Effects of thermo-chemical pre-treatment on anaerobic biodegradability and hydrolysis of lignocellulosic biomass

T. Fernandes, G.J. Klaasse Bos, G. Zeeman, J.P.M. Sanders, J.B. van Lier

Research output: Contribution to journalArticleAcademicpeer-review

121 Citations (Scopus)

Abstract

The effects of different thermo-chemical pre-treatment methods were determined on the biodegradability and hydrolysis rate of lignocellulosic biomass. Three plant species, hay, straw and bracken were thermo-chemically pre-treated with calcium hydroxide, ammonium carbonate and maleic acid. After pre-treatment, the plant material was anaerobically digested in batch bottles under mesophilic conditions for 40 days. From the pre-treatment and subsequent anaerobic digestion experiments, it was concluded that when the lignin content of the plant material is high, thermo-chemical pre-treatments have a positive effect on the biodegradability of the substrate. Calcium hydroxide pre-treatment improves the biodegradability of lignocellulosic biomass, especially for high lignin content substrates, like bracken. Maleic acid generates the highest percentage of dissolved COD during pre-treatment. Ammonium pre-treatment only showed a clear effect on biodegradability for straw.
Original languageEnglish
Pages (from-to)2575-2579
JournalBioresource Technology
Volume100
Issue number9
DOIs
Publication statusPublished - 2009

Keywords

  • corn stover
  • enzymatic-hydrolysis
  • wheat-straw
  • technologies
  • switchgrass
  • manure
  • acid

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