降解低浓度二氧化硫废气的菌株分离及其固定化研究  

Isolation of bacteria with the ability of degrading sulfur dioxide and research on their immobilization

作　　者：宣群[1] 肖文彦[1] 张玲琪[1] 黄兵[2] 孙佩石[2] 曹桂萍[2] 刘仕平[1] 郭仕平[1] 杨春燕[1] 

机构地区：[1]云南大学生物系,云南昆明650091 [2]昆明理工大学环境科学与工程学院,云南昆明650093

出　　处：《云南大学学报（自然科学版）》2003年第2期157-160,共4页Journal of Yunnan University(Natural Sciences Edition)

基　　金：云南省科学基金青年基金资助项目(99B0005Q).

摘　　要：从硫泉中分离得到17株细菌,用碘量法测定了它们氧化降解SO2的性能.结果表明,菌株R-1氧化降解性能较强,经鉴定,R-1是氧化亚铁硫杆菌(Thiobacillusferrooxidans).用海藻酸钠(sodiumalginate)进行固定化包埋试验,通过单因素分析,确定了最佳包埋条件.用上柱通气法测定其净化气相SO2的能力,其氧化降解SO2的效率最高达97.01%.结果显示,利用固定化细菌净化低浓度SO2烟气具可行性,但对其稳定性尚待进一步研究.Seventeen bacterial strains were isolated from springs and their capabilities of degrading sulfur dioxide were tested.The results showed that the strain R1 (Thiobacillus ferrooxidans) had stronger SO2 degrading capability.Sodium alginate was used to embed strain R1 and effects of single factors on SO2 degrading capability were analyzed.Sulfur dioxide gas was flowed through the shaft filled with CA balls,and the SO2 degrading rate was calculated as high as 97.01%.The results indicated that immobilized bacteria could be used to deal with SO2 gas of low concentration but their stability needs further investigation.

关 键 词：二氧化硫 氧化亚铁硫杆菌 降解性能 海藻酸钠 固定化细菌 

分 类 号：Q939.99[生物学—微生物学]