Quality control of rapeseed oil methyl esters by determination of acyl conversion

1994 ◽  
Vol 71 (12) ◽  
pp. 1349-1352 ◽  
Author(s):  
Ján Cvengroš ◽  
Zuzana Cvengrošová
Keyword(s):  
Quality Control ◽  
Rapeseed Oil ◽  
Methyl Esters ◽  
Rapeseed Oil Methyl Esters

scholarly journals Use of Water-Fuel Mixture in Diesel Engines at Fishing Vessels

2017 ◽  
Vol 25 (2) ◽  
pp. 105-109
Author(s):  
Oleg Klyus ◽  
O. Bezyukov
Keyword(s):  
Rapeseed Oil ◽  
Methyl Esters ◽  
Active Material ◽  
Fuel Mixture ◽  
Diesel Oil ◽  
Injection System ◽  
Physical Parameters ◽  
Fishing Vessels ◽  
Laboratory Test Results ◽  
Rapeseed Oil Methyl Esters

Abstract The paper presents the laboratory test results determining physical parameters of fuel mixture made up of petroleum diesel oil, rapeseed oil methyl esters (up to 20%) and water (up to 2.5%). The obtained parameters prove that adding bio-components (rapeseed oil methyl esters) and water to fuel does not result in deterioration of their physical and chemical properties and are comparable to base fuel parameters, namely petroleum diesel oil. The mixture was a subject of bench testing with the use of a self-ignition engine by means of pre-catalytic fuel treatment. The treatment process consisted in fuel - catalytically active material direct contact on the atomizer body. At the comparable operational parameters for the engine, the obtained exhaust gases opacity was lower up to 60% due to the preliminary fuel mixture treatment in relation to the factory-made fuel injection system using petroleum diesel oil.

Rapeseed oil methyl esters with low phosphorus content

Lipid / Fett ◽  
1999 ◽  
Vol 101 (7) ◽  
pp. 261-265 ◽  
Author(s):  
Ján Cvengroš ◽  
Anna Pavlovičová ◽  
Gabriela Gladišová ◽  
Jiří Černý
Keyword(s):  
Rapeseed Oil ◽  
Phosphorus Content ◽  
Methyl Esters ◽  
Low Phosphorus ◽  
Rapeseed Oil Methyl Esters

THE PROBLEMS OF USING ALCOHOL BIOFUEL MIXTURES IN THE LITHUANIAN TRANSPORT SYSTEM

Transport ◽  
2009 ◽  
Vol 24 (1) ◽  
pp. 58-65 ◽  
Author(s):  
Sergejus Lebedevas ◽  
Galina Lebedeva
Keyword(s):  
Transport System ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Rapeseed Oil ◽  
Methyl Esters ◽  
Operating Characteristics ◽  
Fuel Oils ◽  
Key Aspects ◽  
Rapeseed Oil Methyl Esters

The article presents the technological aspects of the problems aimed at using alcohol biofuel mixtures in diesel engines kept in operation in Lithuania concerning a gradual replacement of fuel oils with biofuels. It is shown that three‐component fuels such as D‐RME‐E possess the motor characteristics close to mineral diesel fuel. The use of the EC standardized rapeseed oil methyl esters RME as a solvent allows compensating the unfavorable motor characteristics of ethanol E and increasing the number of biocomponents in the fuel at the same time. The key aspects of research on the indicator process and the operating characteristics of diesel engines running on alcohol biofuel mixtures are substantiated.

scholarly journals Use of NaNO3/SiAl as Heterogeneous Catalyst for Fatty Acid Methyl Ester Production from Rapeseed Oil

Catalysts ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1405
Author(s):  
José María Encinar ◽  
Juan Félix González ◽  
Gloria Martínez ◽  
Sergio Nogales-Delgado
Keyword(s):  
Fatty Acid ◽  
Heterogeneous Catalyst ◽  
Rapeseed Oil ◽  
Heterogeneous Catalysts ◽  
Methyl Esters ◽  
Acid Methyl Ester ◽  
Acid Methyl ◽  
Wide Range ◽  
Chemical Conditions

The use of heterogeneous catalysts to produce fatty acid methyl esters (FAME) through transesterification with methanol might contribute to both green chemistry and a circular economy, as the process can be simplified, not requiring additional stages to recover the catalyst once the reaction takes place. For this purpose, different catalysts are used, including a wide range of possibilities. In this research the use of NaNO3/SiAl as a heterogeneous catalyst for FAME production through transesterification of rapeseed oil with methanol is considered. A thorough characterization of the catalyst (including XDR and XPS analysis, SEM microscopy, lixiviation and reusability tests, among others), specific optimization of transesterification by using the final catalyst (considering catalyst amount, stirring rate, methanol/oil ratio, and temperature), and quality determination of the final biodiesel (following the UNE-EN 14214 standard) were carried out. In conclusion, 20 mmolNa·gsupport−1 (that is, NaNO3/SiAl 20/1) offered the best results, with a high activity (exceeding 99% w/w of FAMEs) without requiring higher impregnation amounts. The best chemical conditions for this heterogeneous catalyst were 5% w/w catalyst, 700 rpm, 9:1 methanol/oil ratio, and 65 °C, obtaining Ea = 73.3 kJ·mol−1 and a high-quality biodiesel, similar to those obtained through homogeneous catalysis. Consequently, this catalyst could be a suitable precursor for FAME production.

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