Biodiesel is a viable alternative to non-renewable fossil fuels. However, its commercialization faces challenges due to the high costs of conventional feedstocks. This study investigated the influence of reaction parameters—catalyst concentration, reaction temperature, and reaction time—on the yield of synthesized biodiesel from waste cooking oil using snail shell and plantain peel wastes as catalysts. Snail shells were calcined at 800 ℃ to produce CaO and characterized by X-ray fluorescence. Organic KOH, extracted from plantain peel ash burned at 750 ℃, impregnated the CaO to form a composite KOH/CaO catalyst. Using low-quality feedstock (acid value of 8.8 mg KOH/g oil), the oil underwent acid-esterification followed by transesterification under varied conditions. The optimal parameters, determined via response surface methodology (RSM), were 7% wt/wt catalyst concentration, 60.51 ℃ reaction temperature, and 1.93 h reaction time, achieving a maximum biodiesel yield of 92.23%. The best experimental yield, 92.10%, was obtained using a 2:1 green KOH/CaO ratio. Physicochemical properties and biodiesel composition conformed to ASTM D6751 standards. The highest fatty acid to methyl ester conversion rate, 93.86%, was achieved using the optimized snail shell catalyst. This research demonstrates that converting waste into biodiesel is not only feasible but also adds value to waste materials.
Citation: Vincent E. Efeovbokhan, Ubong E. Usoro, Omololu O. Fagbiele, Olubunmi G. Abatan. Valorization of waste cooking oil, plantain peel and snail shell for the optimization of biodiesel production[J]. AIMS Energy, 2026, 14(1): 89-114. doi: 10.3934/energy.2026004
Biodiesel is a viable alternative to non-renewable fossil fuels. However, its commercialization faces challenges due to the high costs of conventional feedstocks. This study investigated the influence of reaction parameters—catalyst concentration, reaction temperature, and reaction time—on the yield of synthesized biodiesel from waste cooking oil using snail shell and plantain peel wastes as catalysts. Snail shells were calcined at 800 ℃ to produce CaO and characterized by X-ray fluorescence. Organic KOH, extracted from plantain peel ash burned at 750 ℃, impregnated the CaO to form a composite KOH/CaO catalyst. Using low-quality feedstock (acid value of 8.8 mg KOH/g oil), the oil underwent acid-esterification followed by transesterification under varied conditions. The optimal parameters, determined via response surface methodology (RSM), were 7% wt/wt catalyst concentration, 60.51 ℃ reaction temperature, and 1.93 h reaction time, achieving a maximum biodiesel yield of 92.23%. The best experimental yield, 92.10%, was obtained using a 2:1 green KOH/CaO ratio. Physicochemical properties and biodiesel composition conformed to ASTM D6751 standards. The highest fatty acid to methyl ester conversion rate, 93.86%, was achieved using the optimized snail shell catalyst. This research demonstrates that converting waste into biodiesel is not only feasible but also adds value to waste materials.
| [1] |
Ebhota WS, Jen TC (2020) Fossil fuels environmental challenges and the role of solar photovoltaic technology advances in fast tracking hybrid renewable energy system. Int J Precis Eng Manuf Green Technol 7: 97-117. https://doi.org/10.1007/s40684-019-00101-9 doi: 10.1007/s40684-019-00101-9
|
| [2] |
Chudy-Laskowska K, Pisula T (2022) An analysis of the use of energy from conventional fossil fuels and green renewable energy in the context of the European Union's planned energy transformation. Energies 15: 7369. https://doi.org/10.3390/en15197369 doi: 10.3390/en15197369
|
| [3] |
Ramirez AD, Rivela B, Boero A, et al. (2019) Lights and shadows of the environmental impacts of fossil-based electricity generation technologies: A contribution based on the Ecuadorian experience. Energy Policy 125: 467-477. https://doi.org/10.1016/j.enpol.2018.11.005 doi: 10.1016/j.enpol.2018.11.005
|
| [4] |
Kelkar M (2024) Demise of fossil fuels part I: Supply and demand. Heliyon 10: e39200. https://doi.org/10.1016/j.heliyon.2024.e39200 doi: 10.1016/j.heliyon.2024.e39200
|
| [5] | Covert T, Greenstone M, Knittel CR (2016) Will we ever stop using fossil fuels? J Econ Perspect 30: 117-138. https://doi.org/10.1257/jep.30.1.117 |
| [6] | Van der Ploeg F, Withagen C (2012) Is there really a green paradox? J Environ Econ Manage 64: 342-363. https://doi.org/10.1016/j.jeem.2012.08.002 |
| [7] |
Driga AM, Drigas AS (2019) Climate change 101: How everyday activities contribute to the ever-growing issue. Int J Recent Contrib Eng Sci IT 7: 22-31. https://doi.org/10.3991/ijes.v7i1.10031 doi: 10.3991/ijes.v7i1.10031
|
| [8] |
Yoro KO, Daramola MO (2020) CO2 emission sources, greenhouse gases, and the global warming effect. Adv Carbon Capture, 3-28. https://doi.org/10.1016/B978-0-12-819657-1.00001-3 doi: 10.1016/B978-0-12-819657-1.00001-3
|
| [9] |
Singh P, Yadav D (2021) Link between air pollution and global climate change. Global Clim Change, 79-108. https://doi.org/10.1016/B978-0-12-822928-6.00009-5 doi: 10.1016/B978-0-12-822928-6.00009-5
|
| [10] |
Singh RL, Singh PK (2017) Global environmental problems. Princ Appl Environ Biotechnol Sustainable Future, 13-41. https://doi.org/10.1007/978-981-10-1866-4_2 doi: 10.1007/978-981-10-1866-4_2
|
| [11] |
Richard G, Sawyer WE, Sharipov A (2024) Environmental impacts of air pollution. Sustainable Strategies for Air Pollut Mitigation, 47-76. https://doi.org/10.1007/698_2024_1114 doi: 10.1007/698_2024_1114
|
| [12] |
Algarni S, Tirth V, Alqahtani T, et al. (2023) Contribution of renewable energy sources to the environmental impacts and economic benefits for sustainable development. Sustainable Energy Technol Assess 56: 103098. https://doi.org/10.1016/j.seta.2023.103098 doi: 10.1016/j.seta.2023.103098
|
| [13] |
Kumar S, Rathore K (2023) Renewable energy for sustainable development goal of clean and affordable energy. Int J Mater Manuf Sustainable Technol 2: 1-15. https://doi.org/10.56896/IJMMST.2023.2.1.001 doi: 10.56896/IJMMST.2023.2.1.001
|
| [14] |
Cui L, Weng S, Nadeem AM, et al. (2022) Exploring the role of renewable energy, urbanization and structural change for environmental sustainability: Comparative analysis for practical implications. Renewable Energy 184: 215-224. https://doi.org/10.1016/j.renene.2021.11.075 doi: 10.1016/j.renene.2021.11.075
|
| [15] |
Neupane D (2022) Biofuels from renewable sources, a potential option for biodiesel production. Bioengineering 10: 29. https://doi.org/10.3390/bioengineering10010029 doi: 10.3390/bioengineering10010029
|
| [16] | Rahpeyma SS, Raheb J (20219) Microalgae biodiesel as a valuable alternative to fossil fuels. BioEnergy Res 12: 958-965. https://doi.org/10.1007/s12155-019-10033-6 |
| [17] |
Oni BA, Sanni SE, Orodu DO, et al. (2022) Comparing the effects of Juliflora biodiesel doped with nano-additives on the performance of a compression ignition (CI) engine: Part A. Energy 244: 122635. https://doi.org/10.1016/j.energy.2021.122635 doi: 10.1016/j.energy.2021.122635
|
| [18] |
Mandari V, Devarai SK (2022) Biodiesel production using homogeneous, heterogeneous, and enzyme catalysts via transesterification and esterification reactions: A critical review. BioEnergy Res 15: 935-961. https://doi.org/10.1007/s12155-021-10333-w doi: 10.1007/s12155-021-10333-w
|
| [19] |
Chidambaram P, Lokhande DA, Ramachandran DM (2021) A review on biodiesel properties and fatty acid composites. REST J Emerging Trends Modell Manuf 7: 87-93. https://doi.org/10.46632/7/3/4 doi: 10.46632/7/3/4
|
| [20] |
Aljaafari A, Fattah IMR, Jahirul MI et al. (2022) Biodiesel emissions: a state-of-the-art review on health and environmental impacts. Energies 15: 6854. https://doi.org/10.3390/en15186854 doi: 10.3390/en15186854
|
| [21] |
Litvak S, Litvak O (2020) Some aspects of reducing greenhouse gas emissions by using biofuels. J Ecol Eng 21: 198-206. https://doi.org/10.12911/22998993/126967 doi: 10.12911/22998993/126967
|
| [22] |
Rony ZI, Mofijur M, Hasan MM, et al. (2023) Alternative fuels to reduce greenhouse gas emissions from marine transport and promote UN sustainable development goals. Fuel 338: 127220. https://doi.org/10.1016/j.fuel.2022.127220 doi: 10.1016/j.fuel.2022.127220
|
| [23] |
Thapa S, Indrawan N, Bhoi PR (2018) An overview on fuel properties and prospects of Jatropha biodiesel as fuel for engines. Environ Technol Innovation 9: 210-219. https://doi.org/10.1016/j.eti.2017.12.003 doi: 10.1016/j.eti.2017.12.003
|
| [24] |
Sharma AK, Sharma PK, Chintala V, et al. (2020) Environment-friendly biodiesel/diesel blends for improving the exhaust emission and engine performance to reduce the pollutants emitted from transportation fleets. Int J Environ Res Public Health 17: 3896. https://doi.org/10.3390/ijerph17113896 doi: 10.3390/ijerph17113896
|
| [25] |
Ogunkunle O, Ahmed NA (2021) Overview of biodiesel combustion in mitigating the adverse impacts of engine emissions on the sustainable human-environment scenario. Sustainability 13: 5465. https://doi.org/10.3390/su13105465 doi: 10.3390/su13105465
|
| [26] |
Lopresto C (2025) Sustainable biodiesel production from waste cooking oils for energetically independent small communities: an overview. Int J Environ Sci Technol 22: 1953-1974. https://doi.org/10.1007/s13762-024-05779-2 doi: 10.1007/s13762-024-05779-2
|
| [27] |
Mizik T, Gyarmati G (2021) Economic and sustainability of biodiesel production—a systematic literature review. Clean Technol 3: 19-36. https://doi.org/10.3390/cleantechnol3010002 doi: 10.3390/cleantechnol3010002
|
| [28] |
Naylor RL, Higgins MM (2017) The political economy of biodiesel in an era of low oil prices. Renewable Sustainable Energy Rev 77: 695-705. https://doi.org/10.1016/j.rser.2017.04.026 doi: 10.1016/j.rser.2017.04.026
|
| [29] | Avagyan AB, Singh B (2019) Biodiesel: feedstocks, technologies, economics and barriers. In Assessment of Environmental Impact in Producing and Using Chains. https://doi.org/10.1007/978-981-13-5746-6 |
| [30] |
Kumar N, Sonthalia A, Pali HS, et al. (2019) Next-generation biofuels—opportunities and challenges. In Innovations In Sustainable Energy And Cleaner Environment, 171-191. https://doi.org/10.1007/978-981-13-9012-8_8 doi: 10.1007/978-981-13-9012-8_8
|
| [31] |
Kibar ME, Hilal L, Çapa BT et al. (2023) Assessment of homogeneous and heterogeneous catalysts in transesterification reaction: a mini review. ChemBioEng Rev 10: 412-422. https://doi.org/10.1002/cben.202200021 doi: 10.1002/cben.202200021
|
| [32] |
Obadiah A, Swaroopa GA, Kumar SV, et al. (2012) Biodiesel production from palm oil using calcined waste animal bone as catalyst. Bioresour Technol 116: 512-516. https://doi.org/10.1016/j.biortech.2012.03.112 doi: 10.1016/j.biortech.2012.03.112
|
| [33] |
Rizwanul Fattah IM, Ong HC, Mahlia TMI, et al. (2020) State of the art of catalysts for biodiesel production. Front Energy Res 8: 101. https://doi.org/10.3389/fenrg.2020.00101 doi: 10.3389/fenrg.2020.00101
|
| [34] |
de Lima AL, Ronconi CM, Mota CJ (2016) Heterogeneous basic catalysts for biodiesel production. Catal Sci Technol 6: 2877-2891. https://doi.org/10.1039/C5CY01989C doi: 10.1039/C5CY01989C
|
| [35] |
Miceli M, Frontera P, Macario A, et al. (2021) Recovery/reuse of heterogeneous supported spent catalysts. Catalysts 11: 591. https://doi.org/10.3390/catal11050591 doi: 10.3390/catal11050591
|
| [36] |
Abdullah SHYS, Hanapi NHM, Azid A, et al. (2017) A review of biomass-derived heterogeneous catalyst for a sustainable biodiesel production. Renewable Sustainable Energy Rev 70: 1040-1051. https://doi.org/10.1016/j.rser.2016.12.008 doi: 10.1016/j.rser.2016.12.008
|
| [37] |
Jayakumar M, Karmegam N, Gundupalli MP, et al. (2021) Heterogeneous base catalysts: Synthesis and application for biodiesel production—A review. Bioresour Technol 331: 125054. https://doi.org/10.1016/j.biortech.2021.125054 doi: 10.1016/j.biortech.2021.125054
|
| [38] |
Orege JI, Oderinde O, Kifle GA, et al. (2022) Recent advances in heterogeneous catalysis for green biodiesel production by transesterification. Energy Convers Manage 258: 115406. https://doi.org/10.1016/j.enconman.2022.115406 doi: 10.1016/j.enconman.2022.115406
|
| [39] |
Bhuiya M, Rasul M, Khan M, et al. (2016) Prospects of 2nd generation biodiesel as a sustainable fuel—Part: 1 selection of feedstocks, oil extraction techniques and conversion technologies. Renewable Sustainable Energy Rev 55: 1109-1128. https://doi.org/10.1016/j.rser.2015.04.163 doi: 10.1016/j.rser.2015.04.163
|
| [40] |
Gaurav N, Sivasankari S, Kiran G, et al. (2017) Utilization of bioresources for sustainable biofuels: A review. Renewable Sustainable Energy Rev 77: 205-214. https://doi.org/10.1016/j.rser.2017.01.070 doi: 10.1016/j.rser.2017.01.070
|
| [41] |
Bindra S, Sharma R, Khan A, et al. (2017) Renewable energy sources in different generations of bio-fuels with special emphasis on microalgae derived biodiesel as sustainable industrial fuel model. Biosci Biotechnol Res Asia 14: 259-274. https://doi.org/10.13005/bbra/2443 doi: 10.13005/bbra/2443
|
| [42] |
Hamza M, Ayoub M, Shamsuddin R, et al. (2021) A review on the waste biomass derived catalysts for biodiesel production. Environ Technol Innovation 21: 101200. https://doi.org/10.1016/j.eti.2020.101200 doi: 10.1016/j.eti.2020.101200
|
| [43] |
Hussain F, Alshahrani S, Abbas MM, et al. (2021) Waste animal bones as catalysts for biodiesel production: A mini review. Catalysts 11: 630. https://doi.org/10.3390/catal11050630 doi: 10.3390/catal11050630
|
| [44] |
Yang LM, Lv PM, Yuan ZH, et al. (2012) Synthesis of biodiesel by different carriers supported KOH catalyst. Adv Mater Res 581: 197-201. https://doi.org/10.4028/www.scientific.net/AMR.581-582.197 doi: 10.4028/www.scientific.net/AMR.581-582.197
|
| [45] |
Okechukwu OD, Joseph E, Nonso UC, et al. (2022) Improving heterogeneous catalysis for biodiesel production process. Cleaner Chem Eng 3: 100038. https://doi.org/10.1016/j.clce.2022.100038 doi: 10.1016/j.clce.2022.100038
|
| [46] |
Ferreira RSB, dos Passos RM, Sampaio KA, et al. (2019) Heterogeneous catalysts for biodiesel production: A review. Food Public Health 9: 125-137. https://doi.org/10.5923/j.fph.20190904.04 doi: 10.5923/j.fph.20190904.04
|
| [47] | Efeovbokhan VE, Omoleye JA, Kalu EE, et al. (2017) Kinetics of base catalysed trans-esterification of jatropha oil using potassium hydroxide extract from ripe plantain peels. Int J Appl Eng Res 12: 4539-4548. Available from: https://www.ripublication.com/ijaer17/ijaerv12n14_62.pdf. |
| [48] |
Hsiao MC, Liao PH, Lan NV, et al. (2021) Enhancement of biodiesel production from high-acid-value waste cooking oil via a microwave reactor using a homogeneous alkaline catalyst. Energies 14: 437. https://doi.org/10.3390/en14020437 doi: 10.3390/en14020437
|
| [49] |
Awogbemi O, Onuh EI, Inambao FL (2019) Comparative study of properties and fatty acid composition of some neat vegetable oils and waste cooking oils. Int J Low-Carbon Technol 14: 417-425. https://doi.org/10.1093/ijlct/ctz038 doi: 10.1093/ijlct/ctz038
|
| [50] |
Chanakaewsomboon I, Phoungthong K, Palamanit A, et al. (2023) Biodiesel produced using potassium methoxide homogeneous alkaline catalyst: Effects of various factors on soap formation. Biomass Convers Biorefin 13: 9237-9247. https://doi.org/10.1007/s13399-021-01787-1 doi: 10.1007/s13399-021-01787-1
|
| [51] |
Hsiao MC, Lin WT, Chiu WC, et al. (2021) Two-Stage biodiesel synthesis from used cooking oil with a high acid value via an ultrasound-assisted method. Energies 14: 3703. https://doi.org/10.3390/en14123703 doi: 10.3390/en14123703
|
| [52] |
Ayodeji A, Gozirim C, Cedar A, et al. (2023) Production of waste vegetable oil biodiesel using calcined periwinkle shells as catalyst. Chem Pap 77: 6647-6654. https://doi.org/10.1007/s11696-023-02965-3 doi: 10.1007/s11696-023-02965-3
|
| [53] |
Roslan NA, Abidin SZ, Abdullah NO, et al. (2022) Esterification reaction of free fatty acid in used cooking oil using sulfonated hypercrosslinked exchange resin as catalyst. Chem Eng Res Des 180: 414-424. https://doi.org/10.1016/j.cherd.2021.10.020 doi: 10.1016/j.cherd.2021.10.020
|
| [54] |
Chowdhury A, Sarkar D, Mitra D (2016) Esterification of free fatty acids derived from waste cooking oil with octanol: Process optimization and kinetic modeling. Chem Eng Technol 39: 730-740. https://doi.org/10.1002/ceat.201400745 doi: 10.1002/ceat.201400745
|
| [55] |
Oo YM, Prateepchaikul G, Somnuk K (2021) Two-stage continuous production process for fatty acid methyl ester from high FFA crude palm oil using rotor-stator hydrocavitation. Ultrason Sonochem 73: 105529. https://doi.org/10.1016/j.ultsonch.2021.105529 doi: 10.1016/j.ultsonch.2021.105529
|
| [56] |
Tovar AM, Valencia LF, Villa AL (2024) Life cycle assessment of Colombian cocoa pod husk transformation into value-added products. Bioresour Technol Rep 2024: 101772. https://doi.org/10.1016/j.biteb.2024.101772 doi: 10.1016/j.biteb.2024.101772
|
| [57] |
Xue S, Li M, Jiang J, et al. (2019) Phosphogypsum stabilization of bauxite residue: conversion of its alkaline characteristics. J Environ Sci 77: 1-10. https://doi.org/10.1016/j.jes.2018.05.016 doi: 10.1016/j.jes.2018.05.016
|
| [58] |
Özgür C (2021) Optimization of biodiesel yield and diesel engine performance from waste cooking oil by response surface method (RSM.). Pet Sci Technol 39: 683-703. https://doi.org/10.1080/10916466.2021.1954019 doi: 10.1080/10916466.2021.1954019
|
| [59] |
Tavizón-Pozos JA, Chavez-Esquivel G, Suárez-Toriello VA, et al. (2021) State of art of alkaline earth metal oxides catalysts used in the transesterification of oils for biodiesel production. Energies 14: 1031. https://doi.org/10.3390/en14041031 doi: 10.3390/en14041031
|
| [60] |
Maroa S, Inambao F (2021) A review of sustainable biodiesel production using biomass derived heterogeneous catalysts. Eng Life Sci 21: 790-824. https://doi.org/10.1002/elsc.202100025 doi: 10.1002/elsc.202100025
|
| [61] |
Lee HV, Juan JC, Yun Hin TY, et al. (2016) Environment-friendly heterogeneous alkaline-based mixed metal oxide catalysts for biodiesel production. Energies 9: 611. https://doi.org/10.3390/en9080611 doi: 10.3390/en9080611
|
| [62] | Ofori P (2017) Production of potassium hydroxide (KOH) from plant biomass: The case of cocoa pod husks and plantain peels. Master's thesis, Kwame Nkrumah University of Science and Technology, Kumasi. Available from: PRODUCTION-OF-POTASSIUM-HYDROXIDE-KOH-FROM-PLANT-BIOMASS-THE-CASE-OF-COCOA-POD-HUSKS-AND-PLANTAIN-PEELS.pdf. |
| [63] |
Xie W, Li J (2023) Magnetic solid catalysts for sustainable and cleaner biodiesel production: A comprehensive review. Renewable Sustainable Energy Rev 171: 113017. https://doi.org/10.1016/j.rser.2022.113017 doi: 10.1016/j.rser.2022.113017
|
| [64] |
Qu T, Niu S, Zhang X, et al. (2021) Preparation of calcium modified Zn-Ce/Al2O3 heterogeneous catalyst for biodiesel production through transesterification of palm oil with methanol optimized by response surface methodology. Fuel 284: 118986. https://doi.org/10.1016/j.fuel.2020.118986 doi: 10.1016/j.fuel.2020.118986
|
| [65] |
Gülüm M, Yesilyurt MK, Bilgin A (2020) The modeling and analysis of transesterification reaction conditions in the selection of optimal biodiesel yield and viscosity. Environ Sci Pollut Res 27: 10351-10366. https://doi.org/10.1007/s11356-019-07473-0 doi: 10.1007/s11356-019-07473-0
|
| [66] |
Hassan MM, Fadhil AB (2025) Development of an effective solid base catalyst from potassium based chicken bone (K-CBs) composite for biodiesel production from a mixture of non-edible feedstocks. Energy Sources, Part A 47: 8056-8071. https://doi.org/10.1080/15567036.2021.1927253 doi: 10.1080/15567036.2021.1927253
|
| [67] |
Yadav M, Singh V, Sharma YC (2017) Methyl transesterification of waste cooking oil using a laboratory synthesized reusable heterogeneous base catalyst: Process optimization and homogeneity study of catalyst. Energy Convers Manage 148: 1438-1452. https://doi.org/10.1016/j.enconman.2017.06.024 doi: 10.1016/j.enconman.2017.06.024
|
| [68] |
Dong Z, Dong K, Li H, et al. (2025) Progress and challenges in the process of using solid waste as a catalyst for biodiesel synthesis. Molecules 30: 3243. https://doi.org/10.3390/molecules30153243 doi: 10.3390/molecules30153243
|
| [69] |
Faruque MO, Razzak SA, Hossain MM (2020) Application of heterogeneous catalysts for biodiesel production from microalgal oil—A review. Catalysts 10: 1025. https://doi.org/10.3390/catal10091025 doi: 10.3390/catal10091025
|
| [70] | Ismail S, Ahmed AS, Anr R, et al. (2016) Biodiesel production from castor oil by using calcium oxide derived from mud clam shell. J Renewable Energy. https://doi.org/10.1155/2016/5274917 |
| [71] |
Miyuranga KV, Arachchige US, Marso T (2023) Biodiesel production through the transesterification of waste cooking oil over typical heterogeneous base or acid catalysts. Catalysts 13: 546. https://doi.org/10.3390/catal13030546 doi: 10.3390/catal13030546
|
| [72] |
Ajala E, Ajala M, Okedere O, et al. (2021) Synthesis of solid catalyst from natural calcite for biodiesel production: Case study of palm kernel oil in an optimization study using definitive screening design. Biofuels 12: 703-714. https://doi.org/10.1080/17597269.2018.1532752 doi: 10.1080/17597269.2018.1532752
|
| [73] |
Animasaun DA, Ameen MO, Belewu MA (2021) Protocol for biodiesel production by base-catalyzed transesterification method. In Biofuels and Biodiesel, 103-113. https://doi.org/10.1007/978-1-0716-1323-8_7 doi: 10.1007/978-1-0716-1323-8_7
|
| [74] | Kalsoom M, El Zerey-Belaskri A, Nadeem F, et al. (2017) Fatty acid chain length optimization for biodiesel production using different chemical and biochemical approaches—a comprehensive review. Int J Chem Biochem Sci 11: 75-94. Available from: https://www.iscientific.org/wp-content/uploads/2020/05/10-IJCBS-17-11-10.pdf. |
| [75] |
Maina L, Rabiu A, Ojumu T, et al. (2023) An investigation of the potential of a bifunctional catalyst in biodiesel production from low-cost feedstocks. Waste Biomass Valorization 14: 805-821. https://doi.org/10.1007/s12649-022-01862-2 doi: 10.1007/s12649-022-01862-2
|
| [76] |
Maheshwari AS, Chellani JG (2012) Correlations for pour point and cloud point of middle and heavy distillates using density and distillation temperatures. Fuel 98: 55-60. https://doi.org/10.1016/j.fuel.2012.02.034 doi: 10.1016/j.fuel.2012.02.034
|
| [77] |
Kumar S, Shamsuddin MR, Farabi MA, et al. (2020) Production of methyl esters from waste cooking oil and chicken fat oil via simultaneous esterification and transesterification using acid catalyst. Energy Convers Manage 226: 113366. https://doi.org/10.1016/j.enconman.2020.113366 doi: 10.1016/j.enconman.2020.113366
|
| [78] |
Nisa S, Hanif MA, Rashid U, et al. (2021) Trends in widely used catalysts for fatty acid methyl esters (Fame) production: A review. Catalysts 11: 1085. https://doi.org/10.3390/catal11091085 doi: 10.3390/catal11091085
|
| [79] |
Rashid IM, Atiya MA, Hameed B (2015) Production of biodiesel from waste cooking oil using CaO-egg shell waste derived heterogeneous catalyst. Int J Sci Res 6: 94-103. https://doi.org/10.21275/ART20177723 doi: 10.21275/ART20177723
|
| [80] |
Haq IU, Akram A, Nawaz A (2021) Comparative analysis of various waste cooking oils for esterification and transesterification processes to produce biodiesel. Green Chem Lett Rev 14: 462-473. https://doi.org/10.1080/17518253.2021.1941305 doi: 10.1080/17518253.2021.1941305
|
| [81] |
Kedir WM, Wondimu KT, Weldegrum GS (2023) Optimization and characterization of biodiesel from waste cooking oil using modified CaO catalyst derived from snail shell. Heliyon 9: e16475. https://doi.org/10.1016/j.heliyon.2023.e16475 doi: 10.1016/j.heliyon.2023.e16475
|
| [82] |
Li G, Hou B, Wang A, et al. (2019) Making JP‐10 superfuel affordable with a lignocellulosic platform compound. Angew Chem Int Ed 58: 12154-12158. https://doi.org/10.1002/anie.201906744 doi: 10.1002/anie.201906744
|
| [83] |
Kim D, Martz J, Abdul-Nour A (2017) A six-component surrogate for emulating the physical and chemical characteristics of conventional and alternative jet fuels and their blends. Combust Flame 179: 86-94. https://doi.org/10.1016/j.combustflame.2017.01.025 doi: 10.1016/j.combustflame.2017.01.025
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Figures(6) / Tables(11)
Vincent E. Efeovbokhan, Ubong E. Usoro, Omololu O. Fagbiele, Olubunmi G. Abatan. Valorization of waste cooking oil, plantain peel and snail shell for the optimization of biodiesel production[J]. AIMS Energy, 2026, 14(1): 89-114. doi: 10.3934/energy.2026004
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