WYKORZYSTANIE WYBRANYCH SZCZEPÓW Basidiomycota DO USUWANIA MIESZANIN BARWNIKÓW Z RÓŻNYCH KLAS

Synthetic dyes, due to their toxicity and low biodegradability, belong to hazardous and hardly removable contaminants. Even bigger problems are caused by their mixtures. The aim of the study was to analyze the effectiveness of removing of mixtures of dyes from various classes using selected strains of Basidiomycota (Pleurotus ostreatus - BWPH and K4, Polyporus picipes - RWP17). Two-component mixtures consisting of anthraquinone remazol brilliant blue R (RBBR), azo Congo red and triphenylmethane brilliant green (concentration range of mixtures 0.01-0.15 g/dm³) were tested. Removal of dyes was analyzed at the wavelengths corresponding to the highest absorbance. Surprisingly with increasing concentration of mixture 1 (CK+RBBR), increased removal of colour by BWPH and K4 strains was observed. This mixture was well removed by the RWP17 strain and decolourisation efficiency decreased with increasing concentration (from 95 to 75 %). Removal of mixture 2 (CK+ZB) was very high for Pleurotus strains - increase in the concentration caused a decrease in the efficiency of the process (from 100 to 0 %). The RWP17 strain removed this mixture with different degrees at different wavelengths. Studies have confirmed that the removal of dye mixtures is very chellenging, and the process efficiency depends on the mixture composition, concentration and the strain used.