0.225 kg xylose with 95% purity, 4.16 kg ST hydrolyzate containing 5.5% lignosulfonate, 0.183 kg ethanol and 0.05 kg lignin residue. If the current typical ethanol production process from WS was used, the AT hydrolyzate containing xylose was recovered for ethanol production and the lignin residue after enzymatic hydrolysis was burned for electricity. Even if the cellulose and hemicellulose in WS were completely converted to ethanol, 1 kg WS could produce 0.334 kg ethanol and 0.182 kg lignin residue for electricity. At present, the price of xylose with 95% purity, ST hydrolyzate containing