Deep eutectic solvents for purification of waste cooking oil and crude biodiesel
| Autor: | Ana Petračić, Matea Gavran, Ana Škunca, Lucija Štajduhar, Aleksandra Sander |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Technologica Acta : Scientific/professional journal of chemistry and technology Volume 13 Issue 1 |
| ISSN: | 1840-0426 2232-7568 |
| DOI: | 10.5281/zenodo.4059934 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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