Pretreatment of Miscanthus giganteus with Lime and Oxidants for Biofuels

Fuxin Yang, Zhongguo Liu, Waheed Afzal, Alexis T Bell, John M Prausnitz

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6 Citations (Scopus)
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Abstract

To make biomass more accessible for enzymatic hydrolysis, lime pretreatment of Miscanthus giganteus with oxidants was explored from 100 to 150 °C. Composition data for the recovered solid were obtained to determine the effects of the reaction time, lime dosage, oxidant loading, and temperature on sugar production efficiency. Under selected conditions (0.2 g of lime/g of biomass, 200 psig O2, and 150 °C for 1 h), delignification was 64.7%. The pretreated biomass was then followed by enzymatic hydrolysis. The yield of cellulose in the recovered solid to glucose was 91.7% and hemicellulose to xylose was 67.3%, 7.1 and 18.2 times larger than those obtained from raw biomass, respectively. Pretreatment with oxidants substantially raised delignification of raw M. giganteus, thereby enhancing enzymatic hydrolysis to sugars, while results were not improved when pretreatment included ammonium molybdate.
Original languageEnglish
Pages (from-to)1743-1750
Number of pages8
JournalEnergy & Fuels
Volume29
Issue number3
Early online date10 Feb 2015
DOIs
Publication statusPublished - 2015

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    Yang, F., Liu, Z., Afzal, W., Bell, A. T., & Prausnitz, J. M. (2015). Pretreatment of Miscanthus giganteus with Lime and Oxidants for Biofuels. Energy & Fuels, 29(3), 1743-1750. https://doi.org/10.1021/ef502517d