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Optimization of alkali pretreatment of wheat straw to be used as substrate for biofuels production

Author

Listed:
  • K. Jaisamut

    (Department of Biotechnology, Institute of Chemical Technology Prague, Prague, Czech Republic)

  • L. Paulová

    (Department of Biotechnology, Institute of Chemical Technology Prague, Prague, Czech Republic)

  • P. Patáková

    (Department of Biotechnology, Institute of Chemical Technology Prague, Prague, Czech Republic)

  • M. Rychtera

    (Department of Biotechnology, Institute of Chemical Technology Prague, Prague, Czech Republic)

  • K. Melzoch

    (Department of Biotechnology, Institute of Chemical Technology Prague, Prague, Czech Republic)

Abstract

Alkali pretreatment of wheat straw was optimized by response surface methodology to maximize yields of fermentable sugars in subsequent enzymatic hydrolysis and to remove maximum lignin in order to improve rheological attributes of the media. The effects of pretreatment conditions on biomass properties were studied using the Expert Designer software. Concentration of sodium hydroxide and temperature were the factors most affecting pretreatment efficiency. At the optimum (80°C, 39 min, 0.18 g NaOH and 0.06 g lime per g of raw biomass), 93.1 ± 1.0% conversion of cellulose to glucose after enzymatic hydrolysis and 80.3 ± 1.2% yield of monosaccharides (glucose plus xylose and arabinose) from cellulose and hemicellulose of wheat straw were achieved.

Suggested Citation

  • K. Jaisamut & L. Paulová & P. Patáková & M. Rychtera & K. Melzoch, 2013. "Optimization of alkali pretreatment of wheat straw to be used as substrate for biofuels production," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 59(12), pages 537-542.
    • Handle: RePEc:caa:jnlpse:v:59:y:2013:i:12:id:7129-pse
    DOI: 10.17221/7129-PSE
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    Cited by:

    1. Lucia GHARWALOVÁ & Leona PAULOVÁ & Petra PATÁKOVÁ & Barbora BRANSKÁ & Karel MELZOCH, 2018. "Use of wheat straw and chicken feather hydrolysates as a complete medium for lactic acid production," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 36(2), pages 146-153.

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