摘要
[目的]为利用微生物处理水中的F-提供理论依据.[方法]通过菌株的驯化、分离与筛选、富集培养和吸附平衡试验研究假单胞菌对水中F-的吸附特性[结果]18株细菌对F-的吸附能力相差很大，大部分细菌的吸附率都在10％～20％以内，细菌A，和生的吸附率分别为30．76％和33．4％，这2株细菌均被鉴定为假单胞菌。这2株细菌对初始浓度为20mg/L的F吸附效果最明显。2株细菌的F-吸附率在开始阶段增长很快，在前60min内，其F-吸附量占总吸附量的90％以上，稳定后吸附率约为22．69％和28．44％。在28℃时2株细菌的吸附率均达最大。pH为6时，假单胞菌A1的吸附率达到最高（2288％），pH=7时假单胞菌如吸附率达到最高（28．26％）。结论假单胞菌吸附F-的最适DH为6～7．最适温度为28℃.
[Objective]The purpose of the study was to provide theoretical foundation for dislmsing F in water with microorganism. [Method] The adsorption characteristics of pseudomonas to F^- in water were studied through domestieation, isolatiou and selection, enrichment culture and adsorption equilibrium test on its strains. [Result] There was very great difference among the adsorption abilities of the 18 bacterial strains to F^- and the adsorption rates of most bacteria were between 10% and 20%. 3he adsorption rates of bacteria Al and A3 were 30.76% and 33.4% resp. and both of them were identified to be pseudornonas. The adsorption effect of these 2 bacterial strains on F^- with initial conch, at 20 mg/L was most obvious and their adsorption rates to F^- was increasing rapidly in begiuning stage. In the 60 rain from beginning, their adsorption amounts of F- accounted for more than 90% of their total adsorption amount and their stabilized adsorption rates were ahout 22.69% and 28.44%. Their adsorption rates reached maximum at 28℃. When pH value was 6, the ＇adsorption rate of pseudomonas A1 reached its highest value （22.88%） and When pH value was 7, the adsorption rate of pseudornonas A3 reached its highest value （28.26%）. [ Conclusion] The optimum pH value was 6 - 7 and the optimum temperature was 28℃ for adsorbing F- with pseadomonas.
出处
《安徽农业科学》
CAS
北大核心
2009年第13期5838-5839,5842,共3页
Journal of Anhui Agricultural Sciences
关键词
氟离子
假单胞菌
吸附特性
Fluoride ions
Pseudomonas
Adsorption characteristics
