Ball Milling for Biomass Fractionation and Pretreatment
The <1.00 mm sample was further ground by a vibration ball mill Qinhuangdao Taiji Ring Nano Products ., Hebei, China to obtain ultrafine powder. Ultrafine grinding was performed by mixing <1.00 mm wheat straw with ZrO 2 balls 610 mm in diameter in a volume ratio of 1:2 for 8 h with the temperature being maintained below 30 °C


































