Thiols' extraction from "jet-fuel" assisted by ionic liquids in hollow fibre membrane contactors
authors Ferreira, AR; Neves, LA; Ribeiro, JC; Lopes, FM; Coutinho, JAP; Coelhoso, IM; Crespo, JG
nationality International
journal JOURNAL OF MEMBRANE SCIENCE
author keywords Desulphurization; Thiols removal; Jet-fuel; Ionic liquid extraction; Hollow fibre membrane contactor
keywords CARBON-DIOXIDE; RACEMIC-RESOLUTION; BACK-EXTRACTION; SULFUR REMOVAL; DESULFURIZATION; PROPRANOLOL; ABSORPTION; RECOVERY; SOLVENT; TEMPERATURE
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.
publisher ELSEVIER SCIENCE BV
issn 0376-7388
year published 2015
volume 477
beginning page 65
ending page 73
digital object identifier (doi) 10.1016/j.memsci.2014.11.057
web of science category Engineering, Chemical; Polymer Science
subject category Engineering; Polymer Science
unique article identifier WOS:000349383100008
  ciceco authors
  impact metrics
journal analysis (jcr 2017):
journal impact factor 6.578
5 year journal impact factor 6.656
category normalized journal impact factor percentile 95.461
dimensions (citation analysis):
altmetrics (social interaction):



 


Apoio

1suponsers_list_ciceco.jpg