Effect of Fe (Ⅲ) Supply Rate on the Formation of Amorphous Schwertmannite
详细信息
- 责任者：Bai Shuangyou (Department of Environmental Engineering ; College of Resources and Environmental Sciences ; Nanjing Agricultural University ; Nanjing 210095 ; China) ; Liang Jianru
- 刊名：Acta Mineralogica Sinica
- 出版年：2011
- 卷期：31(2)
- 关键词：铁 ; iron ; 环境 ; environment ; 微生物 ; microorganisms
- 页码：p.256-262
- 图表：5 illus., 2 tables, 35 refs.
- 分类号：0700
- 出版序号：792
- issnNo：ISSN1000-4734
- isbnNo：CN52-1045/P
摘要
Schwertmannite has been proven to be a novel material which has specific adsorbability for heavy metals or metalloid. However the chemically synthesized schwertmannite often contained impurities such as jarosite when this mineral was formed by using Fe3+ directly or oxidizing Fe2+ with the strong oxidant. It was observed that either amorphous schwertmannite or crystalline jarosite existed at the critical point of jarosite formation in FeSO4-K2SO4-H2O system by Acidithiobacillus ferrooxidans, depended on the rate of Fe3+ supply. Therefore, this study provided the possibility for synthesizing pure biogenic schwertmannite in conventional inorganic salt medium system by A. ferrooxidans cells.