Abstract
Jurassic weak & non-stick coal in Hengshan of North Shaanxi Province was pretreated by the nitric acid. Then, it was biodegraded by Phanerochaete chrysosporium. The biodegradation role of the white-rot fungus for coal is extremely significant. Orthogonal test demonstrate that liquefied time, liquefaction temperature and the amount of fungus liquids etc. are the main factors affecting the coal biodegradation rate. The best technical condition of the coal biological liquefaction was got. Comparing the coal sample before biodegradation with that after biodegradation, it is found that the ash of the coal residue after biodegradation reduces significantly, H and O contents increase, C and N contents decrease. The biodegradation change the coal macromolecular structure.
Published Version
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