Studies on Penicillium Oxalicum growing mycelium sorption to complex-Cu reactive dyes

Using Penicillium oxalicum growing mycelium sorption to complex-Cu reactive dyes in simulated dye wastewater was investigated. The growing mycelium possessed good sorption property on 5 kinds of reactive dyes. Using spore suspension inoculating simulated dye wastewater (5%, V/V), when the initial dye concentration was 200 mg/L, the average removal efficiency of 5 kinds of dyes reached 93.3%; when the initial dye concentration was 400 mg/L, the removal efficiencies of Reactive Turquoise Blue KN-G and Reactive Turquoise Blue M-GB reached 99.7% and 99.9% respectively. The sorption of growing mycelium on dyes involved the sorption of cell walls and the accumulation in the interior of cells. The transfer of dye molecule from outside to inside of cell led to the dye accumulation. The structure change of mycelium cell wall and its thickening supplied the space for dye sorption on cell wall and also supplied the passage for transferring of dye molecule from cell wall to the interiors of the cells.