scholarly journals By-products from methyl ester oil production and their thermal-emission properties

2008 ◽  
Vol 54 (No. 1) ◽  
pp. 9-21 ◽  
Author(s):  
J. Bradna ◽  
J. Malaťák
Keyword(s):  
Methyl Ester ◽  
Alternative Fuels ◽  
Seed Oil ◽  
Thermal Emission ◽  
Methyl Esters ◽  
Specific Weight ◽  
Flue Gases ◽  
Rape Seed ◽  
By Products

With the exhaustion of fossil energy sources in sight, the importance of the renewable sources of energy becomes one of the major conditions for permanently sustainable development not only in agriculture, but also in the society as a whole. The growing use of biodiesel has opened other areas of utilising the by-products from the manufacture of rape seed oil methyl ester (FARME) as an energy source, used in the combustion equipment designed for these alternative fuels. The aim of this paper is to assess the feasibility of utilising the by-products from the production of rape seed methyl ester as a source of energy, from ecology and economy aspects of the combustion equipment used. Therefore, the study is focused on the concentration of emissions generated by burning FARME, and distillation of residuals from FARME production plants. An important objective of this study lies in the determination of the stoichiometry characteristics of rape seed oil methyl esters and distillation residuals from FARME production plants. The following parameters are set by calculations: fuel heating power, oxygen amount (air) necessary for ideal combustion, flue gases amount and composition, and flue gases specific weight.

Minor Components in Vegetable Oil Methyl Esters I: Sterols in Rape Seed Oil Methyl Ester

Lipid / Fett ◽  
1994 ◽  
Vol 96 (10) ◽  
pp. 379-386 ◽  
Author(s):  
Christina Plank ◽  
Eberhard Lorbeer
Keyword(s):  
Methyl Ester ◽  
Vegetable Oil ◽  
Seed Oil ◽  
Methyl Esters ◽  
Minor Components ◽  
Rape Seed

Comparison of Two Infrared Methods for the Determination of Isolated Trans Unsaturation in Fats, Oils, and Methyl Ester Derivatives

1971 ◽  
Vol 54 (6) ◽  
pp. 1288-1292
Author(s):  
Anita Huang ◽  
David Firestone
Keyword(s):  
Fatty Acids ◽  
Methyl Ester ◽  
Rapid Method ◽  
Unsaturated Fatty Acids ◽  
Methyl Esters ◽  
Tentative Method ◽  
Trans Isomers ◽  
Sample Matrix ◽  
Infrared Methods

Abstract A study was made to compare the rapid method reported by Allen with the tentative method of the American Oil Chemists’ Society for the determination of isolated (unconjugated) trans isomers of unsaturated fatty acids. The rapid method was found to be less accurate. The accuracy of the rapid method can be improved by using an oil or methyl ester matrix with the same composition as the sample matrix for the determination of K-and f-values used for calculation of per cent trans isomers. Results obtained with both methods for methyl esters were more accurate than results for vegetable oils. An analysis of variance was performed to compare the methods.

scholarly journals Selected physical properties of liquid biofuels

2013 ◽  
Vol 59 (No. 4) ◽  
pp. 121-127
Author(s):  
P. Trávníček ◽  
M. Valach ◽  
Z. Hlaváčová ◽  
J. Mareček ◽  
T. Vítěz ◽  
...  
Keyword(s):  
Shear Stress ◽  
Shear Rate ◽  
Methyl Ester ◽  
Physical Properties ◽  
Methyl Esters ◽  
Calorific Value ◽  
Diesel Oil ◽  
Rapeseed Methyl Ester ◽  
Control Samples

The goal of this study was the determination of basic physical properties such as density, calorific value and rheological properties of liquid biofuels. Biofuels on the base of bioethanol and rapeseed methyl ester were chosen. Following control samples were selected: diesel oil without admixture of methyl esters and commercially available diesel oils with small amount of methyl ester admixture (6.2 and 6.5%). Dynamic viscosities of individual samples were measured in the range from –10°C to 50°C. Then dependence of shear rate on shear stress was measured at temperatures –10, 0, 20 and 40°C. The most of samples showed the Newtonian behaviour. However, samples with high content of methyl esters or pure methyl esters showed thixotropy behaviour at the low temperature.

Synthesis of Methyl Ester from Rice Bran Oil through the Esterification Reaction

2020 ◽  
Vol 851 ◽  
pp. 164-171 ◽  
Author(s):  
Aman Santoso ◽  
Abdurrohman ◽  
Anugrah Ricky Wijaya ◽  
Dedek Sukarianingsih ◽  
Sumari ◽  
...  
Keyword(s):  
Refractive Index ◽  
Methyl Ester ◽  
Vegetable Oil ◽  
Rice Bran ◽  
Rice Bran Oil ◽  
Methyl Esters ◽  
Acid Number ◽  
Esterification Reaction

Vegetable oil is one of rice bran components. As triglycerides, vegetable oil can be converted to fatty acid and alkyl esters for further treatments. Synthesis of alkyl ester oil can be carried out by esterification or transesterification reaction, depending on the quality of the oil and the catalyst. The purposes of this study are 1) Rice bran oil isolation, 2) Oil esterification 3) Characterization and identification of the methyl ester that compose rice bran oil. The stages in this research are 1) Extraction of rice bran oil, 2) Synthesis of methyl ester from rice bran through esterification reaction, 3) Methyl ester characterization of rice bran oil and its potential test as biodiesel included determination of density, viscosity, refractive index, and acid number test, 4) The identification of synthesized methyl esters composition using GC-MS. The results showed that rice bran oil has a yield of 18.09%. Synthesis of methyl esters from rice bran oil through the esterification reaction with a catalyst acid yields 72.37%. The characters of the synthesized methyl ester are on the range of biodiesel quality standards, namely, the density is 0.850 g/mL, viscosity is 4.73 cSt, a refractive index is 1.45871, and an acid number is 0.76 g KOH/g methyl ester, therefore it is claimed that the synthesized methyl esters have the potential as biodiesel. The GC-MS result showed the presence of compounds methyl tetradecanoate (0.38%), methyl hexadecanoate (40.67%), methyl 9-octadecenoate (53.68%), methyl octadecanoate (5.02%), and methyl eicosanoate (0.14%).

Gas Chromatographic Determination of Trans Unsaturation in Margarine: Collaborative Study

1985 ◽  
Vol 68 (1) ◽  
pp. 46-51 ◽  
Author(s):  
Lawrence Gildenberg ◽  
David Firestone
Keyword(s):  
Methyl Ester ◽  
Statistical Data ◽  
Methyl Esters ◽  
Collaborative Study ◽  
Chromatographic Determination ◽  
Infrared Analysis ◽  
Trans Unsaturation ◽  
Coefficients Of Variation ◽  
International Collaborative Study

Abstract An international collaborative study of a gas chromatographic (GC) method for the determination of trans unsaturation in margarine was conducted in 1980. Thirteen collaborators analyzed a set of 2 of 3 known mixtures of methyl esters and 4 margarine methyl ester samples. Two of the margarine methyl ester samples were blind duplicates. The experimental data were subjected to statistical analysis to determine within- and between-laboratory variation. The statistical data were in excellent agreement with data from a collaborative study of the AOACIUPAC GC method for the determination of methyl esters of fatty acids. Coefficients of variation (CVs) for components in the range of 4-40% were comparable (CV 2-6% for soybean oil methyl esters (AOAC-IUPAC study) as well as for margarine methyl esters (this study)). Good recoveries of total trans acids were obtained and betweenlaboratory as well as within-laboratory CVs were consistently better for the determination of total trans acids by GC vs infrared analysis. The GC method for determining trans unsaturation in margarine has been adopted official first action.

Investigation of Papaya Seed Methyl Ester Blended Diesel for Emission Reduction in Direct Injection Engines

2019 ◽  
Vol 11 (4) ◽  
Author(s):  
J. Hemanandh ◽  
S. Ganesan ◽  
A. Shaik Fiaz ◽  
P. Gunasekar
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Emission Reduction ◽  
Seed Oil ◽  
Methyl Esters ◽  
Direct Injection ◽  
Direct Injection Engines ◽  
Full Load ◽  
Toxic Gases ◽  
Papaya Seed

The diesel engines are emitting toxic gases which affect the greenhouse gases. In this research, the methyl esters were extracted from waste papaya seed oil using transesterification process. The Direct Injection Kirloskar diesel engine at constant speed of 1500 rpm and compression ratio of 17.5:1 was used to test the fuel. The injection nozzle holes were varied from 3 to 4 holes. The emissions were recorded using AVL gas analyser. The 20% blend with 4-hole nozzle shows reduction in NOx, CO and CO2 emissions at full load. The performance is increased for 30% blend at full load.

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