XRD analysis was performed on a four circle goniometer (XRD- 6000 Lab X Shimatzu) using CuKa radiation generated at 40 kV and 30 mA. Scans were obtained from 5 to 90 2h with the scan speed of 4/min. The samples, consisted of raw biomass (oak wood, pine wood, and EFB) and lignin as the side product from hydrolysis of each raw biomass (oak lignin, pine lignin, and EFB lignin), were crushed and sieved into size of 106–150 lm and they all were mounted onto a quartz holder during the analysis.