Components and Persistent Free Radicals in the Volatiles during Pyrolysis of Lignocellulose Biomass

doi:10.1021/acs.est.0c03363

	Components and Persistent Free Radicals in the Volatiles during Pyrolysis of Lignocellulose Biomass
	Tao, Wenmei 4; Yang, Xingwei 3; Li, Yan 4; Zhu, Ruizhi 2; Si, Xiaoxi 2; Pan, Bo 4; Xing, Baoshan 1
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2020-10-20
卷号	54 期号:20 页码:13274-13281
ISSN号	0013-936X
DOI	10.1021/acs.est.0c03363
通讯作者	Pan, Bo(panbocai@gmail.com)
英文摘要	Persistent free radicals (PFRs) may cause negative impacts to human health and the environment because of the induced reactive oxygen species. We expect that PFRs could be generated in the condensable volatiles formed during lignocellulose biomass pyrolysis. Elucidating the structural origin and the formation mechanism of PFRs is important for an in-depth understanding of air pollutants from the pyrolysis or combustion of lignocellulose biomass. This work selected rice straw and pine sawdust to represent agricultural and forest biomass residues. The pyrolysis mechanism, volatile components, and PFR generation were discussed based on the analysis of thermogravimetry-Fourier transform infrared spectroscopy-mass spectrometry (MS), pyrolysis-gas chromatography/MS, and electron spin resonance (ESR). Levoglucosan, furans, and 2-methoxyphenols were the main pyrolytic compounds for cellulose (CL), hemicellulose (HC), and lignin (LG), respectively. Obvious ESR signals were detected in the condensable volatiles of LG, while no ESR signals were detected for those of CL and HC. Higher ESR signals were detected in lignocellulose with a higher content of LG. Therefore, LG was the main structural basis to generate PFRs in lignocellulose condensable volatiles, mostly attributed to the methoxyphenol components. This study provides useful information regarding the generation mechanisms of and the structures related to PFRs, which is essential to understand the risks of lignocellulose pyrolytic volatiles.
资助项目	National Natural Scientific Foundation of China[U1602231] ; National Natural Scientific Foundation of China[41725016] ; National Natural Scientific Foundation of China[41673098] ; CAS Interdisciplinary Innovation Team[JCTD-2019-03] ; Yunnan Provincial Scientific Innovation Team of Soil Environment and Ecological Safety, Kunming University of Science and Technology[2019HC008] ; UMass Amherst Conti Faculty Fellowship
WOS关键词	RICE STRAW ; BEHAVIOR ; DEGRADATION ; COMBUSTION ; MECHANISMS ; IMPACTS ; PRODUCT ; WASTE ; PM2.5 ; WOOD
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000584422500049
资助机构	National Natural Scientific Foundation of China ; CAS Interdisciplinary Innovation Team ; Yunnan Provincial Scientific Innovation Team of Soil Environment and Ecological Safety, Kunming University of Science and Technology ; UMass Amherst Conti Faculty Fellowship
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/34840]
专题	中国科学院广州能源研究所
通讯作者	Pan, Bo
作者单位	1.Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA 01003 USA 2.China Tobacco Yunnan Ind Co Ltd, Yunnan Key Lab Tobacco Chem, R&D Ctr, Kunming 650231, Yunnan, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 4.Kunming Univ Sci & Technol, Fac Environm Sci & Engn, Yunnan Prov Key Lab Soil Carbon Sequestrat & Poll, Kunming 650500, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Tao, Wenmei,Yang, Xingwei,Li, Yan,et al. Components and Persistent Free Radicals in the Volatiles during Pyrolysis of Lignocellulose Biomass[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2020,54(20):13274-13281.
APA	Tao, Wenmei.,Yang, Xingwei.,Li, Yan.,Zhu, Ruizhi.,Si, Xiaoxi.,...&Xing, Baoshan.(2020).Components and Persistent Free Radicals in the Volatiles during Pyrolysis of Lignocellulose Biomass.ENVIRONMENTAL SCIENCE & TECHNOLOGY,54(20),13274-13281.
MLA	Tao, Wenmei,et al."Components and Persistent Free Radicals in the Volatiles during Pyrolysis of Lignocellulose Biomass".ENVIRONMENTAL SCIENCE & TECHNOLOGY 54.20(2020):13274-13281.