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Recycling of Hydrocarbon Waste from Thermal Power Plant: Case of the Maria Gléta Thermal Power Plant in the Republic of Benin
Laboratory of Engineering Sciences and Applied Mathematics (LSIMA), UNSTIM, Abomey, Benin
Laboratory of Engineering Sciences and Applied Mathematics (LSIMA), UNSTIM, Abomey, Benin
Kaba Laboratory for Research in Chemistry and Applications (LaKReCA), Faculty of Science and Technology of Natitingou, Natitingou, Benin
Laboratory of Engineering Sciences and Applied Mathematics (LSIMA), UNSTIM, Abomey, Benin
Laboratory of Engineering Sciences and Applied Mathematics (LSIMA), UNSTIM, Abomey, Benin
Laboratory of Engineering Sciences and Applied Mathematics (LSIMA), UNSTIM, Abomey, Benin
- 1 Laboratory of Engineering Sciences and Applied Mathematics (LSIMA), UNSTIM, Abomey, Benin
- 2 Laboratory of Engineering Sciences and Applied Mathematics (LSIMA), UNSTIM, Abomey, Benin
- 3 Kaba Laboratory for Research in Chemistry and Applications (LaKReCA), Faculty of Science and Technology of Natitingou, Natitingou, Benin
- 4 Laboratory of Engineering Sciences and Applied Mathematics (LSIMA), UNSTIM, Abomey, Benin
- 5 Laboratory of Engineering Sciences and Applied Mathematics (LSIMA), UNSTIM, Abomey, Benin
- 6 Laboratory of Engineering Sciences and Applied Mathematics (LSIMA), UNSTIM, Abomey, Benin
Journal of Environmental Protection·Volume 16 (2025)·Pages 706–718·Published 22 July 2025·DOI10.4236/jep.2025.167036
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Abstract
The elimination of hydrocarbon waste is difficult, and it is a great source of greenhouse gas emissions due to its toxicity. The study characterised oily sludge from a Beninese thermal plant and tested small-scale pyrolysis to identify conversion conditions that minimise toxic residues. Laboratory analyses quantified moisture (≈25%), sulphur (0.3%), selected heavy metals, and very high viscosity. Pyrolysis at 400˚C for 30 min produced ~70% oil + gas, 5% char and 25% water, whereas 500˚C yielded only ash. The authors recommend the 400˚C/30 min option as a practical recovery route.
KeywordsValorizationOily SludgePyrolysisThermal Power Plant
- United Nations (2015) Sustainable Development Goal 7: Ensure Access to Affordable, Reliable, Sustainable and Modern Energy for All. Sustainable Development Knowledge Platform. https://sdgs.un.org/goals/goal7
- Niu, A., Sun, X. and Lin, C. (2022) Trend in Research on Characterization, Environmental Impacts and Treatment of Oily Sludge: A Systematic Review. Molecules , 27, Article 7795. https://doi.org/10.3390/molecules27227795
- Latreche, M.S. and Zerrouki, A. (2019) Traitement des eaux huileuses de l’unité de déshui-lage de Hassi R’mel. Doctoral Dissertation, Université Kasdi Merbah Ouargla, 61 p.
- Kumar, S. and Ankaram, S. (2019) Waste-to-Energy Model/Tool Presentation. In: Kumar, S., Kumar, R. and Pandey, A., Eds., Current Developments in Biotechnology and Bioengineering , Elsevier, 239-258. https://doi.org/10.1016/b978-0-444-64083-3.00012-9
- Lombardi, L., Carnevale, E. and Corti, A. (2015) A Review of Technologies and Performances of Thermal Treatment Systems for Energy Recovery from Waste. Waste Management , 37, 26-44. https://doi.org/10.1016/j.wasman.2014.11.010
- Gabbar, H.A. and Aboughaly, M. (2021) Conceptual Process Design, Energy and Economic Analysis of Solid Waste to Hydrocarbon Fuels via Thermochemical Processes. Processes , 9, Article 2149. https://doi.org/10.3390/pr9122149
- Gourram, A. and Siffert, A. (1996) Conversion hydrothermale des boues des stations d’épuration des eaux usées en huile, gaz et combustible solide. Environnement , Ingénierie & Développement , 1, 22-24. https://doi.org/10.4267/dechets-sciences-techniques.557
- Lede, J., Berthelot, P., Villermaux, J., Rolin, A., François, H. and Deglise, X. (1980) Pyrolyse-flash de déchets ligno-cellulosiques en vue de leur valorisation par l’énergie solaire concentrée. Revue de Physique Appliquée , 15, 545-552. https://doi.org/10.1051/rphysap:01980001503054500
- Lucena, E., Verdun, P., Aurelle, Y. and Secq, A. (2003) Nouveau procédé de valorisation des « Slops » de raffineries et déchets huileux par distillation hétéroazéotropique. Oil & Gas Science and Technology , 58, 353-360. https://doi.org/10.2516/ogst:2003022
- Boutin, O. and Roche, N. (2002) La valorisation des boues issues de stations d’épuration par des procédés thermochimiques: les procédés de gazéification, une alternative dans le traitement des boues-réalité et perspectives. Valoris , No. 248, 35-44.
- Hu, G., Li, J. and Zeng, G. (2013) Recent Development in the Treatment of Oily Sludge from Petroleum Industry: A Review. Journal of Hazardous Materials , 261, 470-490. https://doi.org/10.1016/j.jhazmat.2013.07.069