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采用浸渍-烧结工艺制备纳米Y_2O_3涂层的荷正电微孔陶瓷膜,通过FT-IR、SEM、ζ电位等分析了膜的组成结构,并对负电染料达旦黄进行吸附性能实验,考察了荷电膜对达旦黄吸附效果的影响因素。结果表明,荷电膜的平均孔径为0.6μm,表面均匀分布着纳米Y_2O_3粒子,膜等电点在p H=8.3左右;对质量浓度为10 mg/L的达旦黄溶液,在pH为3~8时,荷电膜能够有效吸附达旦黄,去除率均达到90%以上。通过正负电荷之间的静电吸附作用,荷正电微孔陶瓷膜对达旦黄有良好的吸附去除性能,预示着荷电膜在工业染色废水处理中具有很好的应用前景。
The nano-Y_2O_3 coating was prepared by impregnation-sintering process. The structure of the membrane was analyzed by FT-IR, SEM and zeta potential. The adsorption performance of the dyestuff was studied. Influencing Factors of Electrodialysis on Adsorption of Dadan Yellow. The results showed that the average pore diameter of charged membrane was 0.6μm, the surface of Y_2O_3 nanoparticles was uniformly distributed, and the isoelectric point of membrane was about p H = 8.3. For the solution of daidan yellow with mass concentration of 10 mg / L, At 8 o’clock, the charged membrane can adsorb daidan yellow effectively, and the removal rates reach more than 90%. Through the electrostatic adsorption between the positive and negative charges, the positive charge microporous ceramic membrane has a good adsorption and removal performance to the yellow, which indicates that the charged membrane has good application prospect in the industrial dyeing and wastewater treatment.