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Related Concept Videos

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 Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth.  Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
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Cellulosic ethanol: status and innovation.

Lee R Lynd1, Xiaoyu Liang1, Mary J Biddy2

  • 1Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, United States.

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Summary
This summary is machine-generated.

New methods for converting lignocellulose to ethanol show potential for cost reduction. Consolidated bioprocessing with cotreatment offers improved economic feasibility for cellulosic ethanol production.

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Area of Science:

  • Biotechnology
  • Biochemical Engineering
  • Renewable Energy

Background:

  • Cellulosic feedstocks are cost-competitive with petroleum on an energy basis.
  • Current lignocellulose conversion to ethanol is economically challenging.
  • Innovation is needed to reduce production costs.

Purpose of the Study:

  • To analyze a new-paradigm approach for cost-effective lignocellulose-to-ethanol conversion.
  • To evaluate consolidated bioprocessing with cotreatment using thermophilic bacteria.
  • To assess the potential for improved cost competitiveness and scalability.

Main Methods:

  • Analysis of consolidated bioprocessing (CBP) with milling during fermentation (cotreatment).
  • Focus on thermophilic bacteria for lignocellulose conversion.
  • Evaluation of configurational changes including fuel pellet coproduction and gas boilers.

Main Results:

  • Consolidated bioprocessing with cotreatment shows potential for radical cost reduction.
  • This new approach offers improved feasibility at smaller scales compared to current technologies.
  • R&D advances and configurational changes are key drivers for cost competitiveness.

Conclusions:

  • Consolidated bioprocessing with cotreatment represents a promising new-paradigm for cellulosic ethanol production.
  • The technology has the potential to significantly improve the economic viability of biofuels.
  • Further research and development are warranted to realize the full potential of this approach.