The formation of illite from nontronite by mesophilic and thermophilic bacterial reaction

Deb P. Jaisi, Dennis D. Eberl, Hailiang Dong, Jin-Wook Kim

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The formation of illite through the smectite-to-illite (S-I) reaction is considered to be one of the most important mineral reactions occurring during diagenesis. In biologically catalyzed systems, however, this transformation has been suggested to be rapid and to bypass the high temperature and long time requirements. To understand the factors that promote the S-I reaction, the present study focused on the effects of pH, temperature, solution chemistry, and aging on the S-I reaction in microbially mediated systems. Fe(III)-reduction experiments were performed in both growth and non-growth media with two types of bacteria: mesophilic (Shewanella putrefaciens CN32) and thermophilic (Thermus scotoductus SA-01). Reductive dissolution of NAu-2 was observed and the formation of illite in treatment with thermophilic SA-01 was indicated by X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM). A basic pH (8.4) and high temperature (65°C) were the most favorable conditions forthe formation of illite. A long incubation time was also found to enhance the formation of illite. K-nontronite (non-permanent fixation of K) was also detected and differentiated from the discrete illite in the XRD profiles. These results collectively suggested that the formation of illite associated with the biologically catalyzed smectite-to-illite reaction pathway may bypass the prolonged time and high temperature required for the S-I reaction in the absence of microbial activity.

Original languageEnglish
Pages (from-to)21-33
Number of pages13
JournalClays and Clay Minerals
Volume59
Issue number1
DOIs
Publication statusPublished - 2011 Feb 1

Fingerprint

nontronite
illite
smectite
bypass
X-ray diffraction
Thermus scotoductus
temperature
Shewanella putrefaciens
X ray diffraction
Temperature
High resolution transmission electron microscopy
microbial activity
diagenesis
fixation
Minerals
transmission electron microscopy
Bacteria
Dissolution
chemistry
Aging of materials

All Science Journal Classification (ASJC) codes

  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth and Planetary Sciences (miscellaneous)

Cite this

Jaisi, Deb P. ; Eberl, Dennis D. ; Dong, Hailiang ; Kim, Jin-Wook. / The formation of illite from nontronite by mesophilic and thermophilic bacterial reaction. In: Clays and Clay Minerals. 2011 ; Vol. 59, No. 1. pp. 21-33.
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The formation of illite from nontronite by mesophilic and thermophilic bacterial reaction. / Jaisi, Deb P.; Eberl, Dennis D.; Dong, Hailiang; Kim, Jin-Wook.

In: Clays and Clay Minerals, Vol. 59, No. 1, 01.02.2011, p. 21-33.

Research output: Contribution to journalArticle

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