固定化厌氧微生物多孔囊状聚酰胺载体的研制

Preparation of Polyamide Porous Capsule Carriers for Anaerobic Microorganism Immobilization

采用界面聚合方法制备出固定化厌氧微生物多孔囊状聚酰胺载体。该载体壁薄,内外表面粗糙多孔,具有典型的囊状空间、较高的孔体积和比表面积。将该载体用于厌氧法处理人工合成废水,同一时间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时的沼气产量,在3种情况下的3 6 d累积沼气产量分别为1 4 3 0,1 2 1 0,8 7 5 mL。使用电子扫描电镜观察固定化微生物载体,发现有大量的厌氧菌群生长在载体内外表面。实验结果表明,该载体固定厌氧微生物的性能良好。

A kind of porous polyamide carriers to immobilize anaerobic microorganisms was prepared by interfacial polymerization method. The carrier is capsule shape - featured and has thin porous membrane. Its outer and inner surfaces are rough and have large total pore volume and total pore surface area. In the anaerobic treatment of synthetic wastewater, the biogas production rate with the prepared carriers was higher than that with matrix -type porous polymeric carriers and that without any carriers. In a period of 36 days, the cumulative biogas volumes under these three conditions are 1 430 mL, 1 210 mL and 875 mL respectively. The immobilized microorganisms on the carriers were examined by scanning electron microscopy （SEM）, and a large number of microorganisms were found on both the outer surface and the inside space of the prepared carriers. The results prove that the prepared carriers are efficient to immobilize anaerobic microorganisms.