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Process and technoeconomic analysis of leading pretreatment technologies for lignocellulosic ethanol production using switchgrass
Bioresource Technology (2011)
  • Ling Tao, National Renewable Energy Laboratory
  • Andy Aden, National Renewable Energy Laboratory
  • Richard T. Elander, National Renewable Energy Laboratory
  • Venkata Ramesh Pallapolu, Auburn University
  • Y. Y. Lee, Auburn University
  • Rebecca G. Ong, Michigan State University
  • Venkatesh Balan, Michigan State University
  • Bruce E. Dale, Michigan State University
  • Youngmi Kim, Purdue University
  • Nathan S. Mosier, Purdue University
  • Michael R. Ladisch, Purdue University
  • Matthew Falls, Texas A&M University
  • Mark T. Holtzapple, Texas A&M University
  • Rocio Sierra-Ramirez, Universidad de Los Andes - Colombia
  • Jian Shi, University of California, Riverside
  • Mirvat A. Ebrik, University of California, Riverside
  • Tim Redmond, University of California at Riverside
  • Bin Yang, University of California, Riverside
  • Charles E. Wyman, University of California at Riverside
  • Bonnie Hames, Ceres, Inc.
  • Steve Thomas, Ceres, Inc.
  • Ryan E. Warner, Genencor
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 (SO2). 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.
  • pretreatment,
  • enzymatic hydrolysis,
  • biomass,
  • switchgrass,
  • process economics
Publication Date
August 4, 2011
Publisher Statement
© 2011 Elsevier Ltd.
Citation Information
Ling Tao, Andy Aden, Richard T. Elander, Venkata Ramesh Pallapolu, et al.. "Process and technoeconomic analysis of leading pretreatment technologies for lignocellulosic ethanol production using switchgrass" Bioresource Technology Vol. 102 Iss. 24 (2011) p. 11105 - 11114 ISSN: 0960-8524
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