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Production of biochar from rice husk: Particulate emissions from the combustion of raw pyrolysis volatiles
Dunnigan, Lewis1; Ashman, Peter J.1; Zhang, Xiangping2; Kwong, Chi Wai1
2018-01-20
Source PublicationJOURNAL OF CLEANER PRODUCTION
ISSN0959-6526
Volume172Pages:1639-1645
Abstract

Increasing energy demands and waste management concerns have motivated agricultural producers to consider the decentralized conversion of agricultural by-products for energy and value-added product (biochar) generation. Due to the variability of fuel properties, direct combustion of agricultural by-products with high ash contents, such as rice husk, may suffer from increased fouling and slagging issues with high particulate matter (PM) emissions. Combustion of the raw pyrolysis volatiles (bio-oil and synthesis gas (syngas) mixtures) produced from pyrolysis with the inherent separation of ash in the biochar may potentially mitigate these issues. In this study, PM emissions from the combustion of the raw pyrolysis volatiles derived from the pyrolysis of rice husk were evaluated at laboratory scale by using a combined pyrolysis and combustion facility. Pyrolysis temperatures ranging from 400 degrees C to 800 degrees C were used to generate raw pyrolysis volatiles with differing bio-oil to syngas ratios which were then combusted at 850 degrees C. It was found that bio-oil dominated the higher heating value of the raw pyrolysis volatiles produced at low pyrolysis temperatures. The combustion of such raw pyrolysis volatiles with high bio-oil content substantially increased the yields of PM10 and PM2.1. Linear dependence was observed between PM emissions and bio-oil fraction in the raw pyrolysis volatiles. Nevertheless, the pyrolysis-combustion process, with >96% of the ash retained in biochar prior to combustion, is more favorable than direct combustion for high ash biomass as far as PM emissions are concerned. (C) 2016 Elsevier Ltd. All rights reserved.

KeywordRice Husk Biochar Ash Particulate Emissions Pyrolysis Raw Pyrolysis Volatiles
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
DOI10.1016/j.jclepro.2016.11.107
Indexed BySCI
Language英语
WOS KeywordBio-oil Production ; Agricultural Residues ; Molecular-structure ; Particle Emissions ; Biomass Combustion ; Soot Formation ; Fuel ; Systems ; Pellets ; Temperature
WOS Research AreaScience & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
WOS SubjectGreen & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
Funding OrganizationGovernment of South Australia through the Premier's Research and Industry Fund Catalyst Researth Grants(CGR72)
WOS IDWOS:000423002200031
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23589
Collection多相复杂系统国家重点实验室
Affiliation1.Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia
2.Chinese Acad Sci, Inst Proc Engn, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Dunnigan, Lewis,Ashman, Peter J.,Zhang, Xiangping,et al. Production of biochar from rice husk: Particulate emissions from the combustion of raw pyrolysis volatiles[J]. JOURNAL OF CLEANER PRODUCTION,2018,172:1639-1645.
APA Dunnigan, Lewis,Ashman, Peter J.,Zhang, Xiangping,&Kwong, Chi Wai.(2018).Production of biochar from rice husk: Particulate emissions from the combustion of raw pyrolysis volatiles.JOURNAL OF CLEANER PRODUCTION,172,1639-1645.
MLA Dunnigan, Lewis,et al."Production of biochar from rice husk: Particulate emissions from the combustion of raw pyrolysis volatiles".JOURNAL OF CLEANER PRODUCTION 172(2018):1639-1645.
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