Optimization of the Transesterification Reaction in Biodiesel Production and Determination of Density and Viscosity of Biodiesel/Diesel Blends at Several Temperatures

Santos, Rafael Oliveira dos; Compri, Ivo G.; Morandim-Giannetti, A. A.; Tôrres, Ricardo Belchior

doi:10.1021/je1010399

Cited by 4 publications

(2 citation statements)

References 29 publications

(35 reference statements)

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“…In addition, Santos et al [26] analysed transesterification variables for waste frying oil biodiesel (WFOB) and established equations for density and KV of WFOBÀdiesel blends at several temperatures. The density and KV of biodiesel were reported to be functions of several temperatures.…”

Section: Introductionmentioning

confidence: 99%

Optimization of coconut oil ethyl esters reaction variables and prediction model of its blends with diesel fuel for density and kinematic viscosity

2016

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This paper presents the synthesis of biodiesel from coconut oil sourced from Nigeria through base-catalyzed transesterification using potassium hydroxide (KOH) as catalyst and ethanol as solvent. Direct transesterification reactions were carried out due to low free fatty acid value (0.65 mg KOH/g oil). The reaction variables optimized were: KOH amount (0.5À2.25 wt.%), reaction temperature (30À80 C), reaction time (30À70 min) and ethanol to oil molar ratio (3À12). Physico-chemical properties of the coconut oil and fuel properties of the coconut oil ethyl esters (CNOEE) were determined using standard test methods, and the properties of the latter were compared with biodiesel standards. Also, the density and viscosity of diesel fuel blends (B5, B10, B20 and B50) with CNOEE were determined and the viscosities compared with that of the Grunberg and Nissan model. In this study, the optimum reaction variables obtained (KOH amount D 1.0 wt.%, ethanol/oil molar ratio D 6:1, reaction temperature D 70 C, reaction time D 60 min) gave a biodiesel yield of 97.20% and the fuel properties of CNOEE at the optimum conditions conformed to both ASTM D6751 and EU 14214 standards. There was agreement between the measured and estimated values for the density and viscosities of CNOEEÀdiesel blends. The results indicate that the density and viscosities of the blends increased with the increased of biodiesel percentage in the blends.

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Section: Introductionmentioning

confidence: 99%

Optimization of coconut oil ethyl esters reaction variables and prediction model of its blends with diesel fuel for density and kinematic viscosity

2016

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“…Recently, some studies have been carried out to investigate the variation of biodiesel properties after blending with diesel fuels. ,− However, no comprehensive study has been conducted to investigate the variations in density and viscosity of biodiesel prepared by blending of methyl and ethyl esters with diesel fuel. To address this lack of information, in this work several binary and ternary blends of methyl and ethyl ester biodiesels with diesel fuel were prepared, and the densities and viscosities were measured experimentally.…”

Section: Introductionmentioning

confidence: 99%

Densities and Viscosities of Binary Blends of Methyl Esters + Ethyl Esters and Ternary Blends of Methyl Esters + Ethyl Esters + Diesel Fuel from T = (293.15 to 358.15) K

et al. 2012

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In this work, density ρ and dynamic viscosity η of the binary mixtures of methyl esters (1) + ethyl esters (2) and ternary blends of methyl esters (1) + ethyl esters (2) + diesel fuel (3) were measured at various compositions and temperatures. The methyl and ethyl esters were produced through transesterification of palm and jatropha oils. The binary and ternary blends demonstrate temperature-dependent behaviors, and viscosities and densities of decreased nonlinearly and linearly with temperature, respectively. The results indicated that the increase in methyl ester contents increased the densities of the binary and ternary blends. The results also indicated that the blends of jatropha esters have higher densities and viscosities in comparison with those obtained from palm oil. In addition, with the decrease in the diesel fuel content the blends viscosities and densities increased due to the higher viscosities and densities of methyl and ethyl esters.

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Optimizing the synthesis of cobalt aluminate pigment using fractional factorial design

Gomes

Medeiros

Bomio

et al. 2015

Ceramics International

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Optimization of the Transesterification Reaction in Biodiesel Production and Determination of Density and Viscosity of Biodiesel/Diesel Blends at Several Temperatures

Cited by 4 publications

References 29 publications

Optimization of coconut oil ethyl esters reaction variables and prediction model of its blends with diesel fuel for density and kinematic viscosity

Optimization of coconut oil ethyl esters reaction variables and prediction model of its blends with diesel fuel for density and kinematic viscosity

Densities and Viscosities of Binary Blends of Methyl Esters + Ethyl Esters and Ternary Blends of Methyl Esters + Ethyl Esters + Diesel Fuel from T = (293.15 to 358.15) K

Optimizing the synthesis of cobalt aluminate pigment using fractional factorial design

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