Method for solubilizing coal using microorganisms

摘要

The present invention is characterized in that a culture prepared by culturing a Poria cocos mold with a solid or liquid shake is added with coal pretreated with 8N nitric acid or 30% hydrogen peroxide and cultured at 25C to 30C for 2 to 10 days A method of lignification by microbial fermentation is provided. From the viewpoint of preventing precipitation of lignite and promoting liquefaction, cultivation using an air part culture fermenter is preferable.