Liquid–liquid equilibrium of binary and ternary systems composed by palm oil or palm oil fractions with methanol/ethanol and water

Huang, Xin; Bi, Jingtao; Wang, Jingkang; Ouyang, Jinbo; Xiao, Yan; Hao, Hongxun; Bao, Ying; Wang, Yongli; Yin, Qiuxiang

doi:10.1016/j.fluid.2015.06.028

Cited by 21 publications

(14 citation statements)

References 35 publications

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“…27 Both these observations could point to an inherent inhomogeneity in water distribution in oil polymer networks. In support of this notion of water inhomogeneity, there are many studies of the spinodal decomposition of solutions of triglycerides and water in acetone, ethanol and other solvents [28][29][30] into one phase rich in water and solvent, and a second rich in oil and low in water. In triglyceride polymer networks like those in oil paints, the restricted movement of polymer segments would mean that such a phase separation process, if it still exists, could only occur on the micro-or even nanoscale.…”

Section: Effects Of Water On Zinc Soap Crystallizationmentioning

confidence: 99%

Traces of water catalyze zinc soap crystallization in solvent-exposed oil paints

Hermans

Helwig²,

Woutersen

et al. 2023

Phys. Chem. Chem. Phys.

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Section: Effects Of Water On Zinc Soap Crystallizationmentioning

confidence: 99%

Traces of water catalyze zinc soap crystallization in solvent-exposed oil paints

Hermans

Helwig²,

Woutersen

et al. 2023

Phys. Chem. Chem. Phys.

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“…Tačiau superkrizinės sąlygos reikalauja didelių energetinių sąnaudų: aukšto slėgio (20-43 MPa) ir temperatūros (350-400 °C) (Van Kasteren et al, 2007; Shiro, Isayama, 2009; Tat et al, 2011; García-Martínez et al, 2017; Lamba et al, 2017). Biodyzelino gamybos procese, naudojant mažos molekulinės masės karboksirūgščių esterius, nesusidaro įprastinės biodyzelino gamybos šalutinis produktas -glicerolis (Casas et al, 2011;Huang et al, 2015;Alavianmehr et al, 2017), o gauti jo dariniai (glicerolio ir mažos masės karboksirūgščių esteriai) gerai tirpsta biodyzeline. Gautas mišinys pasižymi geresnėmis žematemperatūrinėmis savybėmis nei grynas biodyzelinas ir gali būti naudojamas kaip degalai dyzeliniuose varikliuose.…”

Section: įVadasunclassified

Biocatalytic transesterification of rapeseed oil by methyl formate

Makarevičienė¹,

Sendžikaitė²

2019

zemesukiomokslai

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Due to the awareness of adverse effects of conventional fuels on environment and on a frequent rise in the crude oil price, the need for a sustainable and environment-friendly alternate source of energy has gained importance. Recently, options have been analysed to replace the triglyceride transesterification process, which is generally used in biodiesel production, by the process where raw glycerol is not generated, whereas triacylglycerides obtained instead glycerol can be directly used as fuel for a diesel engine in a mixture with fatty acid esters. In the present work, interesterification of rapeseed oil to biodiesel was carried out with methyl formate and using lipase as a catalyst. The research was carried out at the Laboratory of Chemical and Biochemical Research for Environmental Technology of Aleksandras Stulginskis University. First, the most effective biocatalyst suitable for the process was selected. 14 different lipases were studied. The samples obtained after the synthesis were analysed by the thin-layer and gas chromatography. Process experiments were performed using a methyl formate to oil molar ratio of 6:1 to 40:1, a lipase amount of 5 to 17% (mass of oil) and synthesis duration of 3 to 48 h. The highest yield of fatty acid methyl esters (FAME) was obtained using Lipozyme RM IM as a catalyst and its optimal amount was 13%. The optimal temperature was found to be 20°C and the duration of interesterification 42 h. The optimal molar ratio of methyl formate to oil was determined to be 32:1. Under the obtained conditions the transesterification degree was 60.68 ± 0.95%.

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“…In view of the increasing consumption of fossil fuels as a source of energy, the resulting environmental pollution, and the limited availability of these fuels, the search for alternative energies has become more intense. , Among renewable energy sources, biofuels such as biodiesels are the most promising for immediate replacement of oil derivatives, as they offer a more sustainable option. , In effect, biodiesel is a biodegradable and non-toxic fuel which presents a favorable combustion profile and relatively clean-burning. ,− This fuel consists of a mixture of fatty acid alkyl esters (FAAEs) generally produced by a homogeneous transesterification reaction between triglycerides (vegetable oil or animal fat) and a short-chain alcohol (mainly methanol or ethanol) in the presence of alkali catalysts. ,, …”

Section: Introductionmentioning

confidence: 99%

Liquid–Liquid Equilibria of Glycerol + Alcohol + Safflower Biodiesel Systems: Measurement and Modeling

et al. 2023

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Liquid–liquid equilibrium (LLE) for the biodiesel + glycerol + alcohol system is essential for the design, operation, process optimization, and economic evaluation of a biodiesel production plant. In this work, methyl and ethyl safflower biodiesels were produced from safflower (Carthamus tinctorius L.) seed oil. New LLE experimental datasets were obtained for the glycerol (1) + methanol/ethanol (2) + methyl/ethyl safflower biodiesel (3) systems at 298.15 and 318.15 K under atmospheric pressure. Binodal curves, tie-lines, distribution coefficients, and selectivity were determined. Data reliability was confirmed using the Othmer–Tobias correlation. LLE data were correlated with the UNIQUAC model satisfactorily, with deviations between 0.70 and 2.79% for all studied systems. The consistency of the estimated binary interaction parameters of the UNIQUAC model was ascertained. Finally, through process simulations in Aspen Hysys software, it was verified that the UNIFAC LLE model, along with the UNIQUAC model, can also be used adequately to describe the liquid–liquid behavior of biodiesel separators, provided that the biodiesel composition is accurately known.

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Liquid–liquid equilibrium of binary and ternary systems composed by palm oil or palm oil fractions with methanol/ethanol and water

Cited by 21 publications

References 35 publications

Traces of water catalyze zinc soap crystallization in solvent-exposed oil paints

Traces of water catalyze zinc soap crystallization in solvent-exposed oil paints

Biocatalytic transesterification of rapeseed oil by methyl formate

Liquid–Liquid Equilibria of Glycerol + Alcohol + Safflower Biodiesel Systems: Measurement and Modeling

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