CHEMICALLY MODIFIED CLAYS USED FOR ENVIRONMENTAL QUALITY

  • NICOLETA PLATON
    ”Vasile Alecsandri” University of Bacau, Faculty of Engineering, Department of Chemical and Food Engineering, 157 Calea Marasesti, 600115 Bacau, Romania
  • ANA-MARIA ROŞU
    ”Vasile Alecsandri” University of Bacau, Faculty of Engineering, Department of Chemical and Food Engineering, 157 Calea Marasesti, 600115 Bacau, Romania
  • VASILICA ALISA ARUŞ
    ”Vasile Alecsandri” University of Bacau, Faculty of Engineering, Department of Chemical and Food Engineering, 157 Calea Marasesti, 600115 Bacau, Romania
  • DENISA ILEANA NISTOR
    ”Vasile Alecsandri” University of Bacau, Faculty of Engineering, Department of Chemical and Food Engineering, 157 Calea Marasesti, 600115 Bacau, Romania
  • ILIE SIMINICEANU
    ”Gheorghe Asachi” Technical University of Iaşi, Department of Chemical Engineering, 73 Mangeron Blv., 700050 Iasi, Romania

Abstract

In this work, catalysts were synthesized based on chemically modified clays through pillaring process with Al (III) and Fe (III) using commercial bentonite and acid-treated montomorillonite like KSF montmorillonite and K10 montmorillonite from Aldrich, as raw materials. The raw materials and chemically modified clays were characterized by: BET (Brunauer-Emmet-Teller) method and XRD (X-ray diffraction). Afterwards these catalysts were tested during wet oxidation with peroxides using phenol as target compound. Experimental results show that chemically modified clays with Fe(III) presented a higher catalytic activity in Fenton like processes than Al-Fe clays.

Cuvinte cheie

catalytic oxidation montmorillonit phenol pillared clay