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Biodiesel: The study of methyl esters loss in the glycerol phase at various conditions
Authors: Hájek Martin | Vávra Aleš | Skopal František | Měkotová Martina | Musil Martin
Year: 2018
Type of publication: článek v odborném periodiku
Name of source: Journal of Cleaner Production
Publisher name: Elsevier Science
Place: Oxford
Page from-to: 1573-1578
Titles:
Language Name Abstract Keywords
cze Bionafta: Studie úbytku metylesteru v glycerolové fázi za různých podmínek Úbytek metylesteru v glycerolové fázi byl studován pro tři metody transesterifikace zastavované neutralizací katalyzátoru pomocí CO2, CO2 s vodou pro urychlení separace a přesným množstvím kyseliny fosforečné. binafta; metanol; transesterifikace; glycerolová fáze; úbytek esteru
eng Biodiesel: The study of methyl esters loss in the glycerol phase at various conditions The methyl esters loss in the glycerol phase was studied for three methods of transesterification stopping by neutralisation of catalyst by (i) carbon dioxide gas, (ii) carbon dioxide gas with addition of water to accelerate the separation and (iii) exact amount of phosphoric acid. It was found that the addition of water caused increase of the esters loss. The distribution of methyl esters depending on higher fatty acids in the glycerol phase was also studied. The distribution was different for each method of stopping and also different from distribution in the input oil. In the case of stop by phosphoric acid, the methyl esters loss was studied in detail, because the formed methyl esters conform to EN 14214 without any purification of the ester phase. The statistical analysis of relationship between methyl ester loss and the independent variables (molar ratio of methanol to oil, catalyst amount, reaction temperature and time) including the distribution was carried out. The esters loss increase with increasing catalyst amount and reaction temperature, while the relationship between molar ratio and methanol to oil is ambiguous. Biodiesel; Methanol; Transesterification; Glycerol phase; Esters loss

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