Remediation of phenol, lignin and paper effluents by advanced oxidative processes.
The tremendous environmental impact of pulping and bleaching effluents and the relatively low efficiency of the current biological remediation processes represent one of the most important problems of the paper industry. In this work the efficiency of heterogeneous and homogeneous advanced oxidative processes was evaluated toward the degradation of model substrates (phenol and lignin) and the remediation of paper effluents. Best results were found by application of the UV-H2O2 system, with almost total discoloration of both pulping and bleaching effluents and typical COD removal higher than 60%, at reaction times of 120 min. In view of the reported results, and mainly on account of the simplicity of the UV-H2O2 system, shows good potential for the advanced process to remediation of recalcitrant effluents like those studied in this present work.
Peralta-Zamora
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P
Universidade Federal do Parana, Departamento de Química, PO Box 19081, 81531-990, Curitiba-PR, Brazil.
Wypych
F
F
Carneiro
L M
LM
Vaz
S R
SR
D004787:Environmental Pollution / Q000517:prevention & control; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007220:Industrial Waste; D007700:Kinetics; D008031:Lignin / Q000737:chemistry* / Q000528:radiation effects*; D010083:Oxidants, Photochemical; D010084:Oxidation-Reduction; D010209:Paper; D019800:Phenol / Q000737:chemistry* / Q000528:radiation effects*; D010777:Photochemistry; D014025:Titanium / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods; D015034:Zinc Oxide / Q000737:chemistry
D007220:Industrial Waste; D010083:Oxidants, Photochemical; C009495:titanium dioxide; D019800:Phenol; D008031:Lignin; D006861:Hydrogen Peroxide; D014025:Titanium; D015034:Zinc Oxide