Volcanic soils of southern Chile have demonstrated a great capacity to adsorb environmental pollutants.

For industrial applications in wastewater treatment facilities, a stable ceramic material was produced. The proposed process is based on the generation of a volcanic soil-polyurethane foam made with recycled PET-polyols.

The selected foam formula with 35.4 % volcanic soil (< 63µm) seems to be the most suitable for thermal treatment, with temperature steps at 700 °C, 850 °C, 1000 °C and 1200 °C. Possible, suggested uses of this ceramic material could be its introduction in advanced or tertiary wastewater treatment facilities in pulp and paper mills and leather tanneries, as well as in sanitary landfill leachate depuration processes. Another possible application could be as filling materials in reactive walls ("funnel & gate systems) for cleaning up groundwater.

Copyright: © Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben
Quelle: DepoTech 2004 (November 2004)
Seiten: 4
Preis inkl. MwSt.: € 2,00
Autor: Dr. Rodrigo Navia
Em.o.Univ.-Prof. Dr.-Ing. Karl E. Lorber
K. H. Schmidt
G. Behrendt

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