Title: VERMICULITE-BASED CATALYTS FOR OXIDATION OF ORGANIC POLLUTANTS IN WATER AND WASTEWATER |
Authors: Wegrzyn Agnieszka, Chmielarz Lucjan, Zjezdzalka Pawel, Jablonska Magdalena, Kowalczyk Andrzej, Zelazny Agata, Sulleiro Manuel Vázquez and Michalik Marek |
DOI: 10.13168/AGG.2013.0033 |
Journal: Acta Geodynamica et Geomaterialia, Vol. 10, No. 3 (171), Prague 2013 |
Full Text: PDF file (0.8 MB) |
Keywords: vermiculite, wastewater, advanced oxidation processes, phenol |
Abstract: In presented work natural expanded vermiculite was used as a starting material for synthesis of Fe-doped catalysts. Material
was modified with increasing amount of Fe by ion-exchange and precipitation of iron oxide. Composite materials were
characterized with respect to their structure (X-ray diffraction, Infrared spectra using Diffuse Reflectance), agglomeration
state of Fe (Ultraviolet-Visible spectra using Diffuse Reflectance) and chemical composition. Activity in H2O2 decomposition
as well as in phenol oxidation was studied in liquid phase at atmospheric pressure and temperature up to 70 °C. It was shown
that doping with Fe increases catalytic activity. However, excess of iron resulted in formation of undesired side-products. |