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Influence of pulp density and bioreactor design on microbial desulphurization of coal (1986)

Beyer, Michael ; Ebner, Hans G. ; Klein, Jürgen

Springer

Applied microbiology and biotechnology 24 (1986), S. 342-346

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ISSN: 1432-0614

Source: Springer Online Journal Archives 1860-2000

Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology

Notes: Summary Pyrite was microbiologically removed by Thiobacillus ferrooxidans in pure and mixed cultures from German bituminous coal at 10% pulp density with maximum pyrite oxidation rate of 350 mg pyritic S/l per day. However, at pulp densities above 20% bacterial growth and consequently pyrite oxidation were completely prevented both in a conventional airlift reactor and in a stirred-tank reactor. Modifying the airlift reactor by adapting a conical bottom part, bacterial growth and pyrite oxidation could be achieved even at 30% pulp density, resulting in a pyrite removal of more than 90% at a pyrite oxidation rate of 230 mg pyritic S/l per day.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00257061

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