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Combined photocatalytic and fungal processes for the treatment of nitrocellulose industry wastewater
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...
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Published in: | Journal of hazardous materials 2009-01, Vol.161 (2), p.1569-1573 |
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creator | Barreto-Rodrigues, Marcio Souza, João V.B. Silva, Érica S. Silva, Flávio T. Paiva, Teresa C.B. |
description | 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. |
doi_str_mv | 10.1016/j.jhazmat.2008.05.012 |
format | article |
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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
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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.</description><subject>Applied sciences</subject><subject>Biodegradation, Environmental</subject><subject>Bioreactors</subject><subject>Carbon - chemistry</subject><subject>Catalysis</subject><subject>Catalytic reactions</subject><subject>Chemical engineering</subject><subject>Chemistry</subject><subject>Collodion - chemistry</subject><subject>Combined processes</subject><subject>Delignification effluent</subject><subject>Exact sciences and technology</subject><subject>Fungi - physiology</subject><subject>Fungus treatment</subject><subject>General and physical chemistry</subject><subject>General purification processes</subject><subject>Industrial Waste</subject><subject>Industry - methods</subject><subject>Phenol - chemistry</subject><subject>Phenols</subject><subject>Photochemistry - methods</subject><subject>Pollution</subject><subject>Reactors</subject><subject>Spectrophotometry, Ultraviolet - methods</subject><subject>Theory of reactions, general kinetics. Catalysis. 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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
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subjects | Applied sciences Biodegradation, Environmental Bioreactors Carbon - chemistry Catalysis Catalytic reactions Chemical engineering Chemistry Collodion - chemistry Combined processes Delignification effluent Exact sciences and technology Fungi - physiology Fungus treatment General and physical chemistry General purification processes Industrial Waste Industry - methods Phenol - chemistry Phenols Photochemistry - methods Pollution Reactors Spectrophotometry, Ultraviolet - methods Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Waste Disposal, Fluid - methods Wastewaters Water Pollutants, Chemical Water Purification - methods Water treatment and pollution |
title | Combined photocatalytic and fungal processes for the treatment of nitrocellulose industry wastewater |
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