Pretreatment of Miscanthus giganteus with Lime and Oxidants for Biofuels

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

doi:10.1021/ef502517d

Title: Pretreatment of Miscanthus giganteus with Lime and Oxidants for Biofuels

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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. Furthermore, 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.

Authors:

Yang, Fuxin ^[1]; Liu, Zhongguo ^[2]; Afzal, Waheed ^[3]; Liu, Zhigang ^[4]; Bell, Alexis T. ^[2]; Prausnitz, John M. ^[2]

Univ. of California, Berkeley, CA (United States). Energy Biosciences Inst. and Dept. of Chemical and Biomolecular Engineering; Xi'an Jiaotong Univ., Xi'an, Shaanxi (China). Key Lab. of Thermo-Fluid Science and Engineering
Univ. of California, Berkeley, CA (United States). Energy Biosciences Inst. and Dept. of Chemical and Biomolecular Engineering
Univ. of California, Berkeley, CA (United States). Energy Biosciences Inst. and Dept. of Chemical and Biomolecular Engineering; Univ. of Aberdeen, Aberdeen (United Kingdom). School of Engineering; Univ. of the Punjab, Lahore (Pakistan). Inst. of Chemical Engineering & Technology
Xi'an Jiaotong Univ., Xi'an, Shaanxi (China). Key Lab. of Thermo-Fluid Science and Engineering

Publication Date:: Tue Feb 10 00:00:00 EST 2015

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1571030

Alternate Identifier(s):: OSTI ID: 1571039

Grant/Contract Number:: AC02-05CH11231

Resource Type:: Accepted Manuscript

Journal Name:: Energy and Fuels

Additional Journal Information:: Journal Volume: 29; Journal Issue: 3; Journal ID: ISSN 0887-0624

Publisher:: American Chemical Society (ACS)

Country of Publication:: United States

Language:: English

Subject:: 09 BIOMASS FUELS

Citation Formats


                    Yang, Fuxin, Liu, Zhongguo, Afzal, Waheed, Liu, Zhigang, Bell, Alexis T., and Prausnitz, John M. Pretreatment of Miscanthus giganteus with Lime and Oxidants for Biofuels.  United States: N. p., 2015. 
Web.  doi:10.1021/ef502517d.

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                    Yang, Fuxin, Liu, Zhongguo, Afzal, Waheed, Liu, Zhigang, Bell, Alexis T., & Prausnitz, John M. Pretreatment of Miscanthus giganteus with Lime and Oxidants for Biofuels.  United States.  https://doi.org/10.1021/ef502517d

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                    Yang, Fuxin, Liu, Zhongguo, Afzal, Waheed, Liu, Zhigang, Bell, Alexis T., and Prausnitz, John M. Tue .  
"Pretreatment of Miscanthus giganteus with Lime and Oxidants for Biofuels".  United States.  https://doi.org/10.1021/ef502517d.  https://www.osti.gov/servlets/purl/1571030.

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@article{osti_1571030,

  title        = {Pretreatment of Miscanthus giganteus with Lime and Oxidants for Biofuels},

  author       = {Yang, Fuxin and Liu, Zhongguo and Afzal, Waheed and Liu, Zhigang and Bell, Alexis T. and Prausnitz, John M.},

  abstractNote = {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. Furthermore, 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.},

  doi          = {10.1021/ef502517d},

  journal      = {Energy and Fuels},

  number       = 3,

  volume       = 29,

  place        = {United States},

  year         = {Tue Feb 10 00:00:00 EST 2015},

  month        = {Tue Feb 10 00:00:00 EST 2015}

}

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