Eggeman Tim, Elander Richard T
Neoterics International, 2319 S. Ellis Ct., Lakewood, CO 80228, USA.
Bioresour Technol. 2005 Dec;96(18):2019-25. doi: 10.1016/j.biortech.2005.01.017.
Five pretreatment processes (dilute acid, hot water, ammonia fiber explosion (AFEX), ammonia recycle percolation (ARP), and lime) for the liberation of sugars from corn stover are compared on a consistent basis. Each pretreatment process model was embedded in a full bioethanol facility model so that systematic effects for variations in pretreatment were accounted in the overall process. Economic drivers influenced by pretreatment are yield of both five and six carbon sugars, solids concentration, enzyme loading and hemicellulase activity. All of the designs considered were projected to be capital intensive. Low cost pretreatment reactors in some pretreatment processes are often counterbalanced by higher costs associated with pretreatment catalyst recovery or higher costs for ethanol product recovery. The result is little differentiation between the projected economic performances of the pretreatment options. Additional process performance data, especially involving the identification of optimal enzyme blends for each pretreatment approach and conditioning requirements of hydrolyzates at process-relevant sugar concentrations resulting from each pretreatment may lead to greater differentiation in projected process economics.
在一致的基础上，对用于从玉米秸秆中释放糖分的五种预处理工艺（稀酸、热水、氨纤维爆破（AFEX）、氨循环渗滤（ARP）和石灰）进行了比较。每个预处理工艺模型都嵌入到一个完整的生物乙醇工厂模型中，以便在整个过程中考虑预处理变化的系统影响。受预处理影响的经济驱动因素包括五碳糖和六碳糖的产量、固体浓度、酶负载量和半纤维素酶活性。所有考虑的设计预计都将是资本密集型的。一些预处理工艺中低成本的预处理反应器，往往会被与预处理催化剂回收相关的较高成本或乙醇产品回收的较高成本所抵消。结果是，预处理方案的预计经济性能之间差异不大。额外的工艺性能数据，特别是涉及为每种预处理方法确定最佳酶混合物，以及每种预处理在与工艺相关的糖浓度下产生的水解产物的调节要求，可能会导致预计工艺经济性上的更大差异。
