Enhancing the activity of iron-oxidising bacteria: A case study with process liquors from heap bioleaching of a complex sulphide ore

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• 作者：Sarita H. Ahoranta ; ^{sarita.ahoranta@tut.fi} ; Minna K. Peltola¹ ; ^{mpeltola@solenis.com} ; Aino-Maija Lakaniemi ^{aino-maija.lakaniemi@tut.fi} ; Jaakko A. Puhakka ^{jaakko.puhakka@tut.fi}
• 关键词：Iron-oxidising bacteria ; Heap bioleaching ; Bacterial community composition ; Inhibition ; Nutrient limitation ; Aluminium toxicity
• 刊名：Hydrometallurgy
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：167
• 期：Complete
• 页码：163-172
• 全文大小：633 K
• 卷排序：167

文摘

Fe2+ concentrations up to 16 g/L did not inhibit the studied iron-oxidisers. Al3+ concentrations of 6 g/L and below enhanced iron oxidation rates. High cadmium, sulphate, and vanadium concentrations decreased iron oxidation rates. Ammonium supplementation to bioheaps would enhance the heap bioleaching process. High inhibitory ion content increases microbial sensitivity to nitrogen deficiency.