Pretreatment of reed by wet oxidation and subsequent utilization of the pretreated fibers for ethanol production

Nóra Szijártó, Zsófia Kádár, Eniko Varga, Anne Belinda Thomsen, Maria Costa-Ferreira, K. Réczey

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Common reed (Phragmites australis) is often recognized as a promising source of renewable energy. However, it is among the least characterized crops from the bioethanol perspective. Although one third of reed dry matter is cellulose, without pretreatment, it resists enzymatic hydrolysis like lignocelluloses usually do. In the present study, wet oxidation was investigated as the pretreatment method to enhance the enzymatic digestibility of reed cellulose to soluble sugars and thus improve the convertibility of reed to ethanol. The most effective treatment increased the digestibility of reed cellulose by cellulases more than three times compared to the untreated control. During this wet oxidation, 51.7% of the hemicellulose and 58.3% of the lignin were solubilized, whereas 87.1% of the cellulose remained in the solids. After enzymatic hydrolysis of pretreated fibers from the same treatment, the conversion of cellulose to glucose was 82.4%. Simultaneous saccharification and fermentation of pretreated solids resulted in a final ethanol concentration as high as 8.7 g/L, yielding 73% of the theoretical.

Original languageEnglish
Pages (from-to)386-396
Number of pages11
JournalApplied Biochemistry and Biotechnology - Part A Enzyme Engineering and Biotechnology
Volume155
Issue number1-3
DOIs
Publication statusPublished - May 2009

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Cellulose
Ethanol
Oxidation
Fibers
Enzymatic hydrolysis
Hydrolysis
Renewable Energy
Cellulases
Saccharification
Bioethanol
Lignin
Sugars
Fermentation
Crops
Glucose

Keywords

  • Ethanol
  • Fermentation
  • Lignocellulose
  • Phragmites australis
  • Pretreatment
  • SSF
  • Wet oxidation

ASJC Scopus subject areas

  • Biochemistry
  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology
  • Molecular Biology
  • Environmental Engineering

Cite this

Pretreatment of reed by wet oxidation and subsequent utilization of the pretreated fibers for ethanol production. / Szijártó, Nóra; Kádár, Zsófia; Varga, Eniko; Thomsen, Anne Belinda; Costa-Ferreira, Maria; Réczey, K.

In: Applied Biochemistry and Biotechnology - Part A Enzyme Engineering and Biotechnology, Vol. 155, No. 1-3, 05.2009, p. 386-396.

Research output: Contribution to journalArticle

Szijártó, Nóra ; Kádár, Zsófia ; Varga, Eniko ; Thomsen, Anne Belinda ; Costa-Ferreira, Maria ; Réczey, K. / Pretreatment of reed by wet oxidation and subsequent utilization of the pretreated fibers for ethanol production. In: Applied Biochemistry and Biotechnology - Part A Enzyme Engineering and Biotechnology. 2009 ; Vol. 155, No. 1-3. pp. 386-396.
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