Journal
ARABIAN JOURNAL OF CHEMISTRY
Volume 13, Issue 1, Pages 258-270Publisher
ELSEVIER
DOI: 10.1016/j.arabjc.2017.04.006
Keywords
Adsorption; Kinetics; Isotherms; Activated carbon cloth; Ibuprofen; Ionic liquid
Categories
Funding
- Region Rhone-Alpes (France)
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Ionic liquids (ILs) are considered as emergent pollutants as their synthesis and further use at a large scale might generate environmental problems. The adsorption on activated carbons represents one of the most effective methods to remove ionic liquids and other micropollutants from wastewater. In this work, the adsorption properties on an activated carbon cloth of two pyridinium ionic liquids (4-tert-butyl-1-propylpyridinium bromide (IL1) and 4-tert-butyl-1-(2-carboxyethyl)pyr idinium bromide (IL2)) newly synthesized, were compared with the ones of ibuprofen. The adsorption kinetics and isotherms were studied at pH 3 and 7.5. The adsorption thermodynamic parameters calculated from the isotherms indicate an exothermic process, typical of physisorption. The adsorption kinetics of a mixture of the molecules show a competition between ibuprofen and IL2. The location of each adsorbed ionic liquid and ibuprofen into the porosity of the activated carbon cloth was determined from N-2 (at 77 K) and CO2 adsorption isotherms (at 273 K). The purification process of an effluent containing the ionic liquids and the ibuprofen in mixture or in single solute could be workable by adsorption on an activated cloth. (C) 2017 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University.
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