菌群FYD降解偏二甲肼的动力学研究  

Degradation Kinetic Study of UDMH by Flora FYD

作　　者：范春华 王力 夏本立 谢珊珊 李建伟 

机构地区：[1]总装备部推进剂检测与防护中心,北京100101

出　　处：《含能材料》2014年第5期630-634,共5页Chinese Journal of Energetic Materials

基　　金：总装备部后勤部2009年度资助(ZH2009045)

摘　　要：用Haldane生长抑制动力学模型模拟了偏二甲肼(UDMH)高效降解菌群(FYD)的生长动力学过程,用Andrews非竞争性底物抑制动力学模型模拟了UDMH的降解动力学过程,拟合出动力学方程。通过拟合方程计算了比生长速率与比降解速率。结果表明,UDMH初始浓度为43.6980 mg·L-1时,菌群有最大比生长速率,UDMH初始浓度为50.2261 mg·L-1时,UDMH有最大比降解速率,理论值接近于实验值的50 mg·L-1。菌群FYD降解UDMH的产率系数为0.229,反映了菌群FYD对UDMH的耐受性和利用情况。比生长速率与比降解速率的线性关系表明,在菌群FYD降解UDMH过程中存在物料平衡,细胞生长随UDMH浓度的变化存在合理性。The growth kinetic process of efficient bacteria flora（FYD）for degrading unsymmetrical dimethyl hydrazine（ UDMH） was simulated by Haldane kinetic model of growth inhibition. The degradation kinetic process of UDMH was simulated by Andrews noncompetitive kinetic model of substrate inhibition. The kinetic equations were fitted out,and the ratio growth rate and ratio degradation rate were calculated by the fitted equations. Results show that when the initial concentration of UDMH is 43. 6980 mg·L -1 ,the flora has maximum ratio growth rate. When the initial concentration of UDMH is 50. 2261 mg·L -1 ,the UDMH has maximum ratio degradation rate. The theoretical value is very close to the experimental one as UDMH concentration is 50 mg·L -1 . The yield coefficient that FYD degrades UDMH is 0. 229,which reflects the tolerance and utilization ability of FYD to UDMH. The linear relationship between the maximum ratio growth rate and the maximum ratio degradation rate shows a material balance exists in the process of degrading UDMH by flora FYD. The change in cell growth with UDMH concentration exists bacte-ria rationality.

关 键 词：物理化学 偏二甲肼(UDMH) 动力学 生物降解 高效菌群 

分 类 号：TQ560.1[化学工程—炸药化工]