Study of Hydrogen Producing Capacity and Micro-Structure of the Crop Stalks after Ball Milling

摘要

Utilized the reducing sugar amount and cumulative hydrogen production that produced by the enzymolysis of the biomass crushed by the ball mill as reference, the experiments on the relationship between different sort of raw material and different reducing sugar yield show that the corncob reducing sugar yield and cumulative hydrogen production uptake after enzymolysis is highest, reaching 1088mL. Observed the microstructure of the crushing cornstalk and corncob with canning electron microscope and X-ray diffraction, the analysis results showed that: after ball mill crushing, biomass cell wall was effectively opened, specific surface increased, particle size decreased, the microstructure changed and became loose and porous, the cellulose degree of crystallinity were all aggressively lowered, cellulase accessibility increased, the biomass degrees of saccharifying rate improved, made the hydrogen producing capacity increased efficiency.