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Photocatalyzed mineralization of kraft black liquor on ZnO/Fe2O3 coupled semiconductor
J Villaseñor1, N Duran, H D Mansilla
1Instituto de Química de Recursos Naturales, Universidad de Talca, Chile.
Abstract:
Photocatalysis using ZnO-Fe2O3 coupled catalyst removed partially the organic matter dissolved in kraft black liquor obtained from pinus wood cooking. The photo-assisted oxidation using different ZnO/Fe2O3 ratios was studied following the CO, evolution during the course of the reaction. A synergy of the composite improves the mineralization observed. The optimal ZnO to Fe2O3 ratio varied from 0.5 to 0.7 which allowed the highest mineralization rates.
