Thiols' extraction from "jet-fuel" assisted by ionic liquids in hollow fibre membrane contactors

Ana R. Ferreira; Luísa Alexandra Graça Neves; Jorge C. Ribeiro; Fernando M. Lopes; Joao A. P. Coutinho; Isabel M. Coelhoso; Joao G. Crespo

doi:10.1016/j.memsci.2014.11.057

Thiols' extraction from "jet-fuel" assisted by ionic liquids in hollow fibre membrane contactors

Ana R. Ferreira, Luísa Alexandra Graça Neves, Jorge C. Ribeiro, Fernando M. Lopes, Joao A. P. Coutinho, Isabel M. Coelhoso, Joao G. Crespo

Research output: Contribution to journal › Article

7 Citations (Scopus)

Abstract

This work proposes an alternative technique for the selective extraction of thiols from a "jet-fuel" model stream, using the 1-ethyl-3-methylimidazolium triflate ([C(2)mim][CF3SO3]) ionic liquid as extractant, in a hollow fibre membrane contactor. Due to the low distribution ratio of the thiol towards the ionic liquid, observed in single extraction, a regeneration step (stripping with vacuum or a sweep gas) was added to the extraction process, in order to maximize the concentration gradient overcoming thermodynamic constraints. The stripping with a sweep gas allowed for a complete regeneration of the ionic liquid producing a jet-fuel with sulphur content lower than 2 ppm. Since the controlling step of the process is the extraction of thiol from the feed phase to the ionic liquid phase, the increase of the ionic liquid velocity and operating temperature may further enhance the process performance. The results obtained along with the ultra-low sulphur jet-fuel model produced prove the high potential of this integrated process as an alternative method for replacing the current expensive desulphurization process. (C) 2014 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	65-73
Number of pages	9
Journal	Journal of Membrane Science
Volume	477
DOIs	https://doi.org/10.1016/j.memsci.2014.11.057
Publication status	Published - 1 Mar 2015

Keywords

Desulphurization
Thiols removal
Jet-fuel
Ionic liquid extraction
Hollow fibre membrane contactor
CARBON-DIOXIDE
RACEMIC-RESOLUTION
BACK-EXTRACTION
SULFUR REMOVAL
DESULFURIZATION
PROPRANOLOL
ABSORPTION
RECOVERY
SOLVENT
TEMPERATURE

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10.1016/j.memsci.2014.11.057Licence: CC BY-NC-ND

Cite this

Ferreira, A. R., Neves, L. A. G., Ribeiro, J. C., Lopes, F. M., Coutinho, J. A. P., Coelhoso, I. M., & Crespo, J. G. (2015). Thiols' extraction from "jet-fuel" assisted by ionic liquids in hollow fibre membrane contactors. Journal of Membrane Science, 477, 65-73. https://doi.org/10.1016/j.memsci.2014.11.057

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title = "Thiols' extraction from {"}jet-fuel{"} assisted by ionic liquids in hollow fibre membrane contactors",

abstract = "This work proposes an alternative technique for the selective extraction of thiols from a {"}jet-fuel{"} model stream, using the 1-ethyl-3-methylimidazolium triflate ([C(2)mim][CF3SO3]) ionic liquid as extractant, in a hollow fibre membrane contactor. Due to the low distribution ratio of the thiol towards the ionic liquid, observed in single extraction, a regeneration step (stripping with vacuum or a sweep gas) was added to the extraction process, in order to maximize the concentration gradient overcoming thermodynamic constraints. The stripping with a sweep gas allowed for a complete regeneration of the ionic liquid producing a jet-fuel with sulphur content lower than 2 ppm. Since the controlling step of the process is the extraction of thiol from the feed phase to the ionic liquid phase, the increase of the ionic liquid velocity and operating temperature may further enhance the process performance. The results obtained along with the ultra-low sulphur jet-fuel model produced prove the high potential of this integrated process as an alternative method for replacing the current expensive desulphurization process. (C) 2014 Elsevier B.V. All rights reserved.",

keywords = "Desulphurization, Thiols removal, Jet-fuel, Ionic liquid extraction, Hollow fibre membrane contactor, CARBON-DIOXIDE, RACEMIC-RESOLUTION, BACK-EXTRACTION, SULFUR REMOVAL, DESULFURIZATION, PROPRANOLOL, ABSORPTION, RECOVERY, SOLVENT, TEMPERATURE",

author = "Ferreira, {Ana R.} and Neves, {Lu{\'i}sa Alexandra Gra{\cc}a} and Ribeiro, {Jorge C.} and Lopes, {Fernando M.} and Coutinho, {Joao A. P.} and Coelhoso, {Isabel M.} and Crespo, {Joao G.}",

note = "Sem PDF. This work was financed by national funding from Fundacao para a Ciencia e a Tecnologia (FCT) through Projects Pest-C/EQB/LA0006/2011, PTDC/QUI-QUI/121520/2010 and Pest-C/CTM/LA0011/2013. Ana R. Ferreira acknowledges the financial support from FCT and Galp Energia through the PhD scholarship SFRH/BDE/33835/2009. Luisa Neves acknowledges the financial support from FCT through the scholarship SFRH/BPD/64975/2009.",

year = "2015",

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doi = "10.1016/j.memsci.2014.11.057",

language = "English",

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T1 - Thiols' extraction from "jet-fuel" assisted by ionic liquids in hollow fibre membrane contactors

AU - Ferreira, Ana R.

AU - Neves, Luísa Alexandra Graça

AU - Ribeiro, Jorge C.

AU - Lopes, Fernando M.

AU - Coutinho, Joao A. P.

AU - Coelhoso, Isabel M.

AU - Crespo, Joao G.

N1 - Sem PDF. This work was financed by national funding from Fundacao para a Ciencia e a Tecnologia (FCT) through Projects Pest-C/EQB/LA0006/2011, PTDC/QUI-QUI/121520/2010 and Pest-C/CTM/LA0011/2013. Ana R. Ferreira acknowledges the financial support from FCT and Galp Energia through the PhD scholarship SFRH/BDE/33835/2009. Luisa Neves acknowledges the financial support from FCT through the scholarship SFRH/BPD/64975/2009.

PY - 2015/3/1

Y1 - 2015/3/1

N2 - This work proposes an alternative technique for the selective extraction of thiols from a "jet-fuel" model stream, using the 1-ethyl-3-methylimidazolium triflate ([C(2)mim][CF3SO3]) ionic liquid as extractant, in a hollow fibre membrane contactor. Due to the low distribution ratio of the thiol towards the ionic liquid, observed in single extraction, a regeneration step (stripping with vacuum or a sweep gas) was added to the extraction process, in order to maximize the concentration gradient overcoming thermodynamic constraints. The stripping with a sweep gas allowed for a complete regeneration of the ionic liquid producing a jet-fuel with sulphur content lower than 2 ppm. Since the controlling step of the process is the extraction of thiol from the feed phase to the ionic liquid phase, the increase of the ionic liquid velocity and operating temperature may further enhance the process performance. The results obtained along with the ultra-low sulphur jet-fuel model produced prove the high potential of this integrated process as an alternative method for replacing the current expensive desulphurization process. (C) 2014 Elsevier B.V. All rights reserved.

AB - This work proposes an alternative technique for the selective extraction of thiols from a "jet-fuel" model stream, using the 1-ethyl-3-methylimidazolium triflate ([C(2)mim][CF3SO3]) ionic liquid as extractant, in a hollow fibre membrane contactor. Due to the low distribution ratio of the thiol towards the ionic liquid, observed in single extraction, a regeneration step (stripping with vacuum or a sweep gas) was added to the extraction process, in order to maximize the concentration gradient overcoming thermodynamic constraints. The stripping with a sweep gas allowed for a complete regeneration of the ionic liquid producing a jet-fuel with sulphur content lower than 2 ppm. Since the controlling step of the process is the extraction of thiol from the feed phase to the ionic liquid phase, the increase of the ionic liquid velocity and operating temperature may further enhance the process performance. The results obtained along with the ultra-low sulphur jet-fuel model produced prove the high potential of this integrated process as an alternative method for replacing the current expensive desulphurization process. (C) 2014 Elsevier B.V. All rights reserved.

KW - Desulphurization

KW - Thiols removal

KW - Jet-fuel

KW - Ionic liquid extraction

KW - Hollow fibre membrane contactor

KW - CARBON-DIOXIDE

KW - RACEMIC-RESOLUTION

KW - BACK-EXTRACTION

KW - SULFUR REMOVAL

KW - DESULFURIZATION

KW - PROPRANOLOL

KW - ABSORPTION

KW - RECOVERY

KW - SOLVENT

KW - TEMPERATURE

U2 - 10.1016/j.memsci.2014.11.057

DO - 10.1016/j.memsci.2014.11.057

M3 - Article

VL - 477

SP - 65

EP - 73

JO - Journal of Membrane Science

JF - Journal of Membrane Science

SN - 0376-7388

ER -