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The adsorption of salicylic acid, acetylsalicylic acid and atenolol from aqueous solutions onto natural zeolites and clays: Clinoptilolite, bentonite and kaolin
- Source :
- Microporous and Mesoporous Materials, Microporous and Mesoporous Materials, Elsevier, 2013, 166, pp.185-194. ⟨10.1016/j.micromeso.2012.04.049⟩
- Publication Year :
- 2013
- Publisher :
- Elsevier BV, 2013.
-
Abstract
- EAU:ENERGIE+VRA:AAU; In this study, adsorption of salicylic acid, acetylsalicylic acid and atenolol from aqueous solutions onto clinoptilolite modified with sorbed metallic cations (Cu(II), Zn(II), Ni(II) or Mn(II)) have been probed. Natural clays (kaolin and bentonite, pure or ion-exchanged by octadecyl dimethyl benzyl ammonium chloride) have been also probed as adsorbents. The adsorption was studied at 30 degrees C by titration microcalorimetry, employed to obtain the heats evolved as a result of adsorption. Adsorption experiments were performed under the same conditions, the equilibrium adsorbate concentrations were determined by fluorescence spectrophotometry. The maximal adsorption capacities of investigated solids against target pharmaceuticals lie in the range of 10(-5)-10(-6) mol/g. Modified minerals have shown different capacities in comparison with natural ones. The adsorption capacities are dependent on the characteristics of pharmaceutically active compound. The results obtained in this work show that natural materials can be used effectively in the removal of investigated pharmaceuticals by adsorption. (C) 2012 Elsevier Inc. All rights reserved.
- Subjects :
- Isothermal microcalorimetry
Inorganic chemistry
02 engineering and technology
010501 environmental sciences
01 natural sciences
Metal
chemistry.chemical_compound
Adsorption
General Materials Science
Kaolin
0105 earth and related environmental sciences
Pharmaceutically active compounds
Clinoptilolite
Aqueous solution
Chemistry
[CHIM.CATA]Chemical Sciences/Catalysis
General Chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
[SDE.ES]Environmental Sciences/Environmental and Society
Mechanics of Materials
visual_art
Bentonite
visual_art.visual_art_medium
Ammonium chloride
Titration
0210 nano-technology
Subjects
Details
- ISSN :
- 13871811
- Volume :
- 166
- Database :
- OpenAIRE
- Journal :
- Microporous and Mesoporous Materials
- Accession number :
- edsair.doi.dedup.....dfb33d89ef704710202c5bd912b44038