ABSTRACT

Biodiesel represents a renewable and sustainable substitute for fossil fuels, providing both environmental and economic advantages. This research examined the production and fuel characteristics of biodiesel sourced from Cassia angustifolia seed oil (CASO), comparing two production techniques: one that employed an eggshells nanocatalyst (ESN) and another that did not use a catalyst. To the best of our knowledge, for the first time, CASO was analyzed as an alternative feedstock for biodiesel production by utilizing ESN. Eggshells, which are a plentiful waste product, were transformed into CaO nanocatalyst through calcination in muffle furnace, offering an eco-friendly and economically viable catalyst. CASO oil contained obtained by soxhlet apparatus is 25.08 %. Cassia angustifolia biodiesel (CABD)C yields were markedly increased in the process utilizing the ESN due to enhanced reaction efficiency. The fuel characteristics, including density, viscosity, cetane number, flash point, pour point, and calorific value, were assessed in accordance with ASTM D6751 and EN 14214 standards. The outcomes revealed that (CABD)C produced with the ESN displayed superior fuel attributes, such as decreased viscosity (3.0mm2/s) and acid value (0.30 mgKOH/g) as well as elevated calorific value (45.895mJ/Kg) and biodiesel (85.90%), in comparison to the CABD. The recorded flash point and fire point for (CABD)C were higher 135°C and 140°C respectively. This comparative analysis highlighted the potential of using ESN in (CABD)C synthesis, fostering waste utilization and sustainable energy alternatives. Keywords: Biodiesel, Cassia angustifolia, Eggshell nanocatalyst and Transesterification
Publication date: 15/03/2025

https://ijbpas.com/pdf/2025/March/MS_IJBPAS_2025_MARCH_SPCL_1034.pdf

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https://doi.org/10.31032/IJBPAS/2025/14.3.1034