生物絮凝剂产生菌群发酵特性及动力学  

Fermentation properties and kinetics of compound bioflocculant-produced bacteria

作　　者：夏丽容[1] 信欣[1,2] 周迎芹[1] 裴瑞林[1] 姚力[1] 

机构地区：[1]成都信息工程学院资源环境学院,成都610225 [2]中国地质大学生物地质与环境地质国家重点实验室,武汉430074

出　　处：《环境工程学报》2012年第8期2909-2912,共4页Chinese Journal of Environmental Engineering

基　　金：中国地质大学生物地质与环境地质国家重点实验室(BGEG1009);四川省教育厅资助科研项目(08zb057)

摘　　要：从土壤中分离、筛选得到2株具有协同发酵的微生物絮凝剂产生菌。通过单因素实验考察了碳源、氮源、不同C/N等多种发酵条件对复合菌株产絮的影响,并对复合菌株的生长动力学进行了研究。当碳源为蔗糖、氮源为草酸铵、C/N为30∶1,pH=7.0、在30℃,160 r/min的摇床速度下培养24 h,其发酵液对4 g/L的高岭土的悬浊液的絮凝率达到99.3%。根据Logistic方程,得到复合型生物絮凝剂产生菌群的生长动力学模型与实验数据能较好地拟合,基本反映了复合菌群生长的动力学特征。Two microbial flocculant-produced bacterial strains of cooperative fermentation were islated from soils. This research was focused on the effects of fermentation culture on floceulation activity such as carbon source, nitrogen source and C/N by single-factor test. The fermentation kinetics was analyzed. The results show that the optimal flocculating rate of complex bacteria fermenting liquid to 4 g/L kaolin suspension was up to 99.3% when the carbon source, nitrogen source, C/N, pH, temperature, rotation speed and culture time were sucrose, ammonium oxalate, 30： 1, 7.0, 30C, 160 r/min, 24 h, respectively. Based on the equations of Logistic equa- tion, the model calculations and the experiment data were fit well and the model appeared to provide a reasonable description for growth kinetics of compound bioflocculant-produced bacteria.

关 键 词：复合生物絮凝剂 发酵特性 动力学 

分 类 号：X703.1[环境科学与工程—环境工程]