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Biodiesel production from waste cooking oil using heterogeneous CaO/Zn catalyst: yield and reusability performance


Citation

Ali, Nur Afiqah and Khairuddin, Nozieana (2023) Biodiesel production from waste cooking oil using heterogeneous CaO/Zn catalyst: yield and reusability performance. Chiang Mai Journal of Science, 50 (6). pp. 1-15. ISSN 0125-2526; ESSN: 2465-3845

Abstract

Biodiesel is a renewable, biodegradable, and non-toxic fuel derived from vegetable oils, animal fats, or recycled cooking oils. Biodiesel can be used as a direct replacement for diesel in diesel engines with minimal or no modification, and it has several advantages over conventional diesel. Eggshells, on the other hand, are composed mainly of calcium carbonate (CaCO3), a valuable resource for various industrial and agricultural applications. Improper disposal of eggshells can cause environmental pollution and discarding of eggshells in landfills takes up valuable space and emits potent greenhouse gases such as methane. The current study focuses on biodiesel production from waste cooking oil (WCO) using heterogeneous catalysts from eggshells impregnated with Zinc (Zn) metal. The transesterification process can produce biodiesel using WCO in the presence of a catalyst. The free fatty acid (FFA) of WCO is 0.45 mg KOH/g lower, enabling the transesterification process. The CaCO3 present in the eggshell will be converted into calcium oxide (CaO) after calcination. SEM analysis showed the catalysts morphology (CaO and CaO/Zn) changes after undergoing calcination and zinc impregnation processes. In this study, eggshells were utilized as a potential solid catalyst for biodiesel synthesis through transesterification. The reusability of the catalyst was also investigated. The reused catalyst produced an average yield of 65%.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Humanities, Management and Science
DOI Number: https://doi.org/10.12982/CMJS.2023.070
Publisher: Faculty of Science, Chiangmai University
Keywords: Transesterification; Biodiesel; Calcium carbonate; Calcium oxide; Zinc metal; Fossil fuel; Industry; Innovation and infrastructure; Sustainable cities and communities
Depositing User: Ms. Che Wa Zakaria
Date Deposited: 08 Aug 2024 07:47
Last Modified: 08 Aug 2024 07:47
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.12982/CMJS.2023.070
URI: http://psasir.upm.edu.my/id/eprint/106884
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