Abstrato

A Comparative Study on the Accumulation of Acid Red 18 and Reactive Black 5 Dyes by Growing Schizophyllum Commune and Trametes Versicolor

Renganathan Sahadevan, Velan Manikam , Lima Rose Miranda and Gautam Pennathur

The accumulation of acid red 18 and reactive black 5 by growing Schizophyllum commune and Trametes versicolor was studied with respect to the initial pH varying from 1 to 6 and initial dye concentration (10 to 100 mg/litre) at 25oC. The initial pH of the dye solution strongly affected the growth of the fungus and the accumulation of dyes. The effective pH was observed as 2 for both; growth and color removal of these azo dyes. Increasing the concentration of azo dyes inhibited the growth of S. commune. It was observed that both fungi were capable of removing acid red 18 and reactive black 5 with a maximum specific uptake capacity of 82.1 and 179.1 (mg/g) for S. commune and 76.1 and 178.3 (mg/g) for T. versicolor, respectively for an initial dye concentration of 100 mg/litre. Maximum percentage color removal was observed at lower concentrations of both the dyes. Finally, it was observed that the percentage color removal was found to be more in reactive black 5 dye when compared to the acid red 18 dye studied in the present investigation.