Energy and economic aspects of efficient radiative heating for biodiesel production: Prospects and challenges of using solid magnetic CaO/CoFe2O4 nano-catalyst

Shiva Aghababaeian, Mojtaba Beygzadeh, Maziar Dehghan, Farah-Sadat Halek and Mohammad Aminy

Energy, 2024, vol. 289, issue C

Abstract: Direct radiative heating using an infrared (IR) source is experimentally investigated in the production of biodiesel from waste edible oil using CaO and self-synthetized CaO/CoFe2O4 as heterogeneous solid catalysts. The nano-sized CaO/CoFe2O4 particles show 30 % lower specific energy (i.e. the required energy to produce 1-L biodiesel) than that of CaO for the case of radiative (IR) heating. Meanwhile, comparing the radiative and conventional heating methods shows that the specific energy and the reaction time are reduced by 75 % and up to 50 %. However, the specific cost (i.e. the cost required to produce 1-L biodiesel) corresponding to CaO/CoFe2O4 is higher than that of CaO by 36–56 %. The strong magnetic characteristic of CaO/CoFe2O4 makes the separation process easy and has a good potential for recycling purposes. Overall, CaO/CoFe2O4 under radiative heating showed the advantages of having a high yield efficiency, shorter reaction time, low specific energy, and ease of separation which make it a good candidate for large-scale productions, while the specific cost and cyclic performance are the present challenges and still require further studies.

Keywords: Biodiesel; Radiative heat transfer; Specific energy; Specific cost; Catalyst separation; Catalyst recovery and cyclic performance (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:289:y:2024:i:c:s0360544223033807

DOI: 10.1016/j.energy.2023.129986

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