微生物絮凝剂连续化生产及其稳定性研究  

Studies on Continuous Production and Stability of Bioflocculant

作　　者：白京生[1] 王兰[2] 

机构地区：[1]天津渤海职业技术学院,天津300221 [2]南开大学环境科学与工程学院,天津300071

出　　处：《生物技术》2007年第1期75-78,共4页Biotechnology

基　　金：天津渤海职业技术学院科研启动基金项目资助(No.00200604BH01)

摘　　要：利用多孔聚酯泡沫为载体,进行微生物絮凝剂产生菌的固定化及连续生产絮凝剂的研究。研究发现,利用多孔聚酯泡沫可吸附固定XN1菌丝细胞,且能较长时间保持高的活性。固定化XN1菌在三相流化床反应器中连续发酵运行13d无发现菌膜脱落现象,且发酵液絮凝活性均维持在90%以上,说明利用多孔聚酯泡沫颗粒作为固定化载体,连续生产絮凝剂的方法是可行的。另外,研究还发现,该菌所产生絮凝剂具有较高的热稳定性,在反应器中室温下保存数日仍可维持较高的絮凝活性。Using lacunaris polyester as immobilized carrier,The immobilized of XN1 and continuous production of bioflocculant were studied in this paper.The results showed that lacunaris polyester can adsorb mycelial cell of XN1 and retain high flocculating activity for long time.Biofilm detachment could not be observed in a three-phase fluidized bed after culturing 13 days and the flocculating activity values of fermentation broth were more than 90%.It revealed that immobilized XN1 could produce bioflocculant using lacunaris polyestez as inanobilized carrier. The bioflocculant had high thermal stability and could retain high flocculating activity after a few days at room temperature.

关 键 词：絮凝菌 固定化 连续生产 稳定性 微生物絮凝剂 

分 类 号：X172[环境科学与工程—环境科学]