Fuel property enhancement of biodiesel fuels from common and alternative feedstocks via complementary blending

Abstract

a b s t r a c tFatty acid methyl esters (biodiesel) prepared from field pennycress and meadowfoam seed oils were blended with methyl esters from camelina, cottonseed, palm, and soybean oils in an effort to ameliorate technical deficiencies inherent to these biodiesel fuels. For instance, camelina, cottonseed, and soybean oil-derived biodiesels exhibited poor oxidative stabilities but satisfactory kinematic viscosities. Field pennycress and meadowfoam seed oil methyl esters yielded excellent cold flow properties but high kinematic viscosities. Thus, field pennycress and meadowfoam-derived biodiesel fuels were blended with the other biodiesels to simultaneously ameliorate cold flow, oxidative stability, and viscosity deficiencies inherent to the individual fuels. Highly linear correlations were noted between blend ratio and cold flow as well as viscosity after least squares statistical regression whereas a non-linear relationship was observed for oxidative stability. Equations generated from statistical regression were highly accurate at predicting KV, reasonably accurate for prediction of cold flow properties, and less accurate at predicting oxidative stability. In summary, complementary blending enhanced fuel properties such as cold flow, kinematic viscosity, and oxidative stability of biodiesel.Published by Elsevier Ltd.

Thermal Properties of the Blends of Methyl and Ethyl Esters Prepared from Babassu and Soybean Oils

“…Equilibration to room temperature and agitation preceded removal of sample aliquots for analysis. 9 Gas chromatography-mass spectrometry (GC-MS) analysis…”

“…At present, many alternatives are used to improve this problem of biodiesel, including addition of cold flow improvers, blending with petrodiesel, fractionating by crystallization and blending of biodiesels with different compositions. [8][9][10] Important properties of the pure esters and blends can be evaluated by thermoanalytical techniques, such as thermogravimetric analysis (TGA), differential thermogravimetric analysis (DTG) and differential scanning calorimetry (DSC), under different atmospheres. [11][12][13] When the TGA/DTG analysis is carried out in an oxidative atmosphere (mixture of air or oxygen and inert gas) with a linear temperature ramp, the maximum temperature is selected by where the sample weight is stable at the end of the experiment, implying that all chemical reactions have been completed.…”

Short‐chain esters enriched biofuel obtained from vegetable oil using molecular distillation

“…[26] Feedstock availability for biodiesel production differs substantially in consonance with geographic, soil, and weather conditions of a region. [27] Several crops, such as soybeans, corn, castor, peanuts, sunflowers, palm, cotton, canola, babassu, and others can be explored aiming for the production of biodiesel. Besides vegetable oils, animal fats, waste cooking oils, and algal oils have also been used for the same purpose.…”

The effect of alternative fuels injection timing on toxic substances formation in CI engines

“…The main activities are focused on improving the combustion process in the engine by optimizing the design and implementation of additional systems, limiting the production of harmful substances in the combustion chamber. These activities are limited, since the primary task of the internal combustion engine is to produce energy in a highly effective and efficient way [5,8,12].…”