Acidity reduction of enzymatic biodiesel using alkaline washing

Nilva R. Uliana, André Polloni, Marshall Paliga, Josamaique G. Veneral, Marintho B. Quadri and J. Vladimir Oliveira

Renewable Energy, 2017, vol. 113, issue C, 393-396

Abstract: The aim of this communication is to report the reduction of biodiesel acidity by wet washing using aqueous/methanol NaOH solutions. For this purpose, some assays were carried out, varying temperature, methanol concentration, molar ratio of NaOH to FFA and the amount of NaOH solution, with results expressed in terms of final acidity and process yield. It is shown that 35 °C, 1 wt% of methanol, 1 NaOH:FFA molar ratio (i.e., 1 eqv, the stoichiometric relation), and 3 wt% of base solution in relation to crude biodiesel, resulting in a final FFA content of 0.19 wt% and around 96% of product yield.

Keywords: Biodiesel; Acidity; Wet washing; Sodium hydroxide; Methanol (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:113:y:2017:i:c:p:393-396

DOI: 10.1016/j.renene.2017.06.001

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