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硫氧化细菌的分离鉴定及降解特性

DOI: 10.3724/SP.J.1145.2011.00706, PP. 706-710

Keywords: 硫氧化细菌,根瘤菌属,硫化钠,生物降解,污水处理

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Abstract:

从浙江华海药业污水处理系统中分离得到一株硫氧化细菌t3,基于形态特征、生理生化、16srrna基因序列系统学分析和biolog鉴定系统分析,鉴定该菌株为根瘤菌属.摇瓶实验结果表明,t3生物降解最适生长温度为30℃,最适ph值为8.0,外加氯化铵、碳源对菌株生长及硫化钠降解有促进作用,驯化后的硫氧化细菌对硫化钠有很强的耐受能力,最优生长条件下,2d内菌株t3能将400mg/l以下浓度的硫化钠降解彻底,是一株有应用前景的硫氧化细菌.通过测定代谢过程中各种物质的含量,确定该菌株对硫化钠的去除机理为s2-→s2o32-/s0→so32-→so42-.图8表1参18

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