학술논문
Organobeidellites for Removal of Anti-Inflammatory Drugs from Aqueous Solutions.
Document Type
Academic Journal
Author
Plevová E; Institute of Geonics of the Czech Academy Sciences, Studentská 1768, 708 00 Ostrava, Czech Republic.; Vallová S; Department of Chemistry, VSB-Technical University of Ostrava, 17. listopadu 15, 700 30 Ostrava, Czech Republic.; Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15, 700 30 Ostrava, Czech Republic.; Vaculíková L; Institute of Geonics of the Czech Academy Sciences, Studentská 1768, 708 00 Ostrava, Czech Republic.; Hundáková M; Nanotechnology Centre, CEET, VSB-Technical University of Ostrava, 17. listopadu 15, 700 30 Ostrava, Czech Republic.; Gabor R; Nanotechnology Centre, CEET, VSB-Technical University of Ostrava, 17. listopadu 15, 700 30 Ostrava, Czech Republic.; Smutná K; Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15, 700 30 Ostrava, Czech Republic.; Žebrák R; Dekonta Inc., Dřetovice 109, 273 42 Stehelčeves, Czech Republic.
Source
Publisher: MDPI AG Country of Publication: Switzerland NLM ID: 101610216 Publication Model: Electronic Cited Medium: Print ISSN: 2079-4991 (Print) Linking ISSN: 20794991 NLM ISO Abbreviation: Nanomaterials (Basel) Subsets: PubMed not MEDLINE
Subject
Language
English
ISSN
2079-4991
Abstract
Diclofenac (DC) and ibuprofen (IBU) are widely prescribed non-steroidal anti-inflammatory drugs, the consumption of which has rapidly increased in recent years. The biodegradability of pharmaceuticals is negligible and their removal efficiency by wastewater treatment is very low. Therefore, the beidelitte (BEI) as unique nanomaterial was modified by the following different surfactants: cetylpyridinium (CP), benzalkonium (BA) and tetradecyltrimethylammonium (TD) bromides. Organobeidellites were tested as potential nanosorbents for analgesics. The organobeidellites were characterized using X-ray powder diffraction (XRD), Infrared spectroscopy (IR), Thermogravimetry and differential thermal analysis (TG/DTA) and scanning microscopy (SEM). The equilibrium concentrations of analgesics in solution were determined using UV-VIS spectroscopy. The intercalation of surfactants into BEI structure was confirmed both using XRD analysis due to an increase in basal spacing from 1.53 to 2.01 nm for BEI_BA and IR by decreasing in the intensities of bands related to the adsorbed water. SEM proved successful in the uploading of surfactants by a rougher and eroded organobeidellite surface. TG/DTA evaluated the decrease in dehydration/dehydroxylation temperatures due to higher hydrophobicity. The Sorption experiments demonstrated a sufficient sorption ability for IBU (55-86%) and an excellent ability for DC (over 90%). The maximum adsorption capacity was found for BEI_BA-DC (49.02 mg·g -1 ). The adsorption according to surfactant type follows the order BEI_BA > BEI_TD > BEI_CP.