一株好氧反硝化菌的分离及特性研究

Isolation and characterization of an aerobic denitrifier

从土壤中分离得到一株好氧反硝化细菌F6,该菌株在好氧条件下具有反硝化能力。亚硝酸盐氮初始浓度为250 mg/L时,该菌株在48 h内亚硝酸盐氮去除率为64.40%。通过形态学特征、生理生化特性及16S rDNA同源性比较对菌株F6进行鉴定,初步判断其为嗜碱副球菌(Paracoccus alcaliphilus)。

An aerobic denitrifying bacterial strain F6 was isolated from soil. The denitrifying experiment results showed that under aerobic conditions the reduction efficiency within 30 hours was up to 64.40% respectively with initial NO2-N concentration of 250 mg/L. On the basis of its physiological and molecular properties, strain F6 was identified as Paracoccus alcaliphilus.