一株铜绿假单胞菌的溶磷特征及其对底泥中Pb的固定化

发布时间：2018-09-07 10:58

【摘要】：通过纯培养和模拟实验研究一株铜绿假单胞菌JM1对磷酸钙的溶解特征及其对底泥中Pb的固定化作用.结果表明:菌株JM1对磷酸钙和磷酸铝均具有溶解作用,96h内释放的溶解性正磷酸盐的质量浓度分别为240.63,92.73mg/L,培养液pH值分别下降至4.64,5.12,菌株JM1还可以利用卵磷脂进行生长但不释放磷酸根离子;菌株JM1使灭菌底泥与不灭菌底泥中固定化Pb的质量比分别增加至14.02,11.83mg/kg,即菌株JM1对底泥中的Pb具有较强的固定能力.
[Abstract]:The dissolution of calcium phosphate by Pseudomonas aeruginosa JM1 and its immobilization of Pb in sediment were studied by pure culture and simulated experiments. The results showed that the mass concentration of dissolved orthophosphate released by strain JM1 in 96 h was 240.63t92.73mg / L, and the pH value of culture medium decreased to 4.64n5.12.The strain JM1 could also use lecithin to grow. However, phosphate ion was not released. Strain JM1 increased the mass ratio of immobilized Pb in sterilized sediment and non-sterilized sediment to 14.02 mg / kg, respectively. That is to say, strain JM1 had strong fixation ability to Pb in sediment.
【作者单位】：吉林农业大学资源与环境学院;华中科技大学环境科学与工程学院;
【基金】：国家自然科学基金(批准号:51109089) 吉林省科技发展计划项目(批准号:20130206031NY;20160204025SF)
【分类号】：X52;X172

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