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Dual Pretreatment Strategy for Enhanced Biomass Hydrolysis

Dual Pretreatment Strategy for Enhanced Biomass Hydrolysis. G. Brodeur , S . Ramakrishnan and J.C. Telotte Department of Chemical and Biomedical Engineering FAMU – FSU College of Engineering. DA Treatment.

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Dual Pretreatment Strategy for Enhanced Biomass Hydrolysis

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  1. Dual Pretreatment Strategy for Enhanced Biomass Hydrolysis G. Brodeur, S. Ramakrishnanand J.C. Telotte Department of Chemical and Biomedical Engineering FAMU – FSU College of Engineering

  2. DA Treatment Even at the highest conversion there is still >15% of the material that is left inaccessible Dilute Acid Treatment (Pilot Plant) National Renewable Energy Laboratory (NREL) Corn Stover: 190ᵒC; 1 min; 50 mg H2SO4/g dry biomass Florida Center for Renewable Chemicals and Fuels (UF) Sugarcane Bagasse: 190ᵒC; 5 min; 0.5% w/w H3PO4 Lignin Pretreatment Cellulose Hemicellulose DA Treatment

  3. Amine Oxide Dissolution (NMMO) Cell OH H Cell N-methyl morpholine N-oxide (NMMO) monohydrate Treatment Conditions Moderate temperatures (100ᵒC) Short dissolution times (<3 hours) High solids loadings (up to 20% w/w) Petrovan et al., J. Appl. Polym. Sci.2001 This work reports data for 3-5% (w/w) Regeneration with anti-solvent (water) Benefits: Highly effective cellulose treatment Reported ability to recycle over 99% of solvent Biodegradable Raw feedstock will not completely dissolve - +

  4. Pretreatment Comparison ~98% Conversion ~91% Conversion Corn Stover Sugarcane Bagasse --Reaches maximum conversion of DATCS 48 hours faster!! --Nearly complete conversion after 72 hours

  5. Increased Loadings & NMMO Recycle Corn Stover Sugarcane Bagasse

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