| 营养成分对Fe2+生物氧化的影响 |
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| 引用本文： | 朱琳,李睿华.营养成分对Fe2+生物氧化的影响[J].环境工程学报,2012,6(6):1901-1906. |
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| 作者姓名： | 朱琳 李睿华 |
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| 作者单位： | 南京大学环境学院污染控制与资源化研究国家重点实验室,南京,210046 |
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| 基金项目： | 京大学环境学院污染控制与资源化研究国家重点实验室开放基金；国家自然科学基金资助项目(50978133) |
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| 摘 要： | 在29℃和160 r/min条件下,以广东云浮矿山酸性废水为种源,采用9K培养基,经过富集培养得到氧化亚铁硫杆菌A.f.a。利用分批摇床实验,研究了在A.f.a作用下,溶液初始NH4+-N、PO34--P、Mg2+、Ca2+和Cu2+等基本营养成分对Fe2+生物氧化的影响。结果显示,随着NH4+-N、PO34--P、Ca2+或Cu2+离子浓度增加,Fe2+生物氧化率都先增大后降低,各离子最佳浓度分别为84.8、35.6、2.4和254.5 mg/L;Fe2+生物氧化率随着Mg2+浓度的增加逐渐增大,并趋于稳定,其限制浓度为88.8 mg/L。上述结果可用于控制营养条件促进Fe2+的生物氧化。
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| 关 键 词： | 营养成分 硫酸亚铁 氧化亚铁硫杆菌 生物氧化 |
| 修稿时间： | 9/8/2011 12:00:00 AM |
Effects of nutrients on ferrous ion biooxidation |
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| Zhu Lin and Li Ruihua.Effects of nutrients on ferrous ion biooxidation[J].Techniques and Equipment for Environmental Pollution Control,2012,6(6):1901-1906. |
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| Authors: | Zhu Lin and Li Ruihua |
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| Institution: | Zhu Lin Li Ruihua(State Key Laboratory of Pollution Control and Resource Reuse,School of the Environment, Nanjing University,Nanjing 210046,China) |
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| Abstract: | A strain of Acidithiobacillus ferrooxidans(A.f.a) which was from acid mine drainage of Yunfu mine in Guangdong,was obtained by enrichment cultivation using 9K medium,on a rotary shaker at 160 r/min and a constant temperature of 29℃.The effects of nutrients such as NH+4-N,PO3-4-P,Mg2+,Ca2+ and Cu2+ on ferrous biooxidation by the strain A.f.a were studied with batch experiments.The results show that the ferrous biooxidation rate is tended to increase first and then decrease with increasing NH+4-N,PO3-4-P,Ca2+ or Cu2+ concentration.Their optimum concentrations are 84.8,35.6,2.4 and 254.5 mg/L,respectively.With increasing Mg2+ concentration,the ferrous biooxidation rate increases nearly to stability,and the limiting concentration is 88.8 mg/L.The results can be used to improve ferrous biooxidation by controlling the conditions of nutrients. |
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| Keywords: | nutrients ferrous sulphate Acidithiobacillus ferrooxidans biooxidation |
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