Monday, August 12, 2013
Pavilion (Sheraton San Diego)
Investigations on biodegradation of textile effluent by filamentous fungi strains Curvularia lunata URM 6179 and Phanerochaete chrysosporium URM 6181 were performed in static bioreactors under aerated and non-aerated conditions. Spectrophotometric, HPLC/UV and LC-MS/MS analysis were performed as for to confirm, respectively, decolourisation, biodegradation and identity of compounds in the effluent. Enzymatic assays revealed higher production of enzymes laccase (LAC), lignin peroxidase (Li-P) and manganese-dependent peroxidase (Mn-P) by P. chrysosporium URM 6181 in aerated bioreactor. Both strains decolourised completely the effluent after ten days and biodegradation of the most predominant indigo dye was superior in aerated bioreactor. Effluent treated by P. chrysosporium URM 6181 accumulated a new compound derived from previous indigo with high mutagenic potential. C. lunata URM 6179, showed to be more successful for assure the environmental quality of treated effluent. These systems were found very effective for efficient fungal treatment of textile effluent.