DOI: https://doi.org/10.1016/j.jclepro.2022.133533
Cho, B. H., Nam, B. H., An J. & Youn, H. (2020). Municipal Solid Waste Incineration (MSWI) Ashes as Construction Materials—A Review. Materials, 13(14), 31-43, https://doi.org/10.3390/ma13143143. DOI: https://doi.org/10.3390/ma13143143
Loginova, E., Volkov, D. S. van de Wouw, P. M. F. Florea M. V. A. & Brouwers, H. J. H. (2018). Detailed Characterization of Particle Size Fractions of Municipal Solid Waste Incineration Bottom Ash, Journal of Cleaner Production, 207(1), 866 – 874, doi:10.1016/j.jclepro.2018.10.022 DOI: https://doi.org/10.1016/j.jclepro.2018.10.022
Assi, A., Bilo, F., Federici, S., Zacco, A., Depero, L. E & Bontempi, E. (2020). Bottom Ash Derived From Municipal Solid Waste and Sewage Sludge Co-incineration: First Results About Characterization and Reuse. Waste Management, 116 (2020), 147–156, doi:10.1016/j.wasman.2020.07.031. DOI: https://doi.org/10.1016/j.wasman.2020.07.031
Vishnoi, N. & Mohapatra, S. K. (2018). Study of Particle Size Distribution of Pulverized Coals in Utility Boilers. Particulate Science and Technology, 36 (8), 02726351, doi:10.1080/02726351.2017.1334731 DOI: https://doi.org/10.1080/02726351.2017.1334731
Rosa, A., Teixeira, I., Lacasta, A., Haurie, L., Soares, C., Tam, V. & Haddad, A. (2022). Experimental Design for the Propagation of Smoldering Fires in Corn Powder and Cornflour. Eng. 4. 15-30. 10.3390/eng4010002. DOI: https://doi.org/10.3390/eng4010002
Caviglia, C., Confalonieri, G., Corazzari, I., Destefanis, E., Mandrone, G., Pastero, L., Boero, R. & Pavese, A. (2019). Effects of Particle Size on Properties and Thermal Inertization of Bottom Ashes (MSW of Turin’s Incinerator). Waste Management, 84(1), 340–354, doi:10.1016/j.wasman.2018.11.050 DOI: https://doi.org/10.1016/j.wasman.2018.11.050