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Enhanced Rate of Enzymatic Saccharification with the Ionic Liquid Treatment of Corn Straw Activated by Metal Ion Solution

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  • Guoming Zeng

    (School of Architecture and Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
    Intelligent Construction Technology Application Service Center of Chongqing City Vocational College, Chongqing 402160, China)

  • Xuanhao Fan

    (School of Architecture and Engineering, Chongqing University of Science and Technology, Chongqing 401331, China)

  • Fei Wang

    (School of Architecture and Engineering, Chongqing University of Science and Technology, Chongqing 401331, China)

  • Yang Luo

    (School of Architecture and Engineering, Chongqing University of Science and Technology, Chongqing 401331, China)

  • Dong Liang

    (School of Architecture and Engineering, Chongqing University of Science and Technology, Chongqing 401331, China)

  • Yongguang Han

    (Intelligent Construction Technology Application Service Center of Chongqing City Vocational College, Chongqing 402160, China)

  • Pei Gao

    (School of Architecture and Engineering, Chongqing University of Science and Technology, Chongqing 401331, China)

  • Quanfeng Wang

    (School of Architecture and Engineering, Chongqing University of Science and Technology, Chongqing 401331, China)

  • Jiale Wang

    (School of Architecture and Engineering, Chongqing University of Science and Technology, Chongqing 401331, China)

  • Chunyi Yu

    (Department of Construction Management and Real Estate, Chongqing Jianzhu College, Chongqing 400072, China)

  • Libo Jin

    (Institute of Life Science & Biomedical Collaborative Innovation Center of Zhejiang Province, Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, National & Local Joint Engineering Research Center for Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou 325035, China)

  • Da Sun

    (Institute of Life Science & Biomedical Collaborative Innovation Center of Zhejiang Province, Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, National & Local Joint Engineering Research Center for Ecological Treatment Technology of Urban Water Pollution, Wenzhou University, Wenzhou 325035, China)

Abstract

The aim of this paper was to effectively reduce environmental pollution and further improve the enzymatic hydrolysis rate of corn straw. Thus, a pretreatment method for activating cellulose by using ionic liquid to treat metal ion solution was developed. By investigating the effects of the three factors of substrate mass fraction, reaction temperature, and reaction time, and the interaction between the factors on the pretreatment effect, the response surface design method was used to optimize the conditions of ionic liquid (1-butyl-3-methylimidazolium chloride) treatment of corn straw after activation, and the physicochemical structure and enzymatic hydrolysis efficiency before and after treatment were compared and analyzed. The experimental results showed that the yield of reducing sugar was increased by 157.85% and 150.41%, respectively, compared with the untreated corn straw. The analysis of chemical composition and structure showed that the cellulose content of the material increased significantly by 68.11% and 60.54%, respectively, after ionic liquid treatment. The results of the scanning electron microscope (SEM) observation and X-ray diffraction (XRD) showed that the relative crystallinity of the material decreased after ionic liquid treatment, which was more conducive to the enzymatic hydrolysis of cellulose.

Suggested Citation

  • Guoming Zeng & Xuanhao Fan & Fei Wang & Yang Luo & Dong Liang & Yongguang Han & Pei Gao & Quanfeng Wang & Jiale Wang & Chunyi Yu & Libo Jin & Da Sun, 2023. "Enhanced Rate of Enzymatic Saccharification with the Ionic Liquid Treatment of Corn Straw Activated by Metal Ion Solution," Sustainability, MDPI, vol. 15(1), pages 1-12, January.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:1:p:834-:d:1023292
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    References listed on IDEAS

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    1. Xie, Junxian & Cheng, Zheng & Zhu, Shiyun & Xu, Jun, 2022. "Lewis base enhanced neutral deep eutectic solvent pretreatment for enzymatic hydrolysis of corn straw and lignin characterization," Renewable Energy, Elsevier, vol. 188(C), pages 320-328.
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