白腐真菌-纳米TiO_2联合处理染料的研究

Treatment of Dye by White Rot Fungi and Nano-Sized TiO_2 Combination

纳米TiO_2具有良好的光催化降解染料废水的活性,其降解效率高,无二次污染,因而有广阔的应用前景。但是处理染料后的纳米TiO_2难以回收,这给光催化剂的重复利用带来困难,粉末光催化剂的固定化是亟待解决的问题。本文通过白腐真菌小球与纳米TiO_2粉体形成联合体,研究了其对不同染料的处理效果。通过分析吸附过程中白腐真菌-纳米TiO_2联合体的表面电荷状态,包括p H值、zeta电位等,结合联合体的红外光谱特征,分析了真菌表面状态对联合体稳定性的影响。结果表明,真菌-二氧化钛联合体对染料具有较好的吸附和降解作用。

Nano-Sized TiO_2 contains good activities of photocatalytic degradation of dyes in waste water. It was applied with its effcial degradation,sunlight used and no pollution. But used nano-sized TiO_2 was hard to reclaim. In this paper, Nano-sized TiO_2 was combined with white rot fungi to study the treatment of dye. The results showed that, the combination had good absorption and degradation to dye. The surface charge of combination was analyzed, including p H, zeta during the absorption of dye. And also the influence of stability to combination was analyzed including IR.