Combined photocatalytic and fungal processes for the treatment of nitrocellulose industry wastewater |
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Authors: | Barreto-Rodrigues Marcio Souza João V B Silva Erica S Silva Flávio T Paiva Teresa C B |
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Affiliation: | Federal Technological University of Paraná, Via do Conhecimento, km 01, Pato Branco, PR, Brazil. marciorodrigues@utfpr.edu.br |
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Abstract: | The objective of this work was to characterize the delignification effluent originating from the delignification industry and evaluate the combination of the fungus and photocatalytic process (TiO(2)/UV system) for the treatment of this effluent. The delignification effluent has proven harmful to the environment because it presents high color (3516 CU), total phenol (876 mg/L) and TOC (1599 mg/L) and is also highly toxic even in a low concentration. The results of photocatalysis were 11%, 25% and 13% higher for reductions in color, total phenol and TOC, respectively. The combined treatments presented benefits when compared to the non-combined treatments. Fungus and photocatalysis in combination proved to be the best treatment, reducing the color, total phenol, toxicity (inhibition of Escherichia coli growth) and TOC by 94.2%, 92.6%, 4.9% and 62%, respectively. |
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