CAJ | 학술논문

通过对 PAA-g-ZrO2复合膜过滤牛血清蛋白过程的污染阻力及其分布分析揭示接枝聚丙烯酸(PAA)对 ZrO2膜抗污染性能的影响规律。结果表明：PAA-g-ZrO2复合膜和 ZrO2膜的总阻力均随着过滤时间的延长而增加，但是 PAA-g-ZrO2复合膜总阻力的增加趋势明显低于原 ZrO2膜，同时，PAA-g-ZrO2复合膜的内部污染阻力 Rif所占比例下降为原ZrO2膜的一半，这表明PAA接枝到ZrO2膜表面明显降低了膜孔内堵塞的内部污染，提高了膜的抗污染和易清洗性能。此外，溶液的pH值对PAA-g-ZrO2复合膜的污染阻力及其分布有着明显影响，当溶液pH值为8.0时，PAA-g-ZrO2复合膜几乎不存在膜孔堵塞污染。
통과대 PAA-g-ZrO2복합막과려우혈청단백과정적오염조력급기분포분석게시접지취병희산(PAA)대 ZrO2막항오염성능적영향규률。결과표명：PAA-g-ZrO2복합막화 ZrO2막적총조력균수착과려시간적연장이증가，단시 PAA-g-ZrO2복합막총조력적증가추세명현저우원 ZrO2막，동시，PAA-g-ZrO2복합막적내부오염조력 Rif소점비례하강위원ZrO2막적일반，저표명PAA접지도ZrO2막표면명현강저료막공내도새적내부오염，제고료막적항오염화역청세성능。차외，용액적pH치대PAA-g-ZrO2복합막적오염조력급기분포유착명현영향，당용액pH치위8.0시，PAA-g-ZrO2복합막궤호불존재막공도새오염。
Fouling of PAA-g-ZrO2 composite membrane by BSA solution was investigated in conjunction with analysis of membrane total resistances and resistances distribution. The total resistances of the PAA-g-ZrO2 composite membrane and ZrO2 membrane increased with increasing filtration time, but the growth trend of the PAA-g-ZrO2 composite membrane total resistances was lower than that of the ZrO2 membrane. The fouling resistance of the ZrO2 membrane was Rcp (concentration polarization resistance)-dominant, while Rcp and Rm (membrane resistance) controlled the PAA-g-ZrO2 composite membrane separation process. The internal plugging resistance (Rif) of the PAA-g-ZrO2 composite membrane was just half of that of the ZrO2 membrane. The membrane resistance of PAA-g-ZrO2 composite membrane increased with increasing pH. The densely packed brush-shaped structure of the PAA chains was considered to be responsible for reducing the protein adsorption on the membrane surface. Furthermore, the PAA-g-ZrO2 composite membrane displayed high pH-sensitivity for BSA solutions, and could resist protein fouling in high pH applications.