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Effect of ethanol organosolv pretreatment factors on enzymatic digestibility and ethanol organosolv lignin structure from Liriodendron tulipifera in specific combined severity factors

Author

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  • Jang, Soo-Kyeong
  • Kim, Ho-Yong
  • Jeong, Han-Seob
  • Kim, Jae-Young
  • Yeo, Hwanmyeong
  • Choi, In-Gyu

Abstract

In this study, various ethanol organosolv pretreatment factors including reaction temperature, time, and concentration of acid catalyst were evaluated for effective decomposition of lignocellulosic biomass. The different pretreatment conditions had the same combined severity factor (1.16). With an increase in reaction temperature and pH, the water-insoluble residue recovery and amount of lignin in the solid residue decreased from 52.6% to 42.4% and from 10.4% to 5.5%, respectively, whereas enzymatic digestibility increased up to 97.9%. After pretreatment, ethanol organosolv lignin (EOL) recovered from the liquid hydrolyzate was subjected to nitrobenzene oxidation, gel permeation chromatography, and supercritical ethanol treatment for evaluation of the lignin structural properties. At a higher reaction temperature and pH, the proportion of ether linkages and the polydispersity of EOL decreased from 15.7% to 10.9% and from 3.1 to 1.9, respectively, while the amount of phenolic monomers ranged from 16.7 mg/g to 27.9 mg/g.

Suggested Citation

  • Jang, Soo-Kyeong & Kim, Ho-Yong & Jeong, Han-Seob & Kim, Jae-Young & Yeo, Hwanmyeong & Choi, In-Gyu, 2016. "Effect of ethanol organosolv pretreatment factors on enzymatic digestibility and ethanol organosolv lignin structure from Liriodendron tulipifera in specific combined severity factors," Renewable Energy, Elsevier, vol. 87(P1), pages 599-606.
    • Handle: RePEc:eee:renene:v:87:y:2016:i:p1:p:599-606
    DOI: 10.1016/j.renene.2015.10.045
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    Cited by:

    1. Jomnonkhaow, Umarin & Sittijunda, Sureewan & Reungsang, Alissara, 2022. "Assessment of organosolv, hydrothermal, and combined organosolv and hydrothermal with enzymatic pretreatment to increase the production of biogas from Napier grass and Napier silage," Renewable Energy, Elsevier, vol. 181(C), pages 1237-1249.
    2. Choi, June-Ho & Jang, Soo-Kyeong & Kim, Jong-Hwa & Park, Se-Yeong & Kim, Jong-Chan & Jeong, Hanseob & Kim, Ho-Yong & Choi, In-Gyu, 2019. "Simultaneous production of glucose, furfural, and ethanol organosolv lignin for total utilization of high recalcitrant biomass by organosolv pretreatment," Renewable Energy, Elsevier, vol. 130(C), pages 952-960.
    3. Tsegaye, Bahiru & Balomajumder, Chandrajit & Roy, Partha, 2020. "Organosolv pretreatments of rice straw followed by microbial hydrolysis for efficient biofuel production," Renewable Energy, Elsevier, vol. 148(C), pages 923-934.
    4. Júnia Alves-Ferreira & Ana Lourenço & Francisca Morgado & Luís C. Duarte & Luísa B. Roseiro & Maria C. Fernandes & Helena Pereira & Florbela Carvalheiro, 2021. "Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes," Energies, MDPI, vol. 14(4), pages 1-21, February.

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