The role of sulfur-oxidizing bacteria Thiobacillus thiooxidans in pyrite weathering

K. Sasaki, M. Tsunekawa, T. Ohtsuka, H. Konno

研究成果: Contribution to journalArticle査読

56 被引用数 (Scopus)

抄録

The role of the sulfur-oxidizing bacteria Thiobacillus thiooxidans in pyrite weathering was investigated to clarify the effects of the bacteria on the dissolution behavior of pyrite and the formation of secondary minerals using Raman spectroscopy and powder X-ray diffraction (XRD) in addition to solution analysis. It was found that T thiooxidans, when present with the iron-oxidizing bacteria Thiobacillus ferrooxidans, enhanced the dissolution of Fe and S species from pyrite, whereas T. thiooxidans alone did not oxidize pyrite. Enhancement of the consumption of elemental sulfur and regeneration of Fe(II) ions were also observed with T. thiooxidans together with T. ferrrooxidans, while this did not occur with T. ferrooxidans alone. It may be assumed that the contribution of T. thiooxidans to the formation of acid mine drainage on a geochemical scale should not be overlooked, though pyrite weathering is predominantly caused by iron-oxidizing activity in T. ferrooxidans.

本文言語英語
ページ(範囲)269-278
ページ数10
ジャーナルColloids and Surfaces A: Physicochemical and Engineering Aspects
133
3
DOI
出版ステータス出版済み - 2 28 1998
外部発表はい

All Science Journal Classification (ASJC) codes

  • 表面および界面
  • 物理化学および理論化学
  • コロイド化学および表面化学

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