Abd Rahman Marlan, Mohammad Nahid Siddiqui, Tawfik A. Saleh, Suriati Eka Putri
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Abstract
The escalating global energy demand, predominantly satisfied by fossil fuels, has led to severe environmental repercussions, including the emission of harmful pollutants and the depletion of non-renewable resources. This study explores the synthesis of green heterogeneous ZnO/SiO2 derived from date leaves ash (DLA) as an innovative catalyst for biodiesel production, specifically using waste cooking oil (WCO) as feedstock. WCO, a prevalent byproduct in the food industry, poses significant environmental challenges, yet it offers a valuable opportunity for sustainable energy generation. The transesterification process in this study highlights additional techniques to improve the product by focusing on the intermediate species, which is essential to enhance the conversion of triglycerides in WCO to biodiesel, on the other hand enhanced by the application of the synthesized catalyst, which exhibits superior catalytic activity and stability. The research also highlights the advantages of using heterogeneous catalysts over traditional homogeneous catalysts, including ease of separation, reusability, and reduced environmental impact. The findings demonstrate that the DLA-derived ZnO/SiO2 catalyst not only improves biodiesel yield but also contributes to waste management by repurposing WCO, thereby mitigating its adverse effects on public health and the environment. This work underscores the potential of green chemistry in developing efficient, eco-friendly catalysts that can significantly advance the biodiesel industry. This research advocates the integration of sustainable practices in energy production, emphasizing the importance of renewable resources in addressing the pressing challenges of energy sustainability and environmental protection. Ultimately, several highlights of this research have led to over 95% of WCO being converted to biodiesel using ZnO/SiO2-30 at 60 °C.
期刊介绍：
Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.
The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.
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