摘要：In this paper, porous polymeric carrier of polyacrylamide was synthesized by means of gamma irradiation and applied for immobilization of bacterial strain, which was capable of degrading pyridine. During radiation-induced polymerization process, saturated NaCl solution was used as reaction medium and NaCl granules were used as pore-forming agent. The suitable dose was determined to be 30 kGy, and the average size of pores was about 50 to 100 ^m. The observation of SEM (scanning electron microscopy) showed that dense populations of Bacillus sp. grew well inside the carrier. The immobilized Bacillus sp. was capable of degrading up to 500 mg/L pyridine completely within 30 h. The microbial cells of Bacillus sp. immobilized by macro-porous polyacrylamide had the potential ability to be applied in a wastewater treatment system for the removal of pyridine.
