eprintid: 4132
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/41/32
datestamp: 2023-11-09 16:15:47
lastmod: 2023-11-09 16:15:47
status_changed: 2023-11-09 15:57:44
type: article
metadata_visibility: show
creators_name: Hassan, S.
creators_name: Duclaux, L.
creators_name: Lévêque, J.-M.
creators_name: Reinert, L.
creators_name: Farooq, A.
creators_name: Yasin, T.
title: Effect of cation type, alkyl chain length, adsorbate size on adsorption kinetics and isotherms of bromide ionic liquids from aqueous solutions onto microporous fabric and granulated activated carbons
ispublished: pub
keywords: Activated carbon; Adsorbates; Chain length; Hydrophobicity; Ionic liquids; Microporosity; Positive ions; Surface chemistry, Adsorption kinetics and isotherm; Alkyl chain lengths; Cation type; Granulated activated carbons; Imidazolium; Long chains; Microporous; N 2 adsorption; Pyrrolidinium; Thermodynamic parameter, Adsorption, activated carbon; alkyl group; bromine derivative; cation; ionic liquid; octanol; water; bromide; cation; charcoal; heterocyclic compound; ionic liquid; solvent; water pollutant, activated carbon; adsorption; aqueous solution; bromide; cation; desorption; equilibrium; isotherm; numerical model; porosity; reaction kinetics; thermodynamics, adsorption; adsorption kinetics; algorithm; aqueous solution; article; conductance; controlled study; desorption; diffusion; enthalpy; entropy; hydrophobicity; isotherm; microtechnology; particle size; pH; porosity; solubility; chemistry; kinetics; temperature; thermodynamics; water pollutant, Adsorption; Bromides; Cations; Charcoal; Heterocyclic Compounds; Ionic Liquids; Kinetics; Solvents; Temperature; Thermodynamics; Water Pollutants, Chemical
note: cited By 31
abstract: The adsorption from aqueous solution of imidazolium, pyrrolidinium and pyridinium based bromide ionic liquids (ILs) having different alkyl chain lengths was investigated on two types of microporous activated carbons: a fabric and a granulated one, well characterized in terms of surface chemistry by "Boehm" titrations and pH of point of zero charge measurements and of porosity by N2 adsorption at 77K and CO2 adsorption at 273K. The influence of cation type, alkyl chain length and adsorbate size on the adsorption properties was analyzed by studying kinetics and isotherms of eight different ILs using conductivity measurements. Equilibrium studies were carried out at different temperatures in the range 25-55°C. The incorporation of ILs on the AC porosity was studied by N2 adsorption-desorption measurements at 77K. The experimental adsorption isotherms data showed a good correlation with the Langmuir model. Thermodynamic studies indicated that the adsorption of ILs onto activated carbons was an exothermic process, and that the removal efficiency increased with increase in alkyl chain length, due to the increase in hydrophobicity of long chain ILs cations determined with the evolution of the calculated octanol-water constant (Kow). The negative values of free energies indicated that adsorption of ILs with long chain lengths having hydrophobic cations was more spontaneous at the investigated temperatures. © 2014 Elsevier Ltd.
date: 2014
publisher: Academic Press
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902330528&doi=10.1016%2fj.jenvman.2014.05.005&partnerID=40&md5=3cc6e6933c2019779e357d6c547e5884
id_number: 10.1016/j.jenvman.2014.05.005
full_text_status: none
publication: Journal of Environmental Management
volume: 144
pagerange: 108-117
refereed: TRUE
issn: 03014797
citation:   Hassan, S. and Duclaux, L. and Lévêque, J.-M. and Reinert, L. and Farooq, A. and Yasin, T.  (2014) Effect of cation type, alkyl chain length, adsorbate size on adsorption kinetics and isotherms of bromide ionic liquids from aqueous solutions onto microporous fabric and granulated activated carbons.  Journal of Environmental Management, 144.  pp. 108-117.  ISSN 03014797