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deep eutectic solvents for purification of waste cooking oil and crude biodiesel

descriptionPublicationkeyboard_double_arrow_right Other literature type , Article 01 Jan 2020 Croatia English Publisher:Zenodo

Authors: Ana Škunca; Matea Gavran; Aleksandra Sander; Ana Petračić; Lucija Štajduhar;

doi: 10.5281/zenodo.4059934 , 10.5281/zenodo.4059933

deep eutectic solvents for purification of waste cooking oil and crude biodiesel

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Abstract

The goal of this work was to explore the applicability of deep eutectic solvents in biodiesel production process. Biodiesel was produced from waste cooking oil via base-catalysed transesterification. The efficacy of two base catalysts KOH and NaOH on the conversion of triglycerides into biodiesel was tested. Eutectic mixtures DES 1 (K2CO3 : C2H6O2 = 1 : 10) and DES 2 (C5H14ClNO : C2H6O2 = 1 : 2) were prepared. DES 1 was used for feedstock deacidification and DES 2 for biodiesel purification via extraction. Effects of DES 2 to biodiesel ratio and the extraction duration on free glycerol removal were tested. Samples were analysed using FTIR and 1H NMR spectroscopy. Synthesis of biodiesel was carried out for 3 h at 60 ° C with mass ratio KOH : methanol : oil = 1 : 40 : 100. DES 2 was effective for purification of biodiesel. Mass ratios 0.5:1 and 1:1 proved best and 45 minutes of extraction was enough to reduce free glycerol and increase the content of fatty acid methyl esters.

Country

Croatia

Related Organizations

University of Zagreb
Croatia
University of Zagreb, Faculty of Chemical Engineering and Technology
Croatia

Keywords

biodiesel, glycerol, extraction, deep eutectic solvent, waste edible oil, biodiesel ; glycerol ; extraction ; deep eutectic solvent ; waste edible oil

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