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Article(id=1314922096166273599, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314921940238828053, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1749484800000, receivedDateStr=2025-06-10, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1791431457796, onlineDateStr=2026-10-08, pubDate=1768838400000, pubDateStr=2026-01-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791431457796, onlineIssueDateStr=2026-10-08, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791431457796, creator=13701087609, updateTime=1791431457796, updator=13701087609, issue=Issue{id=1314921940238828053, tenantId=1146029695717560320, journalId=1234093305789726721, year='2026', volume='46', issue='1', pageStart='1', pageEnd='592', issueExtLink='null', onlineDate='null', pubDate='1768838400000', pubDateStr='2026-01-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1791431420621, creator='13701087609', updateTime=1791431552947, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1314922495317210104, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314921940238828053, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1314922495317210105, tenantId=1146029695717560320, journalId=1234093305789726721, issueId=1314921940238828053, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=484, endPage=492, ext={EN=ArticleExt(id=1314922096346628672, articleId=1314922096166273599, tenantId=1146029695717560320, journalId=1234093305789726721, language=EN, title=Exergy-based life cycle analysis for sustainability assessment of direct air carbon capture systems, columnId=1234106390126588740, journalTitle=China Environmental Science, columnName=Carbon Emission Control, runingTitle=null, highlight=null, articleAbstract=

Direct air carbon capture (DAC) technology reached the stage of commercial deployment, yet its large-scale application still faced challenges of high energy consumption and resource-environmental impacts. An exergy-based life cycle assessment (ExLCA) framework for DAC systems was established, with their performance being evaluated across energy, resource, and environmental dimensions. It was shown that under grid-electricity and natural gas energy supply scenarios, the system's life cycle energy consumption was 10.22GJ/tCO2, with thermal energy demand for capture, CO2 compression, and oxygen production through air separation being identifiedas the dominant energy-intensive processes, which accounted for 62.72%, 13.41%, and 8.98%, respectively. The cumulative exergy consumption over the life cycle was 9.19GJ/t CO2, with electricity and thermal energy contributing 39.98% and 58.93% to total exergy consumption, while material-related exergy was accounted for only 1.09%, which was negligible. In terms of environmental benefits, a life cycle carbon removal efficiency of 47.50% was achieved by the system, with thermal energy and electricity consumption contributing 53.18% and 33.43% to total carbon emissions. Carbon removal efficiency could be increased to 88.60% by transitioning to biomass and wind power as energy sources. Furthermore, 80kg of water and 1465(m2·a) per ton of CO2 removed were required by the system, highlighting the need for careful resource management in large-scale deployment.

, authors=Jia-hui YAN1, 2, Song HE3, 4, Jun-yao WANG1, 2, 4, *, Ying CHEN1, 2, Xue-lan ZENG3, 4, Zhi-peng TIAN1, 2, Li-bin LEI1, 2, Jian-ping LIU1, 2, authorsList=Jia-hui YAN, Song HE, Jun-yao WANG, Ying CHEN, Xue-lan ZENG, Zhi-peng TIAN, Li-bin LEI, Jian-ping LIU, authorCompany=null, correspAuthors=Jun-yao WANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314922096560538178, articleId=1314922096166273599, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=基于㶲生命周期分析的直接空气碳捕集技术可持续性研究, columnId=1234106391661704058, journalTitle=中国环境科学, columnName=碳排放控制, runingTitle=null, highlight=null, articleAbstract=

建立面向化学吸收法直接空气碳捕集（DAC）技术的㶲-生命周期评价框架，从能源、资源和环境多维度对其评估．结果表明，在电网和天然气供能基准情景下，系统生命周期能耗为10.22GJ/t CO2，运行阶段捕集热耗、CO2压缩和空分制氧是主要耗能环节，占比分别为62.72%，13.41%和8.98%．系统生命周期累积㶲耗和第二定律效率分别为9.19GJ/t CO2和10.34%，电能累积㶲耗和热能累积㶲耗分别占比39.98%和58.93%，材料㶲占比为1.09%，可忽略不计．在环境效益方面，系统生命周期碳移除效率为47.50%，捕集热耗和电耗分别贡献53.18%和33.43%的碳排放．若采用生物质和风电供能，系统生命周期碳移除效率可提升至88.60%．此外，系统生命周期水耗和土地利用分别为80kg/t CO2和1465（m2·a）/t CO2，规模化部署时需进一步权衡．

, authors=严家辉1, 2, 何松3, 4, 王珺瑶1, 2, 4, *, 陈颖1, 2, 曾雪兰3, 4, 田志鹏1, 2, 雷励斌1, 2, 刘建平1, 2, authorsList=严家辉, 何松, 王珺瑶, 陈颖, 曾雪兰, 田志鹏, 雷励斌, 刘建平, authorCompany=null, correspAuthors=王珺瑶, authorNote=

严家辉（2000-），男，安徽六安人，广东工业大学硕士研究生，主要从事直接空气碳捕集的可持续性评估．.

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* 责任作者，副教授，
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严家辉（2000-），男，安徽六安人，广东工业大学硕士研究生，主要从事直接空气碳捕集的可持续性评估．.

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严家辉（2000-），男，安徽六安人，广东工业大学硕士研究生，主要从事直接空气碳捕集的可持续性评估．.

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基于㶲生命周期分析的直接空气碳捕集技术可持续性研究
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严家辉 1, 2 , 何松 3, 4 , 王珺瑶 1, 2, 4, * , 陈颖 1, 2 , 曾雪兰 3, 4 , 田志鹏 1, 2 , 雷励斌 1, 2 , 刘建平 1, 2
中国环境科学 | 碳排放控制 2026,46(1): 484-492
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中国环境科学 |碳排放控制 2026 , 46 (1) : 484 -492
基于㶲生命周期分析的直接空气碳捕集技术可持续性研究
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严家辉（2000-），男，安徽六安人，广东工业大学硕士研究生，主要从事直接空气碳捕集的可持续性评估．.

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严家辉（2000-），男，安徽六安人，广东工业大学硕士研究生，主要从事直接空气碳捕集的可持续性评估．.

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严家辉1, 2 , 何松3, 4, 王珺瑶1, 2, 4, * , 陈颖1, 2, 曾雪兰3, 4, 田志鹏1, 2, 雷励斌1, 2, 刘建平1, 2
作者信息
  • 1.广东工业大学材料与能源学院，广东 广州 510006
  • 2.广东省功能凝聚态物质重点实验室，广东 广州 510006
  • 3.广东工业大学环境生态工程研究院，广东 广州 510006
  • 4.广东工业大学碳中和与绿色发展协同创新研究院，广东 广州 510006
通讯作者:
* 责任作者，副教授，
作者简介:

严家辉（2000-），男，安徽六安人，广东工业大学硕士研究生，主要从事直接空气碳捕集的可持续性评估．.

Exergy-based life cycle analysis for sustainability assessment of direct air carbon capture systems
Jia-hui YAN1, 2 , Song HE3, 4, Jun-yao WANG1, 2, 4, * , Ying CHEN1, 2, Xue-lan ZENG3, 4, Zhi-peng TIAN1, 2, Li-bin LEI1, 2, Jian-ping LIU1, 2
Affiliations
  • 1.College of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
  • 2.Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, Guangzhou 510006, China
  • 3.Institute of Environmental Ecology Engineering, Guangdong University of Technology, Guangzhou 510006, China
  • 4.Collaborative Innovation Institute of Carbon Neutrality and Green Development, Guangdong University of Technology, Guangzhou 510006, China
出版时间: 2026-01-20
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建立面向化学吸收法直接空气碳捕集（DAC）技术的㶲-生命周期评价框架，从能源、资源和环境多维度对其评估．结果表明，在电网和天然气供能基准情景下，系统生命周期能耗为10.22GJ/t CO2，运行阶段捕集热耗、CO2压缩和空分制氧是主要耗能环节，占比分别为62.72%，13.41%和8.98%．系统生命周期累积㶲耗和第二定律效率分别为9.19GJ/t CO2和10.34%，电能累积㶲耗和热能累积㶲耗分别占比39.98%和58.93%，材料㶲占比为1.09%，可忽略不计．在环境效益方面，系统生命周期碳移除效率为47.50%，捕集热耗和电耗分别贡献53.18%和33.43%的碳排放．若采用生物质和风电供能，系统生命周期碳移除效率可提升至88.60%．此外，系统生命周期水耗和土地利用分别为80kg/t CO2和1465（m2·a）/t CO2，规模化部署时需进一步权衡．

直接空气碳捕集  /  负排放  /  热力学  /  㶲分析  /  生命周期评价

Direct air carbon capture (DAC) technology reached the stage of commercial deployment, yet its large-scale application still faced challenges of high energy consumption and resource-environmental impacts. An exergy-based life cycle assessment (ExLCA) framework for DAC systems was established, with their performance being evaluated across energy, resource, and environmental dimensions. It was shown that under grid-electricity and natural gas energy supply scenarios, the system's life cycle energy consumption was 10.22GJ/tCO2, with thermal energy demand for capture, CO2 compression, and oxygen production through air separation being identifiedas the dominant energy-intensive processes, which accounted for 62.72%, 13.41%, and 8.98%, respectively. The cumulative exergy consumption over the life cycle was 9.19GJ/t CO2, with electricity and thermal energy contributing 39.98% and 58.93% to total exergy consumption, while material-related exergy was accounted for only 1.09%, which was negligible. In terms of environmental benefits, a life cycle carbon removal efficiency of 47.50% was achieved by the system, with thermal energy and electricity consumption contributing 53.18% and 33.43% to total carbon emissions. Carbon removal efficiency could be increased to 88.60% by transitioning to biomass and wind power as energy sources. Furthermore, 80kg of water and 1465(m2·a) per ton of CO2 removed were required by the system, highlighting the need for careful resource management in large-scale deployment.

direct air carbon capture  /  negative emission  /  thermodynamics  /  exergy analysis  /  life cycle assessment
严家辉, 何松, 王珺瑶, 陈颖, 曾雪兰, 田志鹏, 雷励斌, 刘建平. 基于㶲生命周期分析的直接空气碳捕集技术可持续性研究. 中国环境科学, 2026 , 46 (1) : 484 -492 .
Jia-hui YAN, Song HE, Jun-yao WANG, Ying CHEN, Xue-lan ZENG, Zhi-peng TIAN, Li-bin LEI, Jian-ping LIU. Exergy-based life cycle analysis for sustainability assessment of direct air carbon capture systems[J]. China Environmental Science, 2026 , 46 (1) : 484 -492 .
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  • 国家自然科学基金青年基金(72104257)
  • 广东省自然科学基金面上项目(2024A1515012661; 2023A1515240056)
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  • 接收时间：2025-06-10
  • 首发时间：2026-10-08
  • 出版时间：2026-01-20
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  • 收稿日期：2025-06-10
基金
国家自然科学基金青年基金(72104257)
广东省自然科学基金面上项目(2024A1515012661; 2023A1515240056)
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    1.广东工业大学材料与能源学院，广东 广州 510006
    2.广东省功能凝聚态物质重点实验室，广东 广州 510006
    3.广东工业大学环境生态工程研究院，广东 广州 510006
    4.广东工业大学碳中和与绿色发展协同创新研究院，广东 广州 510006

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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
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红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
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