Redução de poluentes de efluentes das indústrias de papel e celulose pela floculação/coagulação e degradação fotoquímica

Química Nova

Marcos José De Barros¹  Jorge Nozaki¹ 

[1] ,Universidade Estadual de Maringá Departamento de Química Maringá PR

关键词: flocculation;    effluents;    lignin;   

DOI  :  10.1590/S0100-40422002000500006

来源: SciELO

【 摘 要 】

The abatement of recalcitrant lignin macromolecules from effluents of pulp and paper industry was investigated by combined process. Flocculation and coagulation with aluminum sulfate and natural polyelectrolytes extracted from cactus Cereus peruvianus were used in the first step. After separation of solid residues by filtration, the photochemical methods using TiO2 as catalyst were employed for photocatalytic degradation of lignin compounds from solution. The abatement of lignin compounds after flocculation and coagulation was 46%, and after the overall process, the pollutants reduction observed were 66%. The remaining organic compounds may be removed by any biological treatment.

【 授权许可】

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