报告题目：Pilot-Scale Demonstration of SPORL for Bioconversion of Forest Residue: Process Scale-up Design and　Inhibitor Reduction for High Solids Fermentation without Detoxification（用于木材生物转化的预处理技术）
　　演讲人：Junyong Zhu
　　USDA Forest Service, Forest Products Laboratory, Madison, WI；Dept. of Biological Systems Engineering, University of Wisconsin-Madison, Madison, WI
　　报告时间：2013年12月9日下午3点
　　报告地点：制浆造纸工程国家重点实验室306会议室

制浆造纸工程国家重点实验室

二〇一三年十一月二十一日

　　内容介绍：
　　Sulfite Pretreatment to Overcome the Recalcitrance of Lignocelluloses (SPORL) has demonstrated robust performance for effective bioconversion of forest biomass. A combined hydrolysis factor (CHF) was developed as a severity factor to scale-up pretreatment of 50 kg Douglas-fir forest residue using a pilot scale wood pulping digester of 375 L. The same CHF = 22.5 based on the optimal lab scale pretreatment was used to design pilot scale pretreatment at a low temperature of 165°C for 75 min to balance inhibitor formation and sugar yield.The same chemical loading and liquor to wood ratio of 3 as those for the optimal pretreatment was used.The pretreated solidwas blown into a tank and disk-milled. Noncondensable such as SO2 were wet scrubbed.  HMF and furfural concentration were only 0.84 and 0.96 g/L, respectively, significantly lower than 2.12 and 2.23 g/L for the lab scale optimalrun.Excellenttotal glucose yield of 87% was achieved with mannose recovery of 71%.The unwashed milled-solids and liquor (whole slurry) were combined for direct simultaneous saccharification and combined fermentation without detoxification using CTec3 at 0.7 g/g glucan using YRH400.  Excellent ethanol yield of over 291 L/ton wood at high titer of 49 g/L were achieved.
　　演讲人介绍：
　　Dr. J.Y. Zhu is a scientific team leader in woody biomass utilization for sugar/biofuel, chemicals, fiber, and cellulose nanomaterials production at the US Forest Service, Forest Products Laboratory (the only U.S. National Lab in Wood Utilization), Madison, Wisconsin.  He currently holds an Adjunct Professorship at the Dept. of Biological Systems Engineering, University of Wisconsin-Madison.  Dr. Zhu serves on the editorial boards of several technical journals, including TAPPI Journal (also a Technical Editor), BioEnergy Research (also an Associate Editor), China Pulp and Paper, BioResources, J. Biobased Materials and Bioenergy.  Dr. Zhu is an elected fellow of the International Academy of Wood Science (IAWS).  He is also the Vice Chair of Forest Plant and Bioproducts Division of the American Institute of Chemical Engineers (AIChE). He is also the Vice Chair of TAPPI Bioenergy Committee.