Effects of inorganic electrolytes on zeta potentials of ceramic MF membranes

摘要

The characterization of surface electrical properties of membrane materials is critical for understanding and predicting filtration performance.In this study,the electrical properties of an alumina-based ceramic microfiltration (MF) membrane were studied.The zeta potential of the membrane itself was determined using electro-osmosis measurements in the presence of various electrolytes,including NaCl,NH_4C1,CaCl_2,FeCl_2,A1C1_3,Na_2SO_4,Na_2S,Na_3PO_4,FeSO_4 and A1_2(SO_4)_3,which are commonly encountered in the inorganic salt industry.