Cellulosic Biomass Pretreatment and Sugar Yields as a Function of Biomass Particle Size

Abstract

Three lignocellulosic pretreatment techniques (ammonia fiber expansion, dilute acid and ionic liquid) are compared with respect to saccharification efficiency, particle size and biomass composition. In particular, the effects of switchgrass particle size (32-200) on each pretreatment regime are examined. Physical properties of untreated and pretreated samples are characterized using crystallinity, surface accessibility measurements and scanning electron microscopy (SEM) imaging. At every particle size tested, ionic liquid (IL) pretreatment results in greater cell wall disruption, reduced crystallinity, increased accessible surface area, and higher saccharification efficiencies compared with dilute acid and AFEX pretreatments. The advantages of using IL pretreatment are greatest at larger particle sizes (>75 µm).

DOI: 10.1371/journal.pone.0100836

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Cite this paper

@inproceedings{Dougherty2014CellulosicBP, title={Cellulosic Biomass Pretreatment and Sugar Yields as a Function of Biomass Particle Size}, author={Michael J. Dougherty and Huu Dau Marie Elise Tran and Vitalie Stavila and Bernhard Knierim and Anthe George and Manfred Auer and Paul D. Adams and Masood Z. Hadi}, booktitle={PloS one}, year={2014} }