a process to produce solid glucose from a hydrolyzate consisting of a mixture of glucose , water , and an acid used in the hydrolysis of a biomass material is covered herein . in the process , the hydrolyzate is concentrated , as required , to form two phases : a solid glucose phase and an acidic liquid phase . the phases are formed in a vessel where they are separated for recovery of the acidic liquid phase . the solid glucose phase , containing residual acidic liquid phase , is then extracted to remove most of the residual acid to produce solid glucose mostly free of acid . the recovered acid may then be recycled . the solid glucose may be further processed including purification and also drying .