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The liquid wastes generated when biological stains are prepared, contain a mixture of chemical compounds and microorganisms, with high environmental impact. For this reason, Pleurotus ostreatus, Trametes versicolor, Enterobacter xianfangensis, Pseudomonas azotoformans, Pseudomonas sp., Bacillus subtilis and Pseudomonas fluorescens , were used to evaluate the treatment of a liquid waste containing triphenylmethane and azo dyes, on a laboratory scale. Initially, the strains with less antagonistic effect among them were selected for their potential to produce enzymes as Laccase, Manganese Peroxidase and Lignin Peroxidase. The enzymatic activity was determined by using inducing substrates and dye mixtures. For fungal/bacterial consortium, the decrease in color, Chemical Oxygen Demand and in Biochemical Oxygen demand was of 99 %, 70 % and 65 % at 96 h, respectively. The removal of these parameters was related to the positive interaction between the populations of fungi, bacteria and the production of ligninolytic enzymes, obtaining values of 7.0 and 14.0 logarithmic units for fungi and total bacteria at 96 h with enzymatic activities of 75 U/L, 205 U/L and 0.63 U/L for Laccase, MnP and LiP.

Evaluación del consorcio entre Pleurotus ostreatus, Trametes versicolor y bacterias aeróbicas para remoción de colorantes sintéticos