Pyrolysis of hydrothermally pretreated biowastes: The controllability on the formation of NOx precursors

doi:10.1016/j.cej.2020.124727

	Pyrolysis of hydrothermally pretreated biowastes: The controllability on the formation of NOx precursors
	Zhuang, Xiuzheng 1,2,3,4; Song, Yanpei 2,4; Wang, Xinming 1,3,4; Zhan, Hao 1,3; Yin, Xiuli 2; Wu, Chuangzhi 2,4; Wang, Peng 2
刊名	CHEMICAL ENGINEERING JOURNAL
	2020-08-01
卷号	393 页码:14
关键词	Coupled approach Industrial biowaste Regulatory mechanism NOx precursor Hydrothermal pretreatment High-temperature pyrolysis
ISSN号	1385-8947
DOI	10.1016/j.cej.2020.124727
通讯作者	Zhan, Hao(zhanhao@gig.ac.cn) ; Yin, Xiuli(xlyin@ms.giec.ac.cn)
英文摘要	Process control of the NOx precursors emitted from thermal utilization of industrial biowastes is the major objective of this study, mainly through a novel coupled approach involving an initial hydrothermal pretreatment and a subsequent high-temperature pyrolysis. Three typical industrial biowaste types (i.e., herbal tea waste-HTW, penicillin mycelia waste-PMW and sewage sludge-SS) were selected to guarantee diversity, and regulatory mechanisms of NOx precursors (i.e., NH3 and HCN) were simultaneously examined by quantitatively comparing their formation characteristics among different coupled hydrothermal-pyrolysis processes. The experimental results demonstrated that hydrothermal pretreatment affects the formation pathways related to NOx precursors at different pyrolysis stages, thereby minimizing their total yield by 36.14-85.02 % (for HTW), 56.68-92.78% (for PMW) and 66.14-95.24% (for SS), with a greater effect on NH3-N than on HCN-N. Overall, the nitrogen removal during hydrothermal pretreatment is one reason weakening the origin of NOx precursors at the primary pyrolysis stage, while the nitrogen functionality stabilization during hydrothermal pretreatment is another factor inhibiting the formation of NOx precursors at the secondary reaction stage. Complementary analyses on pyrolytic tar and nitrogen distribution evaluation throughout the whole process were also conducted to gain an in-depth understanding of the control of NOx emissions through different coupled hydrothermal-pyrolysis processes. These findings indicated an excellent controllability for the formation of NOx precursors from industrial biowastes, which is believed to offer helpful guidance on release control of N-containing gaseous pollutants during energy utilization.
资助项目	National Natural Science Foundation of China[41530641] ; National Natural Science Foundation of China[51906247] ; Science and Technology Program of Guangdong Province[2017A050501060] ; Guangdong Foundation for Program of Science and Technology Research[2017B030314057]
WOS关键词	INDUSTRIAL BIOMASS WASTES ; SEWAGE-SLUDGE ; FUEL-N ; AMINO-ACIDS ; NITROGEN ; EVOLUTION ; COMBUSTION ; EMISSION ; TRANSFORMATION ; CONVERSION
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000543713600048
资助机构	National Natural Science Foundation of China ; Science and Technology Program of Guangdong Province ; Guangdong Foundation for Program of Science and Technology Research
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/27444]
专题	中国科学院广州能源研究所
通讯作者	Zhan, Hao; Yin, Xiuli
作者单位	1.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Key Lab Environm Protect & Resources Ut, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangdong Key Lab New & Renewable Energy Res & De, Key Lab Renewable Energy,CAS, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhuang, Xiuzheng,Song, Yanpei,Wang, Xinming,et al. Pyrolysis of hydrothermally pretreated biowastes: The controllability on the formation of NOx precursors[J]. CHEMICAL ENGINEERING JOURNAL,2020,393:14.
APA	Zhuang, Xiuzheng.,Song, Yanpei.,Wang, Xinming.,Zhan, Hao.,Yin, Xiuli.,...&Wang, Peng.(2020).Pyrolysis of hydrothermally pretreated biowastes: The controllability on the formation of NOx precursors.CHEMICAL ENGINEERING JOURNAL,393,14.
MLA	Zhuang, Xiuzheng,et al."Pyrolysis of hydrothermally pretreated biowastes: The controllability on the formation of NOx precursors".CHEMICAL ENGINEERING JOURNAL 393(2020):14.