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Biodiesel production is the process of producing the biofuel, biodiesel, through the chemical reactions of transesterification and esterification.[1] This process renders a product (chemistry) and by-products.
The fats and oils react with short-chain alcohols (typically methanol or ethanol). The alcohols used should be of low molecular weight. Ethanol is the most used because of its low cost, however, greater conversions into biodiesel can be reached using methanol. Although the transesterification reaction can be catalyzed by either acids or bases, the base-catalyzed reaction is more common. This path has lower reaction times and catalyst cost than those acid catalysis. However, alkaline catalysis has the disadvantage of high sensitivity to both water and free fatty acids present in the oils.[2]
- ^ Leung, Dennis Y.C.; Wu, Xuan; Leung, M.K.H. (April 2010). "A review on biodiesel production using catalyzed transesterification". Applied Energy. 87 (4): 1083–1095. Bibcode:2010ApEn...87.1083L. doi:10.1016/j.apenergy.2009.10.006.
- ^ Anastopoulos, George; Zannikou, Ypatia; Stournas, Stamoulis; Kalligeros, Stamatis (2009). "Transesterification of Vegetable Oils with Ethanol and Characterization of the Key Fuel Properties of Ethyl Esters". Energies. 2 (5 June 2009): 362–376. doi:10.3390/en20200362.