Decolorization of anthraquinone dye by Aspergillus ficuum in various physiological states.
J Environ Biol
;
2003 Apr; 24(2): 181-6
Artigo
em Inglês
| IMSEAR
| ID: sea-113484
ABSTRACT
Decolorization of reactive brilliant blue KN-R by Aspergillus ficuum was investigated on suspended spores, mycelial pellets, immobilized cells. It was found that Aspergillus ficuum could effectively decolorize reactive brilliant blue KN-R especially when grown as pelleted mycelia. Many factors affecting the decolorization process in nitrogen-limited media (NLM) were studied, including initial pH, temperature, and mycelial age. Results showed that the media containing reactive brilliant blue KN-R at 50 mg/L could be decolorized by 96% of the initial color in 42 h, in most conditions tested, the dye degraded products assayed by UV-visible spectrophotometer and macroscopic observation showed that the decolorization of reactive brilliant blue KN-R by mycelial pellets includes two important processes biodegradation and biosorption. Kinetic study revealed that reactive brilliant KN-R biodegradation by mycelial pellets and suspended spores conformed to first-order reaction model while reactive brilliant blue KN-R biodegradation by immobilized cell followed zero-order model. In addition, mycelial pellets was found to biodegrade KN-R more quickly than suspended spores and immobilized cell.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Aspergillus
/
Temperatura
/
Indústria Têxtil
/
Benzenossulfonatos
/
Biodegradação Ambiental
/
Cinética
/
Purificação da Água
/
Corantes
/
Concentração de Íons de Hidrogênio
/
Resíduos Industriais
Tipo de estudo:
Estudo prognóstico
Idioma:
Inglês
Revista:
J Environ Biol
Ano de publicação:
2003
Tipo de documento:
Artigo
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