Bioprocessing of lignite coals using reductive microorganisms

Technical Report · Sun Mar 29 00:00:00 EST 1992

DOI:https://doi.org/10.2172/7233253· OSTI ID:7233253

Crawford, D L

In order to convert lignite coals into liquid fuels, gases or chemical feedstock, the macromolecular structure of the coal must be broken down into low molecular weight fractions prior to further modification. Our research focused on this aspect of coal bioprocessing. We isolated, characterized and studied the lignite coal-depolymerizing organisms Streptomyces viridosporus T7A, Pseudomonas sp. DLC-62, unidentified bacterial strain DLC-BB2 and Gram-positive Bacillus megaterium strain DLC-21. In this research we showed that these bacteria are able to solubilize and depolymerize lignite coals using a combination of biological mechanisms including the excretion of coal solublizing basic chemical metabolites and extracellular coal depolymerizing enzymes.

• Research Organization: Idaho Univ., Moscow, ID (United States). Dept. of Bacteriology and Biochemistry
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG22-88PC88919
• OSTI ID: 7233253
• Report Number(s): DOE/PC/88919-T6; ON: DE92018523
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
59 BASIC BIOLOGICAL SCIENCES
LIGNITE
BIOCONVERSION
DEPOLYMERIZATION
BACILLUS MEGATERIUM
ENZYMES
PROGRESS REPORT
PSEUDOMONAS
SOLUBILITY
STREPTOMYCES
BACILLUS
BACTERIA
BROWN COAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
DECOMPOSITION
DOCUMENT TYPES
ENERGY SOURCES
FOSSIL FUELS
FUELS
MATERIALS
MICROORGANISMS
ORGANIC COMPOUNDS
PROTEINS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
550700 - Microbiology