Influence of torrefaction pretreatment on corncobs: A study on fundamental characteristics, thermal behavior, and kinetic

Xiaojie Tian; Leilei Dai; Yunpu Wang; Zihong Zeng; Shumei Zhang; Lin Jiang; Xiuhua Yang; Linqing Yue; Yuhuan Liu; Roger Ruan

doi:10.1016/j.biortech.2019.122490

Influence of torrefaction pretreatment on corncobs: A study on fundamental characteristics, thermal behavior, and kinetic

Xiaojie Tian, Leilei Dai, Yunpu Wang, Zihong Zeng, Shumei Zhang, Lin Jiang, Xiuhua Yang, Linqing Yue, Yuhuan Liu, Roger Ruan

Bioproducts and Biosystems Engineering

Research output: Contribution to journal › Article › peer-review

62 Scopus citations

Abstract

The effects of torrefaction pretreatment on corncobs properties and its pyrolysis kinetic parameters were investigated in this study. Proximate and ultimate analyses indicated that torrefaction increased the H/C_eff ratio and higher heating value of corncobs, and reduced its oxygen content. Although the mass yield was also reduced, the corresponding energy yield was relatively higher. The crystallinity index of biomass showed a first upward and then downward trend with the torrefaction temperature. Kinetic parameters obtained from three models indicated that both the activation energy and the pre-exponential factor increased with the elevated torrefaction temperature and it's better to calculate the activation energy by the OFW method and to use the KAS and DAEM methods to calculate the pre-exponential factor. In addition, it was found that the optimum pretreatment temperature of corncobs was 240 °C.

Original language	English (US)
Article number	122490
Journal	Bioresource Technology
Volume	297
DOIs	https://doi.org/10.1016/j.biortech.2019.122490
State	Published - Feb 2020

Bibliographical note

Funding Information:
This project is financially supported by the National Natural Science Foundation of China (No. 21766019), Natural Science Foundation of Jiangxi Province, China (20181BAB206030), Key Research and Development Program of Jiangxi Province, China (20171BBF60023), Innovation Fund for Graduate of Jiangxi Province, China (YC2019-B005), Science and Technology Program of Guangzhou, China (Grant No. 201904010342).

Funding Information:
This project is financially supported by the National Natural Science Foundation of China (No. 21766019 ), Natural Science Foundation of Jiangxi Province , China ( 20181BAB206030 ), Key Research and Development Program of Jiangxi Province , China ( 20171BBF60023 ), Innovation Fund for Graduate of Jiangxi Province, China ( YC2019-B005 ), Science and Technology Program of Guangzhou, China (Grant No. 201904010342 ). Appendix A

Publisher Copyright:
© 2019 Elsevier Ltd

Keywords

Kinetics
Structure analysis
Thermogravimetry
Torrefaction

PubMed: MeSH publication types

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10.1016/j.biortech.2019.122490

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title = "Influence of torrefaction pretreatment on corncobs: A study on fundamental characteristics, thermal behavior, and kinetic",

abstract = "The effects of torrefaction pretreatment on corncobs properties and its pyrolysis kinetic parameters were investigated in this study. Proximate and ultimate analyses indicated that torrefaction increased the H/Ceff ratio and higher heating value of corncobs, and reduced its oxygen content. Although the mass yield was also reduced, the corresponding energy yield was relatively higher. The crystallinity index of biomass showed a first upward and then downward trend with the torrefaction temperature. Kinetic parameters obtained from three models indicated that both the activation energy and the pre-exponential factor increased with the elevated torrefaction temperature and it's better to calculate the activation energy by the OFW method and to use the KAS and DAEM methods to calculate the pre-exponential factor. In addition, it was found that the optimum pretreatment temperature of corncobs was 240 °C.",

keywords = "Kinetics, Structure analysis, Thermogravimetry, Torrefaction",

author = "Xiaojie Tian and Leilei Dai and Yunpu Wang and Zihong Zeng and Shumei Zhang and Lin Jiang and Xiuhua Yang and Linqing Yue and Yuhuan Liu and Roger Ruan",

note = "Funding Information: This project is financially supported by the National Natural Science Foundation of China (No. 21766019), Natural Science Foundation of Jiangxi Province, China (20181BAB206030), Key Research and Development Program of Jiangxi Province, China (20171BBF60023), Innovation Fund for Graduate of Jiangxi Province, China (YC2019-B005), Science and Technology Program of Guangzhou, China (Grant No. 201904010342). Funding Information: This project is financially supported by the National Natural Science Foundation of China (No. 21766019 ), Natural Science Foundation of Jiangxi Province , China ( 20181BAB206030 ), Key Research and Development Program of Jiangxi Province , China ( 20171BBF60023 ), Innovation Fund for Graduate of Jiangxi Province, China ( YC2019-B005 ), Science and Technology Program of Guangzhou, China (Grant No. 201904010342 ). Appendix A Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

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AU - Tian, Xiaojie

AU - Dai, Leilei

AU - Wang, Yunpu

AU - Zeng, Zihong

AU - Zhang, Shumei

AU - Jiang, Lin

AU - Yang, Xiuhua

AU - Yue, Linqing

AU - Liu, Yuhuan

AU - Ruan, Roger

N1 - Funding Information: This project is financially supported by the National Natural Science Foundation of China (No. 21766019), Natural Science Foundation of Jiangxi Province, China (20181BAB206030), Key Research and Development Program of Jiangxi Province, China (20171BBF60023), Innovation Fund for Graduate of Jiangxi Province, China (YC2019-B005), Science and Technology Program of Guangzhou, China (Grant No. 201904010342). Funding Information: This project is financially supported by the National Natural Science Foundation of China (No. 21766019 ), Natural Science Foundation of Jiangxi Province , China ( 20181BAB206030 ), Key Research and Development Program of Jiangxi Province , China ( 20171BBF60023 ), Innovation Fund for Graduate of Jiangxi Province, China ( YC2019-B005 ), Science and Technology Program of Guangzhou, China (Grant No. 201904010342 ). Appendix A Publisher Copyright: © 2019 Elsevier Ltd

PY - 2020/2

Y1 - 2020/2

N2 - The effects of torrefaction pretreatment on corncobs properties and its pyrolysis kinetic parameters were investigated in this study. Proximate and ultimate analyses indicated that torrefaction increased the H/Ceff ratio and higher heating value of corncobs, and reduced its oxygen content. Although the mass yield was also reduced, the corresponding energy yield was relatively higher. The crystallinity index of biomass showed a first upward and then downward trend with the torrefaction temperature. Kinetic parameters obtained from three models indicated that both the activation energy and the pre-exponential factor increased with the elevated torrefaction temperature and it's better to calculate the activation energy by the OFW method and to use the KAS and DAEM methods to calculate the pre-exponential factor. In addition, it was found that the optimum pretreatment temperature of corncobs was 240 °C.

AB - The effects of torrefaction pretreatment on corncobs properties and its pyrolysis kinetic parameters were investigated in this study. Proximate and ultimate analyses indicated that torrefaction increased the H/Ceff ratio and higher heating value of corncobs, and reduced its oxygen content. Although the mass yield was also reduced, the corresponding energy yield was relatively higher. The crystallinity index of biomass showed a first upward and then downward trend with the torrefaction temperature. Kinetic parameters obtained from three models indicated that both the activation energy and the pre-exponential factor increased with the elevated torrefaction temperature and it's better to calculate the activation energy by the OFW method and to use the KAS and DAEM methods to calculate the pre-exponential factor. In addition, it was found that the optimum pretreatment temperature of corncobs was 240 °C.

KW - Kinetics

KW - Structure analysis

KW - Thermogravimetry

KW - Torrefaction

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Influence of torrefaction pretreatment on corncobs: A study on fundamental characteristics, thermal behavior, and kinetic

Abstract

Bibliographical note

Keywords

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UN SDGs

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