一株产絮凝剂不动杆菌的筛选及其絮凝特性-微生物所期刊联合编辑部.PDF

微生物学通报 FEB2) 178~182 Microbiology ©2008 by Institute of Microbiology, CAS tongbao@ 研究报告 一株产絮凝剂不动杆菌的筛选及其絮凝特性 1 1 1 1 1 2* 王兆慧 叶 辉 常 燕 徐 磊 曹 军 尹立红 (1. 226007) (2. 210096) 摘 要: 从活性污泥中筛选出一株高效的微生物絮凝剂产生菌, 鉴定为鲍曼不动杆菌。蚕豆根尖 细胞微核试验未显示该菌株所产絮凝剂具有遗传毒性。该菌产絮凝剂的最佳碳源和氮源分别为葡 萄糖和酵母浸出汁, 培养时间为24 h 。在絮凝体系中加入Ca2+ 能明显提高发酵液的絮凝率。在pH 为8.0 时对高岭土悬浊液和污水具有良好的絮凝效果。 关键词: 絮凝剂, 絮凝能力, 鲍曼不动杆菌, 污水处理 Screening and Flocculating Characteristics of a Flocculat- ing-producing Strain of Acinetobacter sp. WANG Zhao-Hui1 YE Hui1 CHANG Yan1 XU Lei1 CAO Jun1 YIN Li-Hong2* (1. Life Science School, Nantong University, Nantong 226007) (2. Public Health School, Southeast University, Nanjing 210096) Abstract: An effective flocculant-producing microorganism was isolated from activated sludge which was identified as Acinetobacter baumannii . Its genetic toxicity is checked by the Vicia faba root-tip cells micro- nucleus test, the result has not demonstrated the genetic toxicity. The best carbon sources and nitrogen sources for flocculant production are glucose and yeast extract, the cultivation time is 24 hours. Addition of Ca2+ could obviously increase the flocculating rate. It has good flocculating effect on Kaolin suspension and sewage with pH at the scale of 8.0. Keywords: Flocculants, Flocculating activity, Acinetobacter baumannii , Wastewater treatment Al3+ [1] ,