油砂设施是环烷酸分馏化合物向大气的排放源

Samar G. Moussa*, John Liggio, Jeremy Wentzell, Ralf M. Staebler, Zoey Friel-Bartlett, Meguel A. Yousif, Haryug Singh Rai, Yuan You, Andrea Darlington, Katherine Hayden and Shao-Meng Li, 
{"title":"油砂设施是环烷酸分馏化合物向大气的排放源","authors":"Samar G. Moussa*,&nbsp;John Liggio,&nbsp;Jeremy Wentzell,&nbsp;Ralf M. Staebler,&nbsp;Zoey Friel-Bartlett,&nbsp;Meguel A. Yousif,&nbsp;Haryug Singh Rai,&nbsp;Yuan You,&nbsp;Andrea Darlington,&nbsp;Katherine Hayden and Shao-Meng Li,&nbsp;","doi":"10.1021/acsestair.5c00100","DOIUrl":null,"url":null,"abstract":"<p >The oil sands (OS) region in Canada hosts one of the world’s largest unconventional crude oil deposits in the form of bitumen, which, when extracted, generates substantial tailings/wastewater that are stored in on-site ponds. Naphthenic acid fractional compounds (NAFCs), a complex mixture of alkyl-substituted acyclic and cycloaliphatic organic acids, are natural bitumen components known for their ecological toxicity and are concentrated during the extraction process into tailings ponds, where they are assumed to remain confined to the aqueous phase. Here, we quantify the emissions of up to 275 NAFCs to the atmosphere from a tailings pond and from facility-wide operations at major OS facilities. The results indicate that, despite the absence of NAFC air emissions in inventories, large quantities are emitted to the atmosphere, likely originating from surface photochemical and/or biodegradation processes. Emission rates across entire operations ranged from 3509 to 7286 kg h<sup>–1</sup>, translating to annual emissions of 1163–2660 tonnes from both primary and secondary sources. The findings imply that NAFC air emissions may serve as a key pathway for these chemicals to enter the environment, potentially impacting downwind ecosystems.</p><p >Harmful chemicals called NAFCs found in bitumen were thought to remain in tailings ponds water. However, this study shows that large amounts─up to 2660 tonnes per year─escape into the atmosphere from Oil Sands operations</p>","PeriodicalId":100014,"journal":{"name":"ACS ES&T Air","volume":"2 8","pages":"1612–1624"},"PeriodicalIF":0.0000,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsestair.5c00100","citationCount":"0","resultStr":"{\"title\":\"Oil Sands Facilities Are an Emission Source of Naphthenic Acid Fractional Compounds to the Atmosphere\",\"authors\":\"Samar G. Moussa*,&nbsp;John Liggio,&nbsp;Jeremy Wentzell,&nbsp;Ralf M. Staebler,&nbsp;Zoey Friel-Bartlett,&nbsp;Meguel A. Yousif,&nbsp;Haryug Singh Rai,&nbsp;Yuan You,&nbsp;Andrea Darlington,&nbsp;Katherine Hayden and Shao-Meng Li,&nbsp;\",\"doi\":\"10.1021/acsestair.5c00100\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >The oil sands (OS) region in Canada hosts one of the world’s largest unconventional crude oil deposits in the form of bitumen, which, when extracted, generates substantial tailings/wastewater that are stored in on-site ponds. Naphthenic acid fractional compounds (NAFCs), a complex mixture of alkyl-substituted acyclic and cycloaliphatic organic acids, are natural bitumen components known for their ecological toxicity and are concentrated during the extraction process into tailings ponds, where they are assumed to remain confined to the aqueous phase. Here, we quantify the emissions of up to 275 NAFCs to the atmosphere from a tailings pond and from facility-wide operations at major OS facilities. The results indicate that, despite the absence of NAFC air emissions in inventories, large quantities are emitted to the atmosphere, likely originating from surface photochemical and/or biodegradation processes. Emission rates across entire operations ranged from 3509 to 7286 kg h<sup>–1</sup>, translating to annual emissions of 1163–2660 tonnes from both primary and secondary sources. The findings imply that NAFC air emissions may serve as a key pathway for these chemicals to enter the environment, potentially impacting downwind ecosystems.</p><p >Harmful chemicals called NAFCs found in bitumen were thought to remain in tailings ponds water. However, this study shows that large amounts─up to 2660 tonnes per year─escape into the atmosphere from Oil Sands operations</p>\",\"PeriodicalId\":100014,\"journal\":{\"name\":\"ACS ES&T Air\",\"volume\":\"2 8\",\"pages\":\"1612–1624\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2025-07-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://pubs.acs.org/doi/pdf/10.1021/acsestair.5c00100\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS ES&T Air\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsestair.5c00100\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS ES&T Air","FirstCategoryId":"1085","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsestair.5c00100","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

摘要

加拿大的油砂(OS)地区拥有世界上最大的以沥青形式存在的非常规原油矿床之一,这些原油在开采时产生大量的尾矿/废水,这些尾矿/废水储存在现场的池塘中。环烷酸分数化合物(NAFCs)是烷基取代的无环和环脂肪族有机酸的复杂混合物,是天然沥青成分,以其生态毒性而闻名,在提取过程中被浓缩到尾矿池中,在那里它们被认为仍然局限于水相。在这里,我们量化了从尾矿库和主要OS设施的全设施运营中向大气排放的多达275种NAFCs。结果表明,尽管清单中没有NAFC气体排放,但仍有大量排放到大气中,可能来自地表光化学和/或生物降解过程。整个作业的排放率为3509至7286公斤每小时,相当于每年从一次和二次源排放1163至2660吨。研究结果表明,NAFC气体排放可能是这些化学物质进入环境的关键途径,可能会影响顺风生态系统。在沥青中发现的被称为NAFCs的有害化学物质被认为留在尾矿池的水中。然而,这项研究显示,每年有多达2660吨的污染物从油砂作业中排放到大气中
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Oil Sands Facilities Are an Emission Source of Naphthenic Acid Fractional Compounds to the Atmosphere

The oil sands (OS) region in Canada hosts one of the world’s largest unconventional crude oil deposits in the form of bitumen, which, when extracted, generates substantial tailings/wastewater that are stored in on-site ponds. Naphthenic acid fractional compounds (NAFCs), a complex mixture of alkyl-substituted acyclic and cycloaliphatic organic acids, are natural bitumen components known for their ecological toxicity and are concentrated during the extraction process into tailings ponds, where they are assumed to remain confined to the aqueous phase. Here, we quantify the emissions of up to 275 NAFCs to the atmosphere from a tailings pond and from facility-wide operations at major OS facilities. The results indicate that, despite the absence of NAFC air emissions in inventories, large quantities are emitted to the atmosphere, likely originating from surface photochemical and/or biodegradation processes. Emission rates across entire operations ranged from 3509 to 7286 kg h–1, translating to annual emissions of 1163–2660 tonnes from both primary and secondary sources. The findings imply that NAFC air emissions may serve as a key pathway for these chemicals to enter the environment, potentially impacting downwind ecosystems.

Harmful chemicals called NAFCs found in bitumen were thought to remain in tailings ponds water. However, this study shows that large amounts─up to 2660 tonnes per year─escape into the atmosphere from Oil Sands operations

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
自引率
0.00%
发文量
0
×
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:604180095
Book学术官方微信