Directional valorization of eucalyptus waste into value-added chemicals by a novel two-staged controllable pyrolysis process

doi:10.1016/j.cej.2020.127045

	Directional valorization of eucalyptus waste into value-added chemicals by a novel two-staged controllable pyrolysis process
	Zheng, Anqing 1,2,5,6; Xia, Shengpeng 1,2,3,6; Cao, Fengzhu 1,2,4,6; Liu, Shijun 1,2,6; Yang, Xingwei 1,2,6; Zhao, Zengli 1,2,6; Tian, Yuanyu 5; Li, Haibin 1,2,6
刊名	CHEMICAL ENGINEERING JOURNAL
	2021-01-15
卷号	404 页码:11
关键词	Biomass waste Torrefaction Fast pyrolysis Two-staged pyrolysis Directional valorization Pretreatment
ISSN号	1385-8947
DOI	10.1016/j.cej.2020.127045
通讯作者	Zhao, Zengli(zhaozl@ms.giec.ac.cn) ; Tian, Yuanyu(tianyy1008@126.com)
英文摘要	Fast pyrolysis is a promising way to convert biomass waste into value-added chemicals, but current approaches give poor yield and selectivity for the desired chemicals (e.g. anhydrosugars). This study reported a novel two-staged controllable pyrolysis process consisting of torrefaction of H2SO4-impregnated eucalyptus waste and subsequent fast pyrolysis for achieving directional valorization of eucalyptus waste. Under different torrefaction temperature and holding time, the performance of two-staged controllable pyrolysis of 0.5%H2SO4-impregnated eucalyptus waste was evaluated. The highest total yield of levoglucosan (82.4%, based on cellulose) was obtained by torrefaction at 300 degrees C with a holding time of 240 s followed by fast pyrolysis at 550 degrees C, while the highest total yield of xylosan (17.0%, based on hemicellulose) was obtained from torrefaction at 280 degrees C with a holding time of 20 s combined with subsequent fast pyrolysis at 550 degrees C. It is demonstrated that H2SO4 impregnation can achieve the directional valorization of holocellulose into anhydrosugars during torrefaction at low temperature, while evidently inhibiting the degradation of lignin and the formation of non-condensable gas and Cl-C4 light oxygenates. The unreacted holocellulose and lignin in torrefied eucalyptus waste can be further converted into anhydmsugars and phenols via subsequent fast pyrolysis. This study provides a very simple and efficient strategy to achieve staged and directional valorization of holocellulose and lignin in biomass waste into value-added chemicals.
资助项目	National Key R&D Program of China[2017YFE0124200] ; National Natural Science Foundation of China[51776209] ; National Natural Science Foundation of China[51876208] ; National Natural Science Foundation of China[51661145011] ; Science and Technology Planning Project of Guangdong Province[2015A020215024] ; Youth Innovation Promotion Association, CAS[2018383] ; Pearl River S&T Nova Program of Guangzhou[201806010061]
WOS关键词	CATALYTIC FAST PYROLYSIS ; LIGNOCELLULOSIC BIOMASS ; PRODUCT DISTRIBUTION ; CELLULOSE PYROLYSIS ; LIQUID PRODUCTS ; BIO-OILS ; LEVOGLUCOSAN ; TORREFACTION ; HEMICELLULOSE ; YIELD
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000607583700006
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Science and Technology Planning Project of Guangdong Province ; Youth Innovation Promotion Association, CAS ; Pearl River S&T Nova Program of Guangzhou
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/32534]
专题	中国科学院广州能源研究所
通讯作者	Zhao, Zengli; Tian, Yuanyu
作者单位	1.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Sci & Technol China, Nano Sci & Technol Inst, Suzhou 215123, Peoples R China 5.China Univ Petr East China, State Key Lab Heavy Oil Proc, Qingdao 266580, Shandong, Peoples R China 6.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Anqing,Xia, Shengpeng,Cao, Fengzhu,et al. Directional valorization of eucalyptus waste into value-added chemicals by a novel two-staged controllable pyrolysis process[J]. CHEMICAL ENGINEERING JOURNAL,2021,404:11.
APA	Zheng, Anqing.,Xia, Shengpeng.,Cao, Fengzhu.,Liu, Shijun.,Yang, Xingwei.,...&Li, Haibin.(2021).Directional valorization of eucalyptus waste into value-added chemicals by a novel two-staged controllable pyrolysis process.CHEMICAL ENGINEERING JOURNAL,404,11.
MLA	Zheng, Anqing,et al."Directional valorization of eucalyptus waste into value-added chemicals by a novel two-staged controllable pyrolysis process".CHEMICAL ENGINEERING JOURNAL 404(2021):11.