| Registro completo |
| Provedor de dados: |
BABT
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| País: |
Brazil
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| Título: |
Azo Dye Mineralization by Phanerochaete Chysosporium in a Sequencing Bath Reactor
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| Autores: |
Wanderley,Carlos Ronald Pessoa
Andrade,Marcus Vinícius
Pereira,Luciana José
Silva,Gloria Maria Marinho
Pessoa,Kelly Rodrigues
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| Data: |
2018-01-01
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| Ano: |
2018
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| Palavras-chave: |
Biodegradation
Congo red
Phanerochaete chrysosporium
Sequential bioreactors
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| Resumo: |
ABSTRACT The mineralization of the azo dye congo red by the fungi Phanerochaete chrysosporium was studied in two sequential batch bioreactors (R1 and R2), operated in cycles of 48 h (step I) and 24 h (step II). In step I, glucose concentration was 1 g.L-1 in both reactors and in step II, 1 g.L-1 of glucose was maintained in R1, but R2 received no addition of glucose. In step I, the average dye removal efficiencies were 76 ± 29 % (R1) and 53 ± 15% (R2), while in step II the averages recorded for dye removal for R1 and R2 were 84 ± 15 and 70 ± 28%, respectively. The rates of dye removal were 0.04 h-1 in R1 and 0.03 h-1 in R2 in step I. Higher rates were obtained in step II, 0,07 h-1 and 0,02 h-1 for R1 and R2, respectively. The highest dye removal occurred in R1 and, in R2, the residual dye was further removed. Laccase was the oxidised at higher amount, in step I was 54 μmol.min-1 for R1 and 38 μmolmin-1 for R2. The proposed treatment system was very effective in removing the azo dye, however the mineralization may not be complete and some by-products may have been formed, according to spectrofotometric analysis, were the peak corresponding to benzene, 220 nm, persisted.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100606
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| Editor: |
Instituto de Tecnologia do Paraná - Tecpar
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| Relação: |
10.1590/1678-4324-2018180195
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| Formato: |
text/html
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| Fonte: |
Brazilian Archives of Biology and Technology v.61 2018
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| Direitos: |
info:eu-repo/semantics/openAccess
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