Kinetics of pure propane and <i>n</i>‐butane desorption from soybean oil

Novello, Zuleica; Tres, Marcus V.; Racoski, Jéssica C.; Luccio, Marco Di; Oliveira, J. Vladimir

doi:10.1002/cjce.21883

Cited by 4 publications

(2 citation statements)

References 20 publications

(26 reference statements)

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“…This study is part of two studies of new technologies for extraction of essential and vegetable oils based on pressurized and liquified gases (Oliveira et al, 2012;Novello et al, 2013;Tres et al, 2009b), and the use of the membrane separation process for recovery of solvents used in such extraction processes (Oliveira et al, 2011;Tres et al, 2009aTres et al, , 2010Tres et al, , 2012aTres et al, and 2012b. The final purpose of these works is the application of this technology to aid solvent recovery in oil extraction plants.…”

Section: Introductionmentioning

confidence: 99%

Solvent recovery from soybean oil/n-butane mixtures using a hollow fiber ultrafiltration membrane

Tres

Racoski

Nóbrega³

et al. 2014

Braz. J. Chem. Eng.

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-The aim of this work was the study on the separation of soybean oil/n-butane mixtures using a commercial hollow fiber ultrafiltration membrane (50 kDa). Oil/n-butane mixtures with mass ratios of 1:1 and 1:3 (wt), with the feed pressures of 5, 7 and 10 bar and transmembrane pressure of 1 bar were studied. Rejections of oil between 21 to 97.2%, oil fluxes between 0.04 and 0.98 kg/m 2 h and n-butane fluxes between 4 and 46 kg/m 2 h were observed, strongly influenced by the feed concentration. The increase in oil/n-butane mass ratio caused an increase in oil rejection and a decrease in the permeate flux of oil for most assays. The increase in the operating pressure caused an increase in oil flux and a consequent decrease in oil rejection. No degradation was observed in the membrane module during the operation with this non-aqueous feed stream, as confirmed by integrity tests.

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Section: Introductionmentioning

confidence: 99%

Solvent recovery from soybean oil/n-butane mixtures using a hollow fiber ultrafiltration membrane

Tres

Racoski

Nóbrega³

et al. 2014

Braz. J. Chem. Eng.

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“…In this context, the objective of this study was to develop a process for separation of soybean oil and pressurized gases, as liquefied n‐butane and liquefied petroleum gas, using nano‐ and ultrafiltration flat sheet membranes. This study is part of a broader research about new technologies for extraction of essential and vegetable oils based on pressurized and liquefied gases, and the use of the membrane separation process for recovery of solvents used in such extraction processes . The final goal is the application of such technology to aid solvent recovery in the oil extraction plants.…”

Section: Introductionmentioning

confidence: 99%

Separation of soybean oil from liquefied n‐butane and liquefied petroleum gas by membrane separation process

et al. 2014

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This work investigates the separation of soybean oil/compressed n‐butane and soybean oil/liquefied petroleum gas (LPG) mixtures, using ultra‐ and nanofiltration membranes. For this purpose, soybean oil/n‐butane and soybean oil/LPG in the mass ratio of 1:3 were continuously fed into a flat sheet module without the recycle. The effects of the feed pressure (10, 20, and 30 bar), the pressure difference (1, 5, and 10 bar) and the pre‐treatment with ethanol and n‐propanol on the oil permeate flux and oil retention were investigated. The membranes with best performance (higher oil retention combined with high solvent permeate flux) were Sepa GM (4 kDa) and Sepa HL (98 % MgSO4), previously conditioned in ethanol. The Sepa GM membrane showed oil retention between 95 to 99 %. The Sepa HL membrane showed oil retention between 83 to 97 %. The pre‐treatment with ethanol improved the permeate flux. In most of the experimental conditions severe membrane fouling was observed. A change in the permeate flux and oil retention behaviour was observed in the assays with LPG as solvent due to the different gas composition when compared with n‐butane.

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Desolventizing of soybean oil/azeotrope mixtures using ceramic membranes

Melo

Tiggeman²,

Rezzadori³

et al. 2016

Environmental Technology

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This work investigates the use of ceramic membranes with different molecular weight cut-offs (MWCOs: 5, 10 and 20 kDa) to desolventize azeotropic solvent mixtures (ethanol/n-hexane and isopropyl alcohol/n-hexane) from soybean oil/azeotrope micelles. Results show that a decrease in the MWCO of a membrane and an increase in the solvent mass ratio in the mixture resulted in a significant reduction in the permeate flux. The 20 kDa membrane presented the highest permeate flux, 80 and 60 kg/mh for the soybean oil/n-hexane/isopropyl alcohol and soybean oil/n-hexane/ethanol azeotropes, respectively, for an oil to solvent ratio of 1:3 (w/w). The highest oil retention was found using the n-hexane/isopropyl alcohol azeotrope, around 25% in the membrane with the lowest MWCO, that is, 5 kDa. It is shown that the azeotropic mixtures provided intermediate characteristics compared to the original pure solvent behavior.

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Kinetics of pure propane and n‐butane desorption from soybean oil

Cited by 4 publications

References 20 publications

Solvent recovery from soybean oil/n-butane mixtures using a hollow fiber ultrafiltration membrane

Solvent recovery from soybean oil/n-butane mixtures using a hollow fiber ultrafiltration membrane

Separation of soybean oil from liquefied n‐butane and liquefied petroleum gas by membrane separation process

Desolventizing of soybean oil/azeotrope mixtures using ceramic membranes

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