Biological Oxidation and Removal of Iron in Copper-Containing Acidic Mine Drainage by Using Siliceous Stones as Carrier Materials
| Autor: | Jun Hui Fan, Xing Yu Liu, Mingjiang Zhang, Qi Yuan Gu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
inorganic chemicals
Chemistry Mechanical Engineering chemistry.chemical_element 010501 environmental sciences Biological oxidation 010502 geochemistry & geophysics Acid mine drainage 01 natural sciences Copper Iron bacteria Mechanics of Materials Environmental chemistry General Materials Science Drainage 0105 earth and related environmental sciences |
| Zdroj: | Key Engineering Materials. 773:367-372 |
| ISSN: | 1662-9795 |
| DOI: | 10.4028/www.scientific.net/kem.773.367 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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