PMID- 33962283 OWN - NLM STAT- MEDLINE DCOM- 20210527 LR - 20210527 IS - 1095-8630 (Electronic) IS - 0301-4797 (Linking) VI - 291 DP - 2021 Aug 1 TI - Immobilisation of phosphonium-based ionic liquid in polysulfone capsules for the removal of phenolic compounds, with an emphasis on 2,4-dichlorophenol, in aqueous solution. PG - 112670 LID - S0301-4797(21)00732-5 [pii] LID - 10.1016/j.jenvman.2021.112670 [doi] AB - Phosphonium-based ionic liquid immobilised in polysulfone capsules were prepared by the phase inversion technique for the adsorption of different phenolic compounds from aqueous solution. Some techniques, including Scanning Electron Microscopy (SEM), surface analysis by Brunauer-Emmett-Teller (BET), Fourier Transform Infrared Spectroscopy (FT-IR) and Thermogravimetric Analysis (TGA), were used to characterize the capsule and indicated that trihexyltetradecylphosphonium decanoate (ionic liquid) was successfully immobilised in polysulfone, the immobilisation was determined to be 63.29%. Adsorption tests showed that the developed capsules have the potential to remove varied phenolic compounds. For compounds 2,4-dichlorophenol (2,4-DCP) the best removal was achieved between pH 3.0 and 9.0. Temperature variation (25-70 degrees C) and sodium chloride concentration (0-1000 mg⋅L(-1)) had no significant changes in adsorption, demonstrating the scope for using this adsorbent with real effluents. Adsorption kinetics demonstrated the mechanism occurs in second order, the Weber-Morris model delimited the intraparticle diffusion as the adsorption limiter. The Redlich-Peterson model was the isothermal analysis that best suited the experimental data, with a beta value equal to 0.821 approaching the Langmuir model, which obtained a q(max) of 404.50 mg⋅g(-1). Consequently, these results demonstrate that these capsules have potential application in the treatment of environmental pollution caused by phenolic compounds. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Machado, Diego Bittencourt AU - Machado DB AD - Federal University of Santa Catarina, Department of Chemical and Food Engineering, Campus Universitario Trindade, 87504-200, Florianopolis, Santa Catarina, Brazil. Electronic address: diegobmach@gmail.com. FAU - Skoronski, Everton AU - Skoronski E AD - Santa Catarina State University, Department of Environmental and Sanitary Engineering, 2090 Luis de Camoes Avenue, 88520-000, Lages, Santa Catarina, Brazil. FAU - Soares, Cintia AU - Soares C AD - Federal University of Santa Catarina, Department of Chemical and Food Engineering, Campus Universitario Trindade, 87504-200, Florianopolis, Santa Catarina, Brazil. Electronic address: cintia.soares@ufsc.br. FAU - Padoin, Natan AU - Padoin N AD - Federal University of Santa Catarina, Department of Chemical and Food Engineering, Campus Universitario Trindade, 87504-200, Florianopolis, Santa Catarina, Brazil. LA - eng PT - Journal Article DEP - 20210505 PL - England TA - J Environ Manage JT - Journal of environmental management JID - 0401664 RN - 0 (Capsules) RN - 0 (Chlorophenols) RN - 0 (Ionic Liquids) RN - 0 (Polymers) RN - 0 (Sulfones) RN - 0 (Water Pollutants, Chemical) RN - 25135-51-7 (polysulfone P 1700) RN - R669TG1950 (2,4-dichlorophenol) SB - IM MH - Adsorption MH - Capsules MH - Chlorophenols MH - Hydrogen-Ion Concentration MH - *Ionic Liquids MH - Kinetics MH - Polymers MH - Spectroscopy, Fourier Transform Infrared MH - Sulfones MH - *Water Pollutants, Chemical/analysis OTO - NOTNLM OT - 2,4-Dichlorophenol removal OT - Ionic liquid OT - Polysulfone capsule EDAT- 2021/05/08 06:00 MHDA- 2021/05/28 06:00 CRDT- 2021/05/07 20:33 PHST- 2020/11/25 00:00 [received] PHST- 2021/04/13 00:00 [revised] PHST- 2021/04/15 00:00 [accepted] PHST- 2021/05/08 06:00 [pubmed] PHST- 2021/05/28 06:00 [medline] PHST- 2021/05/07 20:33 [entrez] AID - S0301-4797(21)00732-5 [pii] AID - 10.1016/j.jenvman.2021.112670 [doi] PST - ppublish SO - J Environ Manage. 2021 Aug 1;291:112670. doi: 10.1016/j.jenvman.2021.112670. Epub 2021 May 5.