草酸青霉生长菌体对络铜活性染料吸附的研究

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

用草酸青霉生长菌体吸附模拟废水中络铜活性染料.结果表明,生长菌体对5种活性染料具有良好的吸附性能.用孢子悬液接种模拟染料废水(5%,体积分数),当起始染料浓度为200mg/L时,5种染料的平均去除率达93.3%;起始染料浓度为400mg/L时,活性翠蓝KN-G和活性翠蓝M-GB去除率分别达99.7%和99.9%.生长菌体对染料的吸附涉及细胞壁的吸附和细胞内的积累,染料分子由细胞外向细胞内的转移导致细胞内染料的积累;菌体细胞壁的结构变化及其显著增厚,既为染料在细胞壁上的吸附提供了空间,也为染料分子由细胞壁向细胞内的转移提供了通道.

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 call 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.