| 초록 |
Ceramic membrane technology has been extensively utilized in water/wastewater treatment and in pretreatment during the nanofiltration / reverse osmosis process. However, the typical ceramic membranes, consisting of alumina (Al2O3), are usually susceptible to membrane fouling during water purification process. It is mostly attributed to the positively charged surface properties, which resulted from relatively high isoelectric point (IEP) of 9.4. For improving the fouling resistance of alumina membranes, we endeavored to control the surface properties using two different methods: organic and inorganic surface modifications. Thus, the respective surface modifications could successfully produce the negatively charged membranes. These surface-modified membranes would prevent the serious foulant adsorption via electrostatic repulsion and enhance the fouling resistance of alumina membranes. |
