Recalcitrance Assessment of the Agro-industrial Residues from Five Agave Species [electronic resource] : Ionic Liquid Pretreatment, Saccharification and Structural Characterization

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Tác giả:

Ngôn ngữ: eng

Ký hiệu phân loại: 668.5 Perfumes and cosmetics

Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Science ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2018

Mô tả vật lý: Size: p. 551-561 : , digital, PDF file.

Bộ sưu tập: Metadata

ID: 263006

 <
 em>
 Agave<
 /em>
  has recently shown its potential as a bioenergy feedstock with promising features such as higher biomass productivity than leading bioenergy feedstock while at the same time being drought-resistant with low water requirements and high sugar to ethanol conversion using ionic liquid (IL) pretreatment. Here, IL pretreatment was studied to develop the first direct side-by-side comparative recalcitrance assessment of the agro-industrial residues from five Agave species [<
 em>
 Agave americana<
 /em>
  (AME), <
 em>
 A. angustifolia<
 /em>
  (ANG), <
 em>
 A. fourcroydes<
 /em>
  (FOU), <
 em>
 A. salmiana<
 /em>
  (SAL), and <
 em>
 A. tequilana<
 /em>
  (TEQ)] using compositional analysis, X-ray diffraction, and the lignin syringyl/guaiacyl subunit ratio (S/G) by pyrolysis molecular beam mass spectrometry (PyMBMS). Prominent calcium oxalate peaks were found only in unpretreated AME, SAL, and TEQ. The S/G ratios of all five unpretreated <
 em>
 Agave<
 /em>
  species were between 1.27 and 1.57 while the IL-pretreated samples were from 1.39 to 1.72. The highest overall sugar production was obtained with IL-pretreated FOU with 492 mg glucose/g biomass and 157 mg xylose/g biomass at 120�C and 3 h using 1-ethyl-3-methylimidazolium acetate ([C<
 sub>
 2<
 /sub>
 C<
 sub>
 1<
 /sub>
 Im][OAc]). An estimated theoretical ethanol yield from the studied agro-industrial residues from the five <
 em>
 Agave<
 /em>
  species was in the range of 1060 to 5800 L ethanol/ha/year. These comparison results demonstrate the potential of the <
 em>
 Agave<
 /em>
  spp. as a suitable biofuel feedstock which can be employed within a biorefinery scheme.
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