Photocatalyzed mineralization of kraft black liquor on ZnO/Fe2O3 coupled semiconductor.
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.
Villaseñor
J
J
Instituto de Química de Recursos Naturales, Universidad de Talca, Chile.
Duran
N
N
Mansilla
H D
HD
D002384:Catalysis; D005290:Ferric Compounds / Q000737:chemistry*; D006801:Humans; D008031:Lignin / Q000737:chemistry*; D010209:Paper; D012666:Semiconductors; D018505:Waste Management / Q000295:instrumentation* / Q000379:methods; D015034:Zinc Oxide / Q000737:chemistry*
D005290:Ferric Compounds; C000499:ferric oxide; C076151:Kraft lignin; D008031:Lignin; D015034:Zinc Oxide