Idaho National Laboratory, Biofuels and Renewable Energy Technologies, P.O. Box 1625, Idaho Falls, ID 83415, USA.
MBI International, 3815 Technology Boulevard, Lansing, MI 48910, USA.
Bioresour Technol. 2014 Jul;164:128-35. doi: 10.1016/j.biortech.2014.02.005. Epub 2014 Feb 11.
Pelletization process variables, including grind size (4, 6mm), die speed (40, 50, 60 Hz), and preheating (none, 70°C), were evaluated to understand their effect on pellet quality attributes and sugar yields of ammonia fiber expansion (AFEX) pretreated biomass. The bulk density of the pelletized AFEX corn stover was three to six times greater compared to untreated and AFEX-treated corn stover. Also, the durability of the pelletized AFEX corn stover was>97.5% for all pelletization conditions studied except for preheated pellets. Die speed had no effect on enzymatic hydrolysis sugar yields of pellets. Pellets produced with preheating or a larger grind size (6mm) had similar or lower sugar yields. Pellets generated with 4mm AFEX-treated corn stover, a 60Hz die speed, and no preheating resulted in pellets with similar or greater density, durability, and sugar yields compared to other pelletization conditions.
颗粒化过程变量，包括研磨粒径（4、6mm）、模具速度（40、50、60Hz）和预热（无、70°C），被评估以了解它们对颗粒质量特性和氨纤维膨胀（AFEX）预处理生物质糖产量的影响。与未处理和 AFEX 处理的玉米秸秆相比，颗粒化 AFEX 玉米秸秆的堆密度增加了三到六倍。此外，在研究的所有颗粒化条件下，除了预热颗粒外，颗粒化 AFEX 玉米秸秆的耐久性>97.5%。模具速度对颗粒的酶解糖产量没有影响。经过预热或较大研磨粒径（6mm）的颗粒具有相似或较低的糖产量。用 4mm 的 AFEX 处理的玉米秸秆、60Hz 的模具速度和无预热产生的颗粒具有与其他颗粒化条件相似或更高的密度、耐久性和糖产量。
