Biological Oxidation and Removal of Iron in Copper-Containing Acidic Mine Drainage by Using Siliceous Stones as Carrier Materials

Jun Hui Fan; Xing Yu Liu; Qi Yuan Gu; Ming Jiang Zhang

doi:10.4028/www.scientific.net/KEM.773.367

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 773Biological Oxidation and Removal of Iron in...

Biological Oxidation and Removal of Iron in Copper-Containing Acidic Mine Drainage by Using Siliceous Stones as Carrier Materials

Abstract:

Acid mine drainage is detrimental to the environment, which is rich of a variety of heavy metals, and has a low pH value and high acidity. The purpose of this paper is to study the bio-oxidation of ferrous iron and the selective precipitation of ferric iron, to gain a long-term effective solution to the environmental problem. The maximum ferrous iron bio-oxidation rate (76.19mg/L·h) was obtained at a low pH value of 3.0 and culture temperature of 30°C. In addition, we found a relatively higher ferric iron removal rate (99.18%) and the lowest copper loss rate (4.59%) at a pH value of 3.2 and reaction temperature of 30°C and stirring time of 4h.

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Periodical:

Key Engineering Materials (Volume 773)

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367-372

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.773.367

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Online since:

July 2018

Authors:

Jun Hui Fan, Xing Yu Liu*, Qi Yuan Gu, Ming Jiang Zhang

Keywords:

Acid Mine Drainage, Bio-Oxidation of Ferrous Iron, Iron-Oxidizing Bacteria, Removal of Ferric Iron

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