Research on Corn Stover Fermentation by Multi-Bacterium and Improvement of Fermentation Devices

Abstract

t was reported that more than 1 billion tons of straw is produced in China each year. Because of difficulties in degradation, farmers usually burn the straw by themselves. In this paper, corn stover was chosen to represent straw and microorganisms were used to produce organic fertilizer in order to render the straw harmless. Also organic fertilizer can improve soil quality and reduce the dosage of chemical fertilizers. 5 Microorganisms which were Bacillus subtilis, Bacillus licheniformis, Bacillus thermophiles, Pseudomonas stutzeri and Zymomonasmobilis were selected by high CMC enzymatic activity.Then, a multi-bacterium was designed which could improve fermentation efficiency. To save energy, water resources and improve fermentation efficiency, the fermentation device in the lab was improved.