青霉菌丝体分子印迹吸附膜对Cr(Ⅲ)的吸附性能

Adsorption of Cr(Ⅲ) by a membrane molecularly imprinted with Penicillium mycelium

以发酵工业废弃菌丝体为主要吸附介质,通过分子印迹技术,制备得到青霉菌丝体分子印迹吸附膜。研究了青霉菌丝体分子印迹吸附膜对Cr3+的吸附特性、影响因素以及吸附膜的稳定性。结果表明:静态饱和吸附容量可达65mg/g,最佳吸附pH为6,吸附过程符合Langmuir等温吸附方程;动态吸附实验穿透时间在400min左右,对皮革废水中的Cr3+的动态吸附容量为27mg/g;该吸附膜稳定性较好,可以多次重复使用、静态使用批次已达60批次。

Based on molecular imprinting technology,a new molecular imprinted adsorption membrane has been prepared using waste mycelium from industrial fermentation as the main component. The adsorption characteristics and the factors influencing the performance and stability of the membrane were studied. The results showed that the maximum static adsorption capacity for Cr（Ⅲ） was about 65 mg/g when the optimum pH of 6 was chosen. The breakthrough time reached 400 min and the dynamic adsorption capacity was about 27 mg/g. The adsorption process could be fitted to the Langmuir isotherm model. This novel adsorption membrane shows good stability and can be reused up to 60 times without losing its uptake ability.