Comparative study on the pyrolysis kinetics of polyurethane foam from waste refrigerators

doi:10.1177/0734242X19877682

GIEC OpenIR

	Comparative study on the pyrolysis kinetics of polyurethane foam from waste refrigerators
	Yao, Zhitong 1,3; Yu, Shaoqi 1; Su, Weiping 1; Wu, Weihong 1; Tang, Junhong 1; Qi, Wei2
	2020-03-01
Source Publication	WASTE MANAGEMENT & RESEARCH
ISSN	0734-242X
Volume	38 Issue:3 Pages:271-278
Corresponding Author	Yao, Zhitong(sxyzt@126.com)
Abstract	Thermal treatment offers advantages of significant volume reduction and energy recovery for the polyurethane foam from waste refrigerators. In this work, the pyrolysis kinetics of polyurethane foam was investigated using the model-fitting, model-free and distributed activation energy model methods. The thermogravimetric analysis indicated that the polyurethane foam decomposition could be divided into three stages with temperatures of 38 degrees C-400 degrees C, 400 degrees C-550 degrees C and 550 degrees C-1000 degrees C. Peak temperatures for the major decomposition stage (<400 degrees C) were determined as 324 degrees C, 342 degrees C and 344 degrees C for heating rates of 5, 15 and 25 K min^-1, respectively. The activation energy (Ealpha) from the Friedman, Flynn-Wall-Ozawa and Tang methods increased with degree of conversion (alpha) in the range of 0.05 to 0.5. The coefficients from the Flynn-Wall-Ozawa method were larger and the resulted E alpha values fell into the range of 163.980-328.190 kJ mol^-1 with an average of 206.099 kJ mol^-1. For the Coats-Redfern method, the diffusion models offered higher coefficients, but the E values were smaller than that from the Flynn-Wall-Ozawa method. The E alpha values derived from the distributed activation energy model method were determined as 163.536-334.231 kJ mol^-1, with an average of 206.799 kJ mol^-1. The peak of activation energy distribution curve was located at 205.929 kJ mol^-1, consistent with the thermogravimetric results. The Flynn-Wall-Ozawa and distributed activation energy model methods were more reliable for describing the polyurethane foam pyrolysis process.
Keyword	Polyurethane foam electronic waste pyrolysis kinetics model-fitting and -free method distributed activation energy model
DOI	10.1177/0734242X19877682
WOS Keyword	ACTIVATION-ENERGY MODEL ; THERMAL-DEGRADATION ; CORNCOB SACCHARIFICATION ; BIOMASS ; COMBUSTION ; THERMOGRAVIMETRY ; DECOMPOSITION ; PARAMETERS ; MANAGEMENT ; PRODUCTS
Indexed By	SCI
Language	英语
WOS Research Area	Engineering ; Environmental Sciences & Ecology
WOS Subject	Engineering, Environmental ; Environmental Sciences
WOS ID	WOS:000513377100006
Publisher	SAGE PUBLICATIONS LTD
Citation statistics	Cited Times:30[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.giec.ac.cn/handle/344007/26436
Collection	中国科学院广州能源研究所
Corresponding Author	Yao, Zhitong
Affiliation	1.Hangzhou Dianzi Univ, Coll Materials, Environm Engn, Hangzhou, Peoples R China 2.Guangzhou Inst Energy Convers, Chinese Acad Sciences, Guangzhou, Peoples R China 3.Hangzhou Dianzi Univ, Coll Materials, Zhitong Yao, Environm Engn, Hangzhou, Peoples R China
Recommended Citation GB/T 7714	Yao, Zhitong,Yu, Shaoqi,Su, Weiping,et al. Comparative study on the pyrolysis kinetics of polyurethane foam from waste refrigerators[J]. WASTE MANAGEMENT & RESEARCH,2020,38(3):271-278.
APA	Yao, Zhitong,Yu, Shaoqi,Su, Weiping,Wu, Weihong,Tang, Junhong,&Qi, Wei.(2020).Comparative study on the pyrolysis kinetics of polyurethane foam from waste refrigerators.WASTE MANAGEMENT & RESEARCH,38(3),271-278.
MLA	Yao, Zhitong,et al."Comparative study on the pyrolysis kinetics of polyurethane foam from waste refrigerators".WASTE MANAGEMENT & RESEARCH 38.3(2020):271-278.

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