Preparation and characterization of a novel diatomite-based composite and investigation of its adsorption properties for uranyl ions


Senol Z. M. , Arslan D. S. , Şimşek S.

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, vol.321, no.3, pp.791-803, 2019 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Review
  • Volume: 321 Issue: 3
  • Publication Date: 2019
  • Doi Number: 10.1007/s10967-019-06662-y
  • Title of Journal : JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • Page Numbers: pp.791-803
  • Keywords: Diatomite, Uranyl, Composite, Polyacrylamide, Adsorption, AQUEOUS-SOLUTION, HEAVY-METALS, THERMODYNAMIC PARAMETERS, WASTE-WATER, REMOVAL, U(VI), RECOVERY, URANIUM, ADSORBENTS, CELLULOSE

Abstract

In this research, Polyacrylamide-diatomite (PAA-D) composite was used as adsorbent for the efficient removal of uranyl ions from aqueous solution. The chemical and morphological properties of PAA-D composite were confirmed by several analysis. Batch experiments were performed as a function of solution pH, initial concentration, kinetic, thermodynamic and recovery. The maximum metal uptake capacity was found as 0.085 mol kg(-1). Kinetic data were best interpreted by a pseudo second order model. Thermodynamic findings showed that the adsorption process was exothermic, spontaneous and process with increased disorderliness at solid/solution interface. The recovery studies showed that PAA-D composite had good adsorption/desorption performance.