National Bioenergy Center, National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401, USA.
Bioresour Technol. 2011 Dec;102(24):11105-14. doi: 10.1016/j.biortech.2011.07.051. Epub 2011 Aug 4.
Six biomass pretreatment processes to convert switchgrass to fermentable sugars and ultimately to cellulosic ethanol are compared on a consistent basis in this technoeconomic analysis. The six pretreatment processes are ammonia fiber expansion (AFEX), dilute acid (DA), lime, liquid hot water (LHW), soaking in aqueous ammonia (SAA), and sulfur dioxide-impregnated steam explosion (SO(2)). Each pretreatment process is modeled in the framework of an existing biochemical design model so that systematic variations of process-related changes are consistently captured. The pretreatment area process design and simulation are based on the research data generated within the Biomass Refining Consortium for Applied Fundamentals and Innovation (CAFI) 3 project. Overall ethanol production, total capital investment, and minimum ethanol selling price (MESP) are reported along with selected sensitivity analysis. The results show limited differentiation between the projected economic performances of the pretreatment options, except for processes that exhibit significantly lower monomer sugar and resulting ethanol yields.
六种生物质预处理工艺在本技术经济分析中进行了比较，以将柳枝稷转化为可发酵糖，并最终转化为纤维素乙醇。这六种预处理工艺分别为氨纤维膨胀（AFEX）、稀酸（DA）、石灰、液热水（LHW）、氨水溶液浸泡（SAA）和二氧化硫浸渍蒸汽爆炸（SO2）。每种预处理工艺都在现有的生化设计模型框架内进行建模，以便系统地捕捉与工艺相关的变化。预处理区域的工艺设计和模拟基于生物质精炼联盟应用基础和创新（CAFI）3 项目中生成的研究数据。报告了总乙醇产量、总资本投资和最低乙醇销售价格（MESP），以及选定的敏感性分析。结果表明，预处理方案的预期经济性能之间差异有限，除了那些表现出明显较低的单体糖和相应乙醇产量的工艺。
