Hydrolysis and composition of recovered fibres fractionated from solid recovered fuel

Research output: Contribution to journalArticleScientificpeer-review


  • K. Kemppainen
  • M. Siika-aho
  • A. Östman
  • E. Sipilä
  • T. Puranen
  • N. von Weymarn
  • K. Kruus

Research units

  • VTT Technical Research Centre of Finland
  • Skandinavisk Kemiinformation AB
  • Pöyry Management Consulting Oy
  • Roal Oy


Fibres fractionated from solid recovered fuel (SRF), a standardised market combustion fuel produced from sorted waste, were considered as a source of lignocellulosic fermentable sugars. The fibre yield from four samples of SRF was 25-45%, and the separated material consisted of 52-54% carbohydrates, mainly glucan, with a high content of ash (12-17%). The enzymatic digestibility of recovered fibres was studied at low and high solids loading and compared with model substrates containing only chemical and mechanical pulps. Above 80% hydrolysis yield was reached at 20% solids loading in 48. h, but variation was observed between different samples of recovered fibres. Surfactants were found to improve the hydrolysis yield of recovered fibres especially in tumbling-type of mixing at low solids loading, where hydrolysis was found to stagnate without surfactants. The results suggest that SRF is a potential source of easily digestible lignocellulosic carbohydrates for use in biorefineries.


Original languageEnglish
Pages (from-to)88-95
Number of pages8
JournalBioresource Technology
Publication statusPublished - 1 Jan 2014
MoE publication typeA1 Journal article-refereed

    Research areas

  • Enzymatic hydrolysis, High solids loading, Recovered fibres, Solid recovered fuel, Surfactants

ID: 32868266