RESUMO
In this study, the removal of color, chemical oxygen demand (COD) and aromatic group from one of the azo dyes, Remazol Yellow RR Gran, had been carried out by using one of the white rot fungi, Phanerochaete chrysosporium. Experimental studies were performed in growth media containing different amounts of dye and glucose. Color measurements were done at 436nm wavelength using spectrophotometer while aromatic group measurements were done at 280 nm wavelength using UV/Visible spectrophotometer. As a result of this study the values of the removable color concentration were determined as 10 mgl(-1) and lower. The optimum medium glucose concentration was determined to be 2 gl(-1) during color removal processes, aromatic group measurements were done in samples in the UV region at 280 nm wavelength. As a result of the measurements, it was shown that certain amount of aromatic group remained in the model wastewater at the end of the process.
Assuntos
Compostos Azo/metabolismo , Cor , Phanerochaete/metabolismo , Espectrofotometria UltravioletaRESUMO
In this study, biological degradation of non-polar monoaromatic compounds, benzene and toluene, by one of the white rot fungi, namely Trametes versicolor was analyzed and the biomass formed was determined. The studies were carried out in mediums which contain basic nutrients in certain amounts, toluene and benzene at concentrations of 50, 100, 200, 250 and 350 mg/l, pH at 5, temperature at 28 degrees C and rpm at 150. Within an incubation period of 48 hours, it was observed that, removal was completed in 4 hours when toluene concentration was 50 mg/l and was completed in 36 hours when concentration was 300 mg/l. Biodegradation was completed at the end of 4th hour at benzene concentration of 50 mg/l while it continued for 42 hours at the concentration of 300 mg/l. With the addition of veratryl alcohol (3,4-Dimethoxybenzyl alcohol) to the basic feed medium, the operation of the enzyme system gained speed and biodegradation completed in a shorter time period.