高耐锰活体霉菌Fusarium sp.处理锰废水的研究

Study on Treatment Manganese Wastewater Using Vivo Fusarium sp.-A High Manganese Resistant Fungus

采用梯度浓度稀释驯化的方法,从电解锰废渣中筛选分离出一株能高度耐锰和富集锰的菌株,通过分子生物学的初步鉴定为Fusarium sp.,该菌株在Mn2+浓度5 000 mg/L的液体培养基中能够生存,当Mn2+废水的初始浓度为500 mg/L时,pH值为6,摇瓶转速为150 r/min,于28℃培养50 h,A5菌对锰废水的处理效率达到97.5%,电镜扫描的结果表明,霉菌细胞表面在去除Mn2+中起重要作用。

A strain capable of tolerating and accumulating manganese was separated through concentration gradient taming technique from manganese slag and was identified preliminarily as Fusarium sp. by molecular biology method. This strain could survive in liquid mold medium containing 5 000 mg/L of Mn2＋. At the concentration of Mn2＋ 500 mg/L, pH value was 6, rotation speed was 150 r/min, 28 ℃ for 50 h, and the removal efficiency of Mn2＋ by A5 reached to 97.5%. Electron microscopic observation indicated that the cell wall of the strain played an important role in adsorbing Mn^2＋.