摘要
采用"溶胶-凝胶"相转化法制备了聚醚砜(PES)通孔膜微囊载体,该PES微囊载体呈球形囊状,外径约2mm,壁面密布指状通孔孔道,孔径分布窄,中值孔径13.6μm,载体内外表面粗糙,并具有较大的孔容、孔表面积和空隙率,空隙率高达91.7%。在厌氧处理人工废水的静态实验中,使用通孔膜微囊载体的沼气产量高于使用基体型多孔聚合物载体和未使用载体的情况:在31d内,使用载体的累积沼气产量达到881ml,使用基体型多孔聚合物载体和未使用载体的仅分别为715ml和517ml;厌氧菌群大量存在于载体内部和断面通孔内。结果表明所制备的通孔膜微囊具有良好的微生物固定化载体性能。
Polyethersulfone porous capsule carriers were prepared with a gel-sol phase inversion method. The mean diameter of the capsule carriers was about 2 mm, and the capsule membranes were full of straight finger pores. The pore size distribution was narrow and the median pore diameter was 13.6 μm. The outer and inner surfaces of the capsule carriers were rough. The capsule carriers had large total pore volume, total pore area and porosity (as large as 91.7%). In the anaerobic wastewater biotreatment process, the biogas production rate with the porous capsule carriers was higher than that with matrix-type porous polymeric carriers, and that without any carriers was the lowest. In a period of 31 days, the cumulative biogas volume produced in the wastewater biodegradation process with the porous capsule carriers was 881 ml, and those with matrix-type porous polymeric carriers and without any carriers were 715 ml and 517 ml, respectively. Immobilized anaerobic microbial cells were also found both inside the membrane pores and in the inner spaces of capsule carriers. The porous capsule carriers were proven to be efficient for the microbial immobilization under both aerobic and anaerobic conditions.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2005年第3期47-51,共5页
Journal of Sichuan University (Engineering Science Edition)
基金
教育部优秀青年教师资助计划(2072)
教育部跨世纪优秀人才基金
国家高技术研究发展计划("十五"863计划)(202AA601210)资助项目
关键词
聚醚砜
载体
微生物固定化
微囊
多孔膜
相转化
Polyethersulfone
carriers
microbial immobilization
capsules
porous membranes
phase inversion
