DECOLOURISATION OF AZO DYES CONTAINING WASTEWATER BY Phanerochaete chrysosporium IN A ROTATING BIOLOGICAL CONTACTOR

作者：Demir G^*

来源：Journal of Environmental Protection and Ecology, 2010, 11(1): 7-19.

• textile wastewater
• azo dyes
• biodegradation
• Phanerochaete chrysosporium
• rotating biological contactor
• decolourisation

In this study, removal efficiencies of colour, COD, copper and aromatics in different concentrations of Remazol Yellow RR gran, Remazol Red RR gran and Remazol Blue RR gran were analysed using white rot fungus, namely Phanerochaete chrysosporium. Colour and COD removal efficiency values were compared with respect to EN ISO 7887 standards and Turkish water pollution and control legislation limit values. Colour measurements were made using values of the index of transparency parameter. Values of index of transparency = DFZ (DurchsichtsFarbZahl), in accordance with the EN ISO 7887 standards, were obtained by taking absorbance in 436, 525 and 620 nm. DFZ values were calculated from these measurements. The reactor hydraulic retention time was kept at 4 days (1 ml/min of continuous flow rate) and 2 days (2 ml/min of continuous flow rate) with a 10 mg l(-1) concentration of Remazol mixture and the disc rotating speeds were 10 and 15 rpms. The optimum reactor hydraulic retention time was determined to be 4 days. After the determination, experiments were carried out at the dye concentrations of 5, 10, 15, 20, 25 mg l(-1) and disc rotation speeds of 5, 10, 15 rpms. As a result, disc rotation speed and removable dye concentration were determined to be 10 rpm and 10 mg l(-1), according to the EN ISO 7887 standards for Remazol mixture and the specific type of reactor used.

• 出版日期2010