"Bioshrouding" - A novel approach for securing reactive mineral tailings

D. Barrie Johnson, Liu Yajie, Naoko Okibe

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A novel technique ("bioshrouding") for safeguarding highly reactive sulfidic mineral tailings deposits is proposed. In this, freshly milled wastes are colonised with ferric iron-reducing heterotrophic acidophilic bacteria that form biofilms on reactive mineral surfaces, thereby preventing or minimising colonisation by iron sulfide-oxidising chemolithotrophs such as Acidithiobacillus ferrooxidans and Leptospirillum spp. Data from initial experiments showed that dissolution of pyrite could be reduced by between 57 and 75% by "bioshrouding" the mineral with three different species of heterotrophic acidophiles (Acidiphilium, Acidocella and Acidobacterium spp.), under conditions that were conducive to microbial oxidative dissolution of the iron sulfide.

Original languageEnglish
Pages (from-to)445-449
Number of pages5
JournalBiotechnology letters
Volume30
Issue number3
DOIs
Publication statusPublished - Mar 1 2008
Externally publishedYes

Fingerprint

Tailings
Minerals
Iron
Sulfides
Acidiphilium
Dissolution
Acidithiobacillus
Acidobacteria
Pyrites
Biofilms
Bacteria
Deposits
Experiments

All Science Journal Classification (ASJC) codes

  • Biotechnology

Cite this

"Bioshrouding" - A novel approach for securing reactive mineral tailings. / Johnson, D. Barrie; Yajie, Liu; Okibe, Naoko.

In: Biotechnology letters, Vol. 30, No. 3, 01.03.2008, p. 445-449.

Research output: Contribution to journalArticle

Johnson, D. Barrie ; Yajie, Liu ; Okibe, Naoko. / "Bioshrouding" - A novel approach for securing reactive mineral tailings. In: Biotechnology letters. 2008 ; Vol. 30, No. 3. pp. 445-449.
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