Influence of pulp density and bioreactor design on microbial desulphurization of coal

@article{Beyer2004InfluenceOP,
  title={Influence of pulp density and bioreactor design on microbial desulphurization of coal},
  author={Michael Beyer and Hans G. Ebner and J{\"u}rgen Klein},
  journal={Applied Microbiology and Biotechnology},
  year={2004},
  volume={24},
  pages={342-346}
}
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… CONTINUE READING