Remoção do corante FD&C azul nº 2 Indigotina em água com uso de fungos de decomposição branca e processo de filtração lenta: avaliação em escala piloto
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Data
2008-08-04
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Universidade Federal de Goiás
Resumo
Industrial activities are constantly producing wastes such as dyes which are usually
found in the industrial effluents and constitutes a environmental problem due its toxicity
and inadequate disposal. The use of fungi, in particular the white-rot fungus, have been
found to be efficient for biodegrading these compounds. In addition, slow sand filtration
have been reported to be the most efficient unit filtration processes to improve the
physical, biological and chemical quality of potable water. The objective of this work
was to investigate the removal efficiency of the dye FD&C azul Nº 2 Indigotina, by the
use of the Trametes versicolor fungus combined with slow sand filtration. Two
laboratory-scale filter columns of 0.08 m diameter and 0.90 m sand media depth were
used to investigate the process performance. One slow sand filter, FLA, was applied in
combination with the Trametes versicolor fungus, while the FLB was used as control.
Three methodologies for the fungi growth were used. The results showed that the slow
sand filtration is a prominent process for the removal of the dye FD&C azul nº 2
Indigotina when used in combination with the Trametes versicolor fungus. A maximum
removal of 95% was found when the filter was inoculated with fungi grown on Petri
dish. The average dye removal when the increased fungi biomass was inoculated to the
filter was 70%. This result suggests that the filter performance increased when the
fungus was inoculated with fungi grown on Petri dish. In addition, head loss was found
to be higher in the FLA filter than in the FLA (control), indicating that the fungi
biomass contributes to the head loss development.
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LOPES, Maria Margareth Gonçalves. Remove the dye FD & C Blue No. 2 indigo in water use
fungal decay and white slow filtration process:
evaluation in pilot scale. 2008. 113 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Goiás, Goiânia, 2008.