煤与玉米芯共燃烧过程中多环芳烃的排放

IF 0.8 4区 综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES
Reginald E. Masto, Pradeep K. Verma, Ashis Mukherjee, Lal C. Ram, Joshy George, Manish Kumar, Santi G. Sahu, Pinaki Sarkar, Sanjay K. Thakur
{"title":"煤与玉米芯共燃烧过程中多环芳烃的排放","authors":"Reginald E. Masto,&nbsp;Pradeep K. Verma,&nbsp;Ashis Mukherjee,&nbsp;Lal C. Ram,&nbsp;Joshy George,&nbsp;Manish Kumar,&nbsp;Santi G. Sahu,&nbsp;Pinaki Sarkar,&nbsp;Sanjay K. Thakur","doi":"10.1007/s40010-023-00862-8","DOIUrl":null,"url":null,"abstract":"<div><p>The emission of polycyclic aromatic hydrocarbons (PAHs) due to coal co-combustion with corncob (0, 10, 20, and 30%) was studied through a pilot scale drop tube furnace. Total PAHs (∑PAH) emission (gas + particulate) increased linearly from 19.4 µg/m<sup>3</sup> for coal combustion to 31.6, 39.8, and 42.0 µg/m<sup>3</sup> for 10, 20, and 30% corncob blends, respectively. Low-molecular-weight PAHs dominated the gas phase; medium- and high-molecular-weight PAHs in the particle phase. Naphthalene is the most prominent PAH in the gas phase. Emission of benzo[a]pyrene, increased by 45.9% at 10% corncob blend. However, its emission decreased by  − 19.1% and  − 87.3% for 20 and 30% corncob blends. Toxicity equivalence was also relatively higher for the 10% corncob blend but decreased greatly at 20 and 30% blends. For coal combustion, PAHs are generated due to the pyrolysis process, whereas for coal-corncob co-combustion, pyro-synthesis is the major route of PAH formation, as the PAH content was maximum at the later stage of combustion, i.e., at the bottom zone of the furnace. This study indicated that a minimum of 20% blending of corncob is required to achieve the beneficial effect of coal co-combustion in decreasing the emission of toxic PAHs.</p></div>","PeriodicalId":744,"journal":{"name":"Proceedings of the National Academy of Sciences, India Section A: Physical Sciences","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Emission of Polycyclic Aromatic Hydrocarbons from Co-combustion of Coal and Corncob\",\"authors\":\"Reginald E. Masto,&nbsp;Pradeep K. Verma,&nbsp;Ashis Mukherjee,&nbsp;Lal C. Ram,&nbsp;Joshy George,&nbsp;Manish Kumar,&nbsp;Santi G. Sahu,&nbsp;Pinaki Sarkar,&nbsp;Sanjay K. Thakur\",\"doi\":\"10.1007/s40010-023-00862-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The emission of polycyclic aromatic hydrocarbons (PAHs) due to coal co-combustion with corncob (0, 10, 20, and 30%) was studied through a pilot scale drop tube furnace. Total PAHs (∑PAH) emission (gas + particulate) increased linearly from 19.4 µg/m<sup>3</sup> for coal combustion to 31.6, 39.8, and 42.0 µg/m<sup>3</sup> for 10, 20, and 30% corncob blends, respectively. Low-molecular-weight PAHs dominated the gas phase; medium- and high-molecular-weight PAHs in the particle phase. Naphthalene is the most prominent PAH in the gas phase. Emission of benzo[a]pyrene, increased by 45.9% at 10% corncob blend. However, its emission decreased by  − 19.1% and  − 87.3% for 20 and 30% corncob blends. Toxicity equivalence was also relatively higher for the 10% corncob blend but decreased greatly at 20 and 30% blends. For coal combustion, PAHs are generated due to the pyrolysis process, whereas for coal-corncob co-combustion, pyro-synthesis is the major route of PAH formation, as the PAH content was maximum at the later stage of combustion, i.e., at the bottom zone of the furnace. This study indicated that a minimum of 20% blending of corncob is required to achieve the beneficial effect of coal co-combustion in decreasing the emission of toxic PAHs.</p></div>\",\"PeriodicalId\":744,\"journal\":{\"name\":\"Proceedings of the National Academy of Sciences, India Section A: Physical Sciences\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2023-11-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the National Academy of Sciences, India Section A: Physical Sciences\",\"FirstCategoryId\":\"103\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s40010-023-00862-8\",\"RegionNum\":4,\"RegionCategory\":\"综合性期刊\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MULTIDISCIPLINARY SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the National Academy of Sciences, India Section A: Physical Sciences","FirstCategoryId":"103","ListUrlMain":"https://link.springer.com/article/10.1007/s40010-023-00862-8","RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}
引用次数: 0

摘要

在中试降管炉上研究了煤与玉米芯(0、10、20、30%)共燃烧对多环芳烃(PAHs)的排放。煤燃烧时的总多环芳烃(∑PAH)排放量(气体+颗粒物)从19.4µg/m3线性增加到10%、20%和30%玉米芯混合物的31.6、39.8和42.0µg/m3。气相以低分子量多环芳烃为主;颗粒相中、高分子量多环芳烃。萘是气相中最突出的多环芳烃。在玉米芯混合物中,苯并[a]芘的排放量增加了45.9%。而玉米芯含量为20%和30%的混合物,其排放量分别下降了- 19.1%和- 87.3%。10%玉米芯混合物的毒性等效性也相对较高,而20%和30%玉米芯混合物的毒性等效性则大大降低。对于煤的燃烧,多环芳烃是通过热解过程产生的,而对于煤-玉米芯共燃烧,多环芳烃的主要生成途径是热解合成,在燃烧后期即炉底区多环芳烃含量最高。本研究表明,至少需要20%的玉米芯掺量才能达到煤共燃在减少有毒多环芳烃排放方面的有益效果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Emission of Polycyclic Aromatic Hydrocarbons from Co-combustion of Coal and Corncob

Emission of Polycyclic Aromatic Hydrocarbons from Co-combustion of Coal and Corncob

Emission of Polycyclic Aromatic Hydrocarbons from Co-combustion of Coal and Corncob

The emission of polycyclic aromatic hydrocarbons (PAHs) due to coal co-combustion with corncob (0, 10, 20, and 30%) was studied through a pilot scale drop tube furnace. Total PAHs (∑PAH) emission (gas + particulate) increased linearly from 19.4 µg/m3 for coal combustion to 31.6, 39.8, and 42.0 µg/m3 for 10, 20, and 30% corncob blends, respectively. Low-molecular-weight PAHs dominated the gas phase; medium- and high-molecular-weight PAHs in the particle phase. Naphthalene is the most prominent PAH in the gas phase. Emission of benzo[a]pyrene, increased by 45.9% at 10% corncob blend. However, its emission decreased by  − 19.1% and  − 87.3% for 20 and 30% corncob blends. Toxicity equivalence was also relatively higher for the 10% corncob blend but decreased greatly at 20 and 30% blends. For coal combustion, PAHs are generated due to the pyrolysis process, whereas for coal-corncob co-combustion, pyro-synthesis is the major route of PAH formation, as the PAH content was maximum at the later stage of combustion, i.e., at the bottom zone of the furnace. This study indicated that a minimum of 20% blending of corncob is required to achieve the beneficial effect of coal co-combustion in decreasing the emission of toxic PAHs.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
CiteScore
2.60
自引率
0.00%
发文量
37
审稿时长
>12 weeks
期刊介绍: To promote research in all the branches of Science & Technology; and disseminate the knowledge and advancements in Science & Technology
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信