2019 Volume 98 Issue 12 Pages 333-339
In this study, scale-up and continuous pulverization of a vibration mill with ring media were promoted for pretreatment of lignocellulose biomass. In continuous pulverization, coarse powder that passes through the inside of the ring media without being crushed was generated. Then continuous pulverization with a ring and rod combination was examined to suppress the powder flow passing through the ring hole and to increase pulverization force. First, batch pulverization with the ring and rod combination was examined. Results demonstrate that filling the rod media inside the hole of the ring media improved the micronizing efficiency in large amounts of Japanese cedar powder and increased the saccharification efficiency during the initial stage of pulverization. Based on the results, continuous pulverization was examined. The powder flow suppression effect was fundamentally confirmed. Furthermore, powder properties by continuous pulverization were confirmed to be improved in median size and the enzymatic saccharification efficiency by the filling rate of rods from 40% to 50%. Therefore, the ring and rod combination was found to be effective for continuous pulverization using a tandem ring mill.
