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

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

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)269-278
Number of pages10
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume133
Issue number3
DOIs
Publication statusPublished - Feb 28 1998
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Fingerprint Dive into the research topics of 'The role of sulfur-oxidizing bacteria Thiobacillus thiooxidans in pyrite weathering'. Together they form a unique fingerprint.

Cite this