Optimization of microwave pretreatment on wheat straw for ethanol production

Jian Xu, Hongzhang Chen, Zsófia Kádár, Anne Belinda Thomsen, Jens Ejbye Schmidt, H. Peng

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    An orthogonal design (L9(34)) was used to optimize the microwave pretreatment on wheat straw for ethanol production. The orthogonal analysis was done based on the results obtained from the nine pretreatments. The effect of four factors including the ratio of biomass to NaOH solution, pretreatment time, microwave power, and the concentration of NaOH solution with three different levels on the chemical composition, cellulose/hemicellulose recoveries and ethanol concentration was investigated. According to the orthogonal analysis, pretreatment with the ratio of biomass to liquid at 80 g kg−1, the NaOH concentration of 10 kg m−3, the microwave power of 1000 W for 15 min was confirmed to be the optimal condition. The ethanol yield was 148.93 g kg−1 wheat straw at this condition, much higher than that from the untreated material which was only 26.78 g kg−1.
    Original languageEnglish
    JournalBiomass & Bioenergy
    Volume35
    Issue number9
    Pages (from-to)3859-3864
    ISSN0961-9534
    DOIs
    Publication statusPublished - 2011

    Keywords

    • Bio refinery

    Cite this

    Xu, J., Chen, H., Kádár, Z., Thomsen, A. B., Schmidt, J. E., & Peng, H. (2011). Optimization of microwave pretreatment on wheat straw for ethanol production. Biomass & Bioenergy, 35(9), 3859-3864. https://doi.org/10.1016/j.biombioe.2011.04.054