Effect of temperature and composition on density, viscosity and thermal conductivity of fatty acid methyl esters from soybean, castor and Jatropha curcas oils

Ustra, Mara K.; Silva, Juliana R.F.; Ansolin, Marina; Balen, Manuela; Cantelli, Keli C.; Alkimim, Isabella P.; Mazutti, Márcio A.; Voll, Fernando Augusto Pedersen; Cabral, Vladimir Ferreira; Cardozo‐Filho, Lúcio; Corazza, Marcos L.; Oliveira, J. Vladimir

doi:10.1016/j.jct.2012.10.007

Cited by 30 publications

(15 citation statements)

References 9 publications

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“…Biodiesel viscosity is usually higher than that of diesel, and this higher viscosity level result in longer liquid penetration times and worse atomization [17,19] compared to the case with diesel fuel. Previous studies revealed that the density and viscosity of biodiesel depend on its composition and the temperature [20][21][22]. It was observed that both viscosity and density decrease as the temperature increases.…”

Section: Introductionmentioning

confidence: 98%

A Laboratory Study of the Effects of Wide Range Temperature on the Properties of Biodiesel Produced from Various Waste Vegetable Oils

Kassem

Çamur

2016

Waste Biomass Valor

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Biodiesel is an attractive alternative fuel for diesel engines produced from vegetable oils or animal fats by transesterification in the presence of a catalyst. The feedstocks used in this experiment for the production of biodiesel were waste frying oil (WFME) waste canola oil (WCME), and their different percentages are referred to as 25-WFME, 50-WFME and 75-WFME. The samples are sourced from Northern Cyprus. Also, biodiesel was produced at Mechanical Engineering research laboratory. The purpose of this study is to investigate the effect of the temperature on the kinematic, dynamic viscosity and density of the biodiesel samples. Also, this paper examines the cold flow properties as well as the kinematic viscosity, cloud point (CP) and pour point (PP) of the produced biodiesel. The density, kinematic viscosity, CP and PP measurements were made according to ASTM standards. The properties of the produced biodiesel such as viscosity and density were measured within temperature ranges 20-270°C in steps of 10°C. The kinematic viscosity, CP and PP were measured within temperature range -10-20°C. In this study, five general correlations were presented for estimating the density and kinematic viscosity of the blends at several temperatures. The experimental investigation showed that CP and PP of WCME increased with an increase in the concentration of WFME. Furthermore, empirical equations for predicting the viscosity, density, CP and PP for biodiesel samples give values in good agreement with experiments. The results obtained show that with the increase of the temperature, kinematic viscosity, dynamic viscosity and density decreased.

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Section: Introductionmentioning

confidence: 98%

A Laboratory Study of the Effects of Wide Range Temperature on the Properties of Biodiesel Produced from Various Waste Vegetable Oils

Kassem

Çamur

2016

Waste Biomass Valor

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“…Theses expected results were supported by the findings of Ustra et al . () for soybean, jatropha curcas , and castor oils at different temperature ranges.

k = a + b y + c x + {b_{1} y}^{2} + a_{1} \times x y + c_{1} x^{2}

where x is a (%, w/w) of soybean oil with sample, y is a temperature (C) of measurement and a , b , c , a 1 , b 1 , c 1 are the arbitrary coefficients (with 95% confidence bounds) shown (Table ).…”

Section: Resultsmentioning

confidence: 99%

“…The pycnometer was placed in a water bath without its lid to keep in equilibrium the temperature distribution (Ustra et al . ).…”

Section: Methodsmentioning

confidence: 97%

Effects of Temperature on Thermo‐Physical Properties of Roasted Peanut Paste (Arachis Hypogaea L.) Blended with Soybean Oil

Raigar

Mishra

2016

Journal of Food Quality

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The thermo-physical properties of peanut paste (PP) blended with varying amount of soybean oil (SO) (0-25%, w/w) were studied as functions of temperature (30-70C). Thermal conductivity (k), thermal diffusivity (a) and specific heat (C p ) were determined using the thermal pro analyzer (line heat source methods) while the density (q) was determined by the pycnometer. The k and a were in the range of 0.079-0.214W/m/Kand 0.067-0.164 m 2 /s that decreased with increase in temperature and the proportion of SO. The density (929-1047 kg/m 3 ) decreased with increasing temperature and SO content. The C p was found to range between (1.10-2.64) 3 10 23 kJ/kg/C, which also increased with increases in temperature and SO proportion in the blend. The calculated activation energy was higher for pure PP. A multiple regression polynomial equations were developed of k, a, C p and q, as a function of SO supplementation and temperature. PRACTICAL APPLICATIONSPeanut paste, butter and peanut-based ready-to-eat therapeutic food (RTE-TF) have been considered as an important protein and energy rich food in addition with macro and micro nutrients. These peanut-based products are mostly used for breakfast and for fighting with malnutrition. Peanut paste is a high viscous product retaining the strong aroma and flavor of the raw materials. The blending amount of soybean oil and varying temperature influences the physical, heat transfer characteristics, flow behavior and oil deterioration quality of the product while processing. This highly unique and conceptual findings on the thermo-physical changes of peanut paste as a function of temperature and amount of soybean oil blending is boon for industry involved in the food and equipment manufactures.

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“…As a promising type of organic PCMs, fatty acid, where general type is CH 3 CH 2n COOH, has been broadly investigated owing to their large thermal energy storage (TES) capability and reasonable thermal properties, such as large latent heat, good thermal stability, little supercooling or nonsupercooling, and low cost . However, it is worth to note that there are some deficiencies in the practical applications of fatty acids: The thermal conductivity is poor and leakage occurs when phase transition occurs …”

Section: Introductionmentioning

confidence: 99%

“…10,11 However, it is worth to note that there are some deficiencies in the practical applications of fatty acids: The thermal conductivity is poor and leakage occurs when phase transition occurs. [12][13][14][15][16] In recent years, with the aim to avoid leakage, researchers have developed various methods to encapsulate PCMs, such as direct adsorption, capsulation, and sol-gel method. [17][18][19][20][21] The direct adsorption method is commonly to use porous materials as carriers, such as expanded graphite, perlite, montmorillonite, bentonite, and diatomite.…”

Section: Introductionmentioning

confidence: 99%

Preparation and performances of palmitic acid/diatomite form‐stable composite phase change materials

Jia

Wang

et al. 2020

Int J Energy Res

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Summary Using palmitic acid (PA) as an organic phase change material (PCM), a series of PA/diatomite composite PCMs (CPCMs) composed of PA absorbed into diatomite mesopores with different mass contents were made through direct impregnation method. Nitrogen adsorption‐desorption curves indicated the porous structure of diatomite with the specific surface area and the mesopore peak at 40 m2/g and 3 to 5 nm, respectively. The form‐stability measurement indicated that the maximum mass loading capacity of PA was 55 wt%. The melting temperature and fusion enthalpy of the PA/diatomite CPCM (55 wt%) were calculated from DSC at 63°C and 88 J/g, respectively. The thermal cycle test implied that the PA/diatomite CPCM with 55‐wt% PA loading showed excellent thermal reliability after 1000 thermal cycles. Moreover, the composite has thermal conductivity at 0.5810 W/m·K and enhanced thermal storage/release rate. PA/diatomite CPCM (55 wt% PA) was a suitable candidate for modern building energy saving and industrial solar energy.

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Effect of temperature and composition on density, viscosity and thermal conductivity of fatty acid methyl esters from soybean, castor and Jatropha curcas oils

Cited by 30 publications

References 9 publications

A Laboratory Study of the Effects of Wide Range Temperature on the Properties of Biodiesel Produced from Various Waste Vegetable Oils

A Laboratory Study of the Effects of Wide Range Temperature on the Properties of Biodiesel Produced from Various Waste Vegetable Oils

Effects of Temperature on Thermo‐Physical Properties of Roasted Peanut Paste (Arachis Hypogaea L.) Blended with Soybean Oil

Preparation and performances of palmitic acid/diatomite form‐stable composite phase change materials

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