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Removal of caffeine from industrial wastewater using Trichosporon asahii.
J Environ Biol ; 2013 July; 34(4): 701-708
Artigo em Inglês | IMSEAR | ID: sea-148585
ABSTRACT
Caffeine (1, 3, 7-trimethylxanthine), a natural alkaloid present mainly in tea and coffee products has been suggested as an environmental pollutant. Decaffeination is an important process for the removal of caffeine from coffee industrial wastes. In the present study, caffeine removal (through degradation) by yeast isolate, Trichosporon asahii immobilized on various conventional matrices (sodium alginate, carboxymethyl cellulose, chitosan, agar and agarose) was investigated using the method of entrapment. The biofilm forming ability of T. asahii was monitored by atomic force microscopy and scanning electron microscopy. Exopolysaccharide produced by T. asahii biofilm was characterized by FT-IR spectroscopy and HPLC analysis. Caffeine removal from coffee processing industrial effluent was found to be 75 and 80 % by alginate immobilized yeast and yeast biofilm formed on gravels over a period of 48 hr in batch mode. Effectiveness of the process was also tested involving the continuous - flow column studies.

Texto completo: DisponíveL Índice: IMSEAR (Sudeste Asiático) Idioma: Inglês Revista: J Environ Biol Ano de publicação: 2013 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: IMSEAR (Sudeste Asiático) Idioma: Inglês Revista: J Environ Biol Ano de publicação: 2013 Tipo de documento: Artigo