Design and Initial Operation of a High-Solids, Pilot-Scale Reactor for Dilute-Acid Pretreatment of Lignocellulosic Biomass

  • Teh-An Hsu
  • Mike Himmel
  • Dan Schell
  • Jody Farmer
  • Mark Berggren
Part of the ABAB Symposium book series (ABAB, volume 57/58)


A recently installed 100-L horizontal shaft custom-fabricated mixer/reactor, made of Carpenter 20 Cb-3 stainless steel and designed for high-solids, dilute-acid pretreatment of lignocellulosic biomass, is described. Several preliminary runs with a hardwood and a herbaceous feedstock are reported; the results show the operation to be reliable with good reproducibility. No significant differences between comparable pretreatments in the high-solids reactor and a 1-L laboratory-scale reactor are apparent. Pretreatment efficiency is not affected by 10-15% (w/w) solids loading or biomass particle size of up to -10 mm. Mass balances are closed reasonably well, with improvement in reactor contents handling and biomass analytical methods desirable.

Index Entries

Dilute sulfuric acid pretreatment high-solids reactor pilot-scale reactor ethanol from biomass prehydrolysis 


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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • Teh-An Hsu
    • 1
  • Mike Himmel
    • 1
  • Dan Schell
    • 1
  • Jody Farmer
    • 1
  • Mark Berggren
    • 2
  1. 1.Alternative Fuels DivisionNational Renewable Energy LaboratoryGoldenUSA
  2. 2.Hazen Research, Inc.GoldenUSA

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