Supported Ionic Liquids for the Efficient Removal of Acetylsalicylic Acid from Aqueous Solutions
authors Bernardo, SC; Araujo, BR; Sousa, ACA; Barros, RA; Cristovao, AC; Neves, MC; Freire, MG
nationality International
journal EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
author keywords Acetylsalicylic acid; Functionalized Silica; Supported Ionic Liquids; Adsorption; Kinetics; Isotherms
keywords PERSONAL CARE PRODUCTS; PHARMACEUTICALLY ACTIVE COMPOUNDS; SOLID-PHASE EXTRACTION; WASTE-WATER TREATMENT; ENDOCRINE DISRUPTORS; STATIONARY-PHASE; DRUG RESIDUES; ADSORPTION; PERFORMANCE; CYCLOPHOSPHAMIDE
abstract Acetylsalicylic acid, commercially available as aspirin, is one of the most used drugs in the world, being detected in several environmental compartments, including drinking water supplies. Given its environmental impact, the development of a cost-effective technology capable of removing this pharmaceutical from water samples is of high relevance, for which materials based on silica chemically modified with ionic liquids (SILs) can be foreseen as a promising alternative. In this work, four SILs (with the chloride anion and imidazolium or tetraalkylammonium cations of different alkyl side chain length) were synthesized and characterized, and their potential for the adsorption of acetylsalicylic acid appraised by adsorption kinetics and isotherms. Envisioning their use to treat drinking water, the toxicity of all SILs towards the liver cell line Hep2G was determined. The best identified SIL, comprising the dimethylbutylammonium cation, displays a maximum adsorption capacity of 0.08 mmol/g, being 1 g of this material sufficient to treat ca. 14,500 L of water containing 1 mu g/L of acetylsalicylic acid (under ideal conditions). Furthermore, this material has a negligible toxicity towards the liver cell line Hep2G. The results obtained reinforce the potential of SILs as alternative adsorbents to effectively remove acetylsalicylic acid from aqueous solutions, and may be envisioned as a promising strategy for the treatment of wastewater and drinking water.
publisher WILEY-V C H VERLAG GMBH
issn 1434-1948
year published 2020
volume 2020
issue 24
beginning page 2380
ending page 2389
digital object identifier (doi) 10.1002/ejic.202000101
web of science category Chemistry, Inorganic & Nuclear
subject category Chemistry
unique article identifier WOS:000540338000001
  ciceco authors
  impact metrics
journal analysis (jcr 2019):
journal impact factor 2.529
5 year journal impact factor 2.284
category normalized journal impact factor percentile 65.556
dimensions (citation analysis):
altmetrics (social interaction):



 


Apoio

1suponsers_list_ciceco.jpg