Semi-interpenetrating network based on xanthan gum-cl-2-(N-morpholinoethyl methacrylate)/titanium oxide for the single and binary removal of cationic dyes from water


TAKTAK F. F., Özyaranlar E.

International Journal of Biological Macromolecules, vol.221, pp.238-255, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 221
  • Publication Date: 2022
  • Doi Number: 10.1016/j.ijbiomac.2022.08.139
  • Journal Name: International Journal of Biological Macromolecules
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, EMBASE, Food Science & Technology Abstracts, INSPEC, MEDLINE, Veterinary Science Database
  • Page Numbers: pp.238-255
  • Keywords: Binary system, Hydrogel, Synergic adsorption, Titanium dioxide, Xanthan gum
  • Uşak University Affiliated: Yes

Abstract

In the present study, semi-interpenetrating polymer networks (semi-IPNs) were synthesized based on xanthan gum (XG)-cl-2-(N-morpholinoethyl methacrylate) (MEMA)/titanium dioxide (TiO2) in the presence of N, N` methylene bisacrylamide (MBAAm), as the cross-linking agent. After that, the semi-IPN hydrogel was used to adsorb Methylene Blue (MB+) and Crystal Violet (CV+) from single and two-component adsorption systems. The optimal pH for efficient dye adsorption in aqueous solutions has been determined to be 8 for CV+ and 11 for MB+, respectively. The presence of polar oxygen-containing functional groups such as OH, C[dbnd]O, C-O-C, COOH, and others has been noticed to be the primary driving force in dye adsorption. Equilibrium data from a single process fitted very well to the Freundlich and Dubinin–Radushkevich models (R2 = 0.997 and 0.99) for MB+ and CV+, respectively. In a binary system, CV+ removed more than MB+, and both dyes demonstrated synergism during the adsorption of CV+/MB+ solutions. The dye removal efficiency of the adsorbent was found to be quite good even after the fourth adsorption-desorption cycle. In the treatment of multi-component contaminated water, XG-cl-poly (MEMA)/TiO2 might be a beneficial and reusable adsorbent.