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Erschienen in: Energy, Ecology and Environment 4/2023

17.05.2023 | Original Article

Optimized recovery of transesterifiable oil from industrial fats, oil, and grease (FOG) esterified with H2SO4 catalyst extracted from discarded lead-acid batteries

verfasst von: Sarah Mae S. Utlang, Nole Mae S. Utlang, Emma Mie L. Paler, Rechielyn C.Salvatierra, Justin C. Paday, Dennis A. Mugot, Val Irvin F. Mabayo, Renato O. Arazo

Erschienen in: Energy, Ecology and Environment | Ausgabe 4/2023

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Abstract

The increasing demand for energy and the growing concerns over environmental issues have prompted researchers to explore alternative energy sources, such as biodiesel. Biodiesel is a renewable, non-toxic, and biodegradable fuel derived from vegetable oils, animal fats, and waste oils, making it a sustainable energy source. This study aimed to optimize the recovery of transesterifiable oil from industrial fats, oil, and grease (FOG) esterified with an H2SO4 catalyst extracted from discarded lead-acid batteries. In recovering the oil, a thermal process was employed to extract it from the raw FOG, followed by esterification with sulfuric acid derived from lead-acid batteries. Central composite design (CCD) of the response surface methodology (RSM) was used to optimize the operating variables, including methanol-to-oil ratio, catalyst loading, temperature, and reaction time. The optimized conditions resulted in a 96.47 ± 0.68% transesterifiable oil recovery using an 8:1 methanol-to-oil molar ratio, 8 v% of H2SO4 catalyst, and 4 h of reaction time at 50 °C. The recovered oil was characterized for various parameters: density, pH, free fatty acid (FFA) level, fatty acid profile, and functional groups. The results indicated that the recovered oil could be a suitable raw material for biodiesel production, as it possessed desirable properties such as low FFA content and a high percentage of unsaturated fatty acids.

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Metadaten
Titel
Optimized recovery of transesterifiable oil from industrial fats, oil, and grease (FOG) esterified with H2SO4 catalyst extracted from discarded lead-acid batteries
verfasst von
Sarah Mae S. Utlang
Nole Mae S. Utlang
Emma Mie L. Paler
Rechielyn C.Salvatierra
Justin C. Paday
Dennis A. Mugot
Val Irvin F. Mabayo
Renato O. Arazo
Publikationsdatum
17.05.2023
Verlag
Springer Berlin Heidelberg
Erschienen in
Energy, Ecology and Environment / Ausgabe 4/2023
Print ISSN: 2363-7692
Elektronische ISSN: 2363-8338
DOI
https://doi.org/10.1007/s40974-023-00283-8

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