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Microbial solubilization of coal.

C D Scott1, G W Strandberg, S N Lewis

  • 1Chemical Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831.

Biotechnology Progress
|June 23, 2010
PubMed
Summary
This summary is machine-generated.

Fungi can break down low-ranked coal into water-soluble organic compounds. Oxidative pretreatment improves this microbial coal solubilization process for potential bioreactor applications.

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Area of Science:

  • Biotechnology
  • Environmental Science
  • Microbial Chemistry

Background:

  • Certain fungal strains possess the capability to solubilize low-ranked coal.
  • This microbial coal solubilization occurs extracellularly.
  • Oxidative pretreatment can enhance the efficiency of microbial coal solubilization.

Purpose of the Study:

  • To investigate the potential of fungal strains for coal solubilization.
  • To explore the impact of oxidative pretreatment on microbial coal breakdown.
  • To characterize the water-soluble products derived from microbial coal solubilization.

Main Methods:

  • Utilizing various fungal strains for coal solubilization experiments.
  • Applying oxidative pretreatment to coal feedstocks before microbial treatment.
  • Analyzing the chemical composition of the resulting water-soluble products.
  • Considering bioreactor configurations for continuous processing.

Main Results:

  • Fungal strains effectively solubilize certain low-ranked coals.
  • Oxidative pretreatment significantly enhances microbial coal solubilization across diverse feedstocks.
  • The solubilized product is a water-soluble mixture of polar organic compounds with moderate to high molecular weights and high aromaticity.

Conclusions:

  • Microbial coal solubilization is a viable process, enhanced by oxidative pretreatment.
  • The resulting water-soluble organic compounds have potential applications.
  • Continuous bioreactor systems, such as fixed or fluidized beds, are feasible for this process.