Liquid density of biofuel mixtures: 1-Heptanol+heptane system at pressures up to 140MPa and temperatures from 298.15K to 393.15K

Alaoui, Fatima Ezzahrae M’hamdi; Montero, Eduardo A.; Qiu, Guosheng; Aguilar, Fernando; Wu, Jiangtao

doi:10.1016/j.jct.2013.05.051

Cited by 38 publications

(49 citation statements)

References 77 publications

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“…This type of densitometer can be used to perform measurements in a broad range of temperature (from 263.15 to 473.15 K) and pressure (from 0 to 140 MPa). The experimental setup was similar to the one described in previous works [12,13]. The calibration of the densitometer was performed according to the procedure described by Comuñas et al [14] which is a modification of the procedure previously proposed by Lagourette et al [15].…”

Section: Measurement Technique Experimental Proceduresmentioning

confidence: 99%

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Liquid density of oxygenated additives to biofuels: 2-Butanol at pressures up to 140MPa and temperatures from (293.15 to 393.27)K

Dakkach

Aguilar

Alaoui

et al. 2015

The Journal of Chemical Thermodynamics

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Section: Measurement Technique Experimental Proceduresmentioning

confidence: 99%

“…In order to better correlate our values over our entire temperature and pressure ranges, i.e., to improve the previous representation (and consequently the evaluation of the derived properties); we use the following Tait-like equation, which has been used in our previous works [9][10][11][12][13]: …”

Section: New Tait Representationmentioning

confidence: 99%

Liquid density of oxygenated additives to biofuels: 2-Butanol at pressures up to 140MPa and temperatures from (293.15 to 393.27)K

Dakkach

Aguilar

Alaoui

et al. 2015

The Journal of Chemical Thermodynamics

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“…In this case, the calibration was performed with water, vacuum (in each range of pressure and temperature), and/or n -decane (in atmospheric pressure). It is pertinent to mention here that the calibration procedure has been described in our previous studies . In the present investigation, the expanded uncertainties, U , were calculated with the level of confidence 95% (with coverage factor k = 2) for temperature, pressure, and density.…”

Section: Calculationsmentioning

confidence: 99%

“…It is pertinent to mention here that the calibration procedure has been described in our previous studies. 18 In the present investigation, the expanded uncertainties, U, were calculated with the level of confidence 95% (with coverage factor k = 2) for temperature, pressure, and density. The expanded uncertainties in temperature and pressure were U(T) = 0.03 K between 298.15 and 393.15 K and U(p) = 0.04 MPa between 0.1 and 140 MPa, respectively.…”

Section: Calculationsmentioning

confidence: 99%

Effects of 2-Butanol Addition on Waste Cooking Oil Biodiesel Density: An Updated Experimental Measurement and Thermodynamic Modeling Study

et al. 2021

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Biodiesels will become the most popular alternative energy resource to fossil diesels; they can be used alone or blended with an oxygenated additive in any proportion. The properties of biodiesels strongly depend on the type of the fatty acid methyl esters (FAME) that compose them. The main objective of the present work is to investigate the influence of 2-butanol addition on the waste cooking oil biodiesel (WCOB), for this fact, the new experimental density data (952 points) of WCOB + 2-butanol binary mixtures over a wide range of composition [seven compositions; 0 ≤ (WCOB) mole fraction x ≤ 1] between 0.1 and 140 MPa and 298.15 and 393.15 K are presented. The experimental data were correlated using Tait and perturbed chain-statistical associating fluid theory (PC-SAFT) equations of state (EoS), to our knowledge, this is the first time that density measurements for the WCOB + 2-butanol mixture are correlated using the famous PC-SAFT EoS. The Tait equation predicts successfully the density with a global absolute average deviation (AAD) of 0.089%, while the PC-SAFT model correlates well the density with a very small global AAD of 0.223% in each composition. Furthermore, contrary to the Tait equation, the PC-SAFT model can explain some interactions between fluid molecules. From the experimental data, the excess volumes V E have been calculated and fitted using the Redlich–Kister equation with a very small global standard deviation of 7.49 × 10–5 cm3 mol–1, and V E show a positive and symmetric parabolic shape in all composition ranges. Finally, the isobaric thermal expansivity, α p , and the isothermal compressibility, κT, have been derived from the Tait equation and their observed trend was as expected.

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“…Density has been measured with a vibrating-tube densitometer Anton Paar, model DMA HPM, previously described in reference [13]. For the pressure, the measurements were performed from 0.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

High pressure and high temperature volumetric properties of (2-propanol + di-isopropyl ether) system

Dakkach

Muñoz-Rujas

Aguilar

et al. 2018

Fluid Phase Equilibria

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Liquid density of biofuel mixtures: 1-Heptanol+heptane system at pressures up to 140MPa and temperatures from 298.15K to 393.15K

Cited by 38 publications

References 77 publications

Liquid density of oxygenated additives to biofuels: 2-Butanol at pressures up to 140MPa and temperatures from (293.15 to 393.27)K

Liquid density of oxygenated additives to biofuels: 2-Butanol at pressures up to 140MPa and temperatures from (293.15 to 393.27)K

Effects of 2-Butanol Addition on Waste Cooking Oil Biodiesel Density: An Updated Experimental Measurement and Thermodynamic Modeling Study

High pressure and high temperature volumetric properties of (2-propanol + di-isopropyl ether) system

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