4.8 Article

Effect of steam explosion on waste copier paper alone and in a mixed lignocellulosic substrate on saccharification and fermentation

Journal

BIORESOURCE TECHNOLOGY
Volume 187, Issue -, Pages 136-143

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.03.089

Keywords

Steam explosion; Enzyme saccharification; Fermentation; SSF; Cellulosic biomass

Funding

  1. UK Biotechnology and Biological Sciences Research Council
  2. Institute Strategic Programme 'Food and Health' [BB/J004545/1]
  3. BBSRC [BBS/E/F/00044440, BBS/E/F/00044476] Funding Source: UKRI
  4. Biotechnology and Biological Sciences Research Council [BBS/E/F/00044476, BBS/E/F/00044440] Funding Source: researchfish

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This study evaluated steam (SE) explosion on the saccharification and simultaneous saccharification and fermentation (SSF) of waste copier paper. SE resulted in a colouration, a reduction in fibre thickness and increased water absorption. Changes in chemical composition were evident at severities greater than 4.24 resulting in a loss of xylose and the production of breakdown products known to inhibit fermentation (particularly formic acid and acetic acid). SE did not improve final yields of glucose or ethanol, and at severities 4.53 and 4.83 reduced yields probably due to the effect of breakdown products and fermentation inhibitors. However, at moderate severities of 3.6 and 3.9 there was an increase in initial rates of hydrolysis which may provide a basis for reducing processing times. Co-steam explosion of waste copier paper and wheat straw attenuated the production of breakdown products, and may also provide a basis for improving SSF of lignocellulose. (C) 2015 The Authors. Published by Elsevier Ltd.

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