Viscosities and Densities of Binary Mixtures of Coconut + Colza and Coconut + Soybean Biodiesel at Various Temperatures

Abstract

Viscosity η and density ρ of binary mixtures of coconut + colza and coconut + soybean biodiesel have been measured over the whole composition range at T = (293.15, 313.15, 333.15, 353.15, and 373.15) K and at atmospheric pressure. Densities and viscosities data were correlated with R-square adjustment and the Andrade equation, respectively, with good agreement. The deviations of viscosities (Δη) have been calculated from the experimental data. To predict the density and viscosity we have used Joback’s method and a group contribution model proposed by Ceriani et al. (J. Chem. Eng. Data 2008, 53, 877−880), respectively.

Densities of canola, jatropha and soapnut biodiesel at elevated temperatures and pressures

“…Baroutian et al [13] reported that the density of palm oil biodiesel decreased linearly with increase in temperature. Similarly, Feitosa et al [14] studied the density of mixtures of coconut and soybean biodiesel and found them to be linear up to 373 K. The densities showed a smaller change in room temperature for all pressures compared to the higher temperatures. density data were regressed for five pressures and temperatures between room temperature and 523 K. Table 6 shows the summary of the regression constant and R 2 values for jatropha biodiesel B100, B80, B50 and B20.…”

Determinação de dados experimentais de equilíbrio líquido-líquido para sistemas contendo éster metílico de ácidos graxos, glicerina bruta e metanol

“…O conhecimento das propriedades do biodiesel e glicerol, bem como sua influência nas interações intermoleculares contribui para o processo de modelagem, simulação e otimização de processos, plantas industriais e em projetos de equipamentos que envolvem transferência de massa, calor e movimento (FEITOSA et al;BROCK et al, 2008). A composição e temperatura dos sistemas influenciam nas propriedades dos compostos puros, portanto conhecer as composições e temperaturas de processos auxiliam na determinação de parâmetros termodinâmicos e dados físico-químicos dos sistemas.…”

Production of the Lowest Viscosity Waste Cooking Oil Biodiesel by Using Ethanol and Potassium Hydroxide

“…Renewable fuels has gained attention during the last few decades because of the decreasing oil supply and increasing environmental consciousness [1]. One of these fuels, biodiesel is an attractive alternative to reduce dependence on fuels derived from petroleum [2].…”

“…Biodiesel has been of great interest to researchers. This interest is based on a number of great properties as: (1) It is a sulfur-free, non-toxic and biodegradable fuel and provides engine lubricity to low sulfur diesel fuels [4], [5]. (2) It does not contribute to a net rise in the level of carbon dioxide in the atmosphere and leads to minimize the intensity of greenhouse effect [6].…”