摘要
研究了在常用的细菌浸出条件下 (t=30℃ ,pH 2 .0 ) ,Mg2 + 对氧化亚铁硫杆菌 (T .f)生长活性的影响。结果表明 ,该实验所用菌株具有一定的耐Mg2 + 能力 ;当培养基中 ρ(Mg2 + )≤ 10 .5 g/L时 ,Mg2 + 对细菌的生长活性没有不利的影响 ;ρ(Mg2 + ) 15 .5 g/L时对细菌生长活性的影响较明显 ;ρ(Mg2 + ) 2 0 .5 g/L时细菌的生长完全受到抑制。经驯化后的该菌株耐Mg2 + 性明显提高 ,在含 ρ(Mg2 + ) 15 .5g/L的培养基中细菌的生长活性良好。
The effect of Mg 2+ on the growth and activity of Thiobacillus ferrooxidans (T.f) was studied under the common bioleaching condition of 30℃ and pH 2.0. Experimental results show that the T.f used in this experiment was tolerant of Mg 2+ to some extent. No bad effect on the growth and activity of T.f by Mg 2+ was brought when cultured in Leathen medium containing ρ (Mg 2+ )≤10.5 g/L. The growth and activity of T.f are obviously influenced when ρ (Mg 2+ )15.5 g/L. But the growth and activity of T.f cease when the concentration of Mg 2+ is around 20.5 g/L. The T.f can tolerate the concentration of Mg 2+ 15.5 g/L in the culture medium after a period of adaptation by repeated subculturing.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2000年第4期576-578,共3页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金!资助项目 ( 5 983 4 15 0 )
关键词
氧化亚铁硫杆菌
生长活性
细菌浸出
镁离子
Thiobacillus ferrooxidans
growth and activity
tolerance of Mg 2+
