Microbial screening test for lignite degradation: Quarterly progress report No. 10 for the period April-June 1987

Technical Report · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6483629

Yen, Teh Fu

Optimization of sodium-methanol modification process was carried out. It was found that a longer reaction time and higher sodium dosage gave a higher yield of solubilized lignite. Incorporation of ethanol into solubilized lignite generated bioprecipitate. FT-IR analysis revealed the mechanism of precipitation and provided help to better understand the biodegradation process. Addition of acid solution to solubilized lignite promoted its separation into two fractions, which formed precipitate at pH 3.8 and 1.8 respectively. Benzene-methanol fraction of lignite was found to support the growth of the white-rot fungi S-1 which converted the solid benzene-methanol fraction into liquid products. Although there are no available detailed data about the bioliquid products from the benzene-methanol fraction of lignite, these products are expected to be organics of lower molecular weight than the original fraction. It is very possible that they constitute useful chemicals. Water-soluble fraction of lignite was separated by a dialysis membrane into a smaller fraction having a molecular weight of less than 3500. The dialyzed water-soluble fraction of lignite may be used as energy and/or carbon source for biological growth. 6 refs.

• Research Organization: University of Southern California, Los Angeles (USA)
• DOE Contract Number: FG22-84PC70809
• OSTI ID: 6483629
• Report Number(s): DOE/PC/70809-T14; ON: DE87011831
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ALCOHOLS
ALKALI METALS
BIOCONVERSION
BIODEGRADATION
BROWN COAL
CARBONACEOUS MATERIALS
CELL CULTURES
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL
COAL LIQUIDS
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FOURIER TRANSFORMATION
FRACTIONATION
FUELS
FUNGI
GAS CHROMATOGRAPHY
HYDROXY COMPOUNDS
INFRARED SPECTRA
INTEGRAL TRANSFORMATIONS
LIGNITE
LIQUIDS
MATERIALS
METALS
METHANOL
MODIFICATIONS
ORGANIC COMPOUNDS
PLANTS
SEPARATION PROCESSES
SODIUM
SPECTRA
TRANSFORMATIONS