AEEA/NHD/H2O Phase-Change Absorption System: A Novel High-Efficiency and Low-Energy-Consumption Strategy for Carbon Capture

AEEA/NHD/H2O Phase-Change Absorption System: A Novel High-Efficiency and Low-Energy-Consumption Strategy for Carbon Capture | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article AEEA/NHD/H 2 O Phase-Change Absorption System: A Novel High-Efficiency and Low-Energy-Consumption Strategy for Carbon Capture Mingyang Yin, Xiao Chen, Yuyan Chen, Xia Gui This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7726085/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 4 You are reading this latest preprint version Abstract Conventional amine-based solvent CO 2 absorption faces the problems of high regeneration energy consumption and serious equipment corrosion. In this paper, a composite absorber with liquid-liquid phase change characteristics is innovatively proposed: a ternary system of AEEA/NHD/H 2 O. At the optimal operating temperature (313.15 K), the mass ratio of NHD to H 2 O is 10:10, and the concentration of AEEA is 15 wt.%, the CO 2 absorption capacity reaches 0.98 mol CO 2 /mol amine, and the proportion of rich-phase CO 2 is increased to 97.6%, and the solution viscosity is only 14.29 mPa·s. Compared with the traditional 30 wt.% MEA industrial absorbent, the absorption capacity of this system is increased by 121%, and the CO 2 desorption capacity was 0.79 mol CO 2 ·mol -1 amine by adding 5 mL of lean-phase solution and stirring for 33 min at the desorption temperature of 393.15 K. The regeneration efficiency reaches 60.93%, and the absorption capacity decreases by only 9% after five consecutive absorption-desorption cycles. The energy consumption of the system was stabilized at 2.37 GJ/t CO 2 , which was 38.4% lower than that of the 30 wt.% MEA system. This study provides a novel technical solution for industrial carbon capture with high efficiency and low consumption. carbon capture phase change absorber absorption efficiency regeneration energy consumption Full Text Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 11 Oct, 2025 Reviewers invited by journal 10 Oct, 2025 Editor assigned by journal 06 Oct, 2025 First submitted to journal 29 Sep, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7726085","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":527422919,"identity":"b01e0bb6-b2d4-4460-8180-7ed5c9a6a05a","order_by":0,"name":"Mingyang Yin","email":"","orcid":"","institution":"Nanjing University of Technology - Jiangpu Campus: Nanjing Tech University","correspondingAuthor":false,"prefix":"","firstName":"Mingyang","middleName":"","lastName":"Yin","suffix":""},{"id":527422920,"identity":"492c53a2-bcc3-41f3-8921-4968dba87ad3","order_by":1,"name":"Xiao Chen","email":"","orcid":"","institution":"Nanjing University of 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Engineering","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Subscription","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"carbon capture, phase change absorber, absorption efficiency, regeneration energy consumption","lastPublishedDoi":"10.21203/rs.3.rs-7726085/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7726085/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eConventional amine-based solvent CO\u003csub\u003e2\u003c/sub\u003e absorption faces the problems of high regeneration energy consumption and serious equipment corrosion. In this paper, a composite absorber with liquid-liquid phase change characteristics is innovatively proposed: a ternary system of AEEA/NHD/H\u003csub\u003e2\u003c/sub\u003eO. At the optimal operating temperature (313.15 K), the mass ratio of NHD to H\u003csub\u003e2\u003c/sub\u003eO is 10:10, and the concentration of AEEA is 15 wt.%, the CO\u003csub\u003e2\u003c/sub\u003e absorption capacity reaches 0.98 mol CO\u003csub\u003e2\u003c/sub\u003e/mol amine, and the proportion of rich-phase CO\u003csub\u003e2\u003c/sub\u003e is increased to 97.6%, and the solution viscosity is only 14.29 mPa·s. Compared with the traditional 30 wt.% MEA industrial absorbent, the absorption capacity of this system is increased by 121%,\u0026nbsp; and the CO\u003csub\u003e2\u003c/sub\u003e desorption capacity was 0.79 mol CO\u003csub\u003e2\u003c/sub\u003e·mol\u003csup\u003e-1\u003c/sup\u003e amine by adding 5 mL of lean-phase solution and stirring for 33 min at the desorption temperature of 393.15 K. The regeneration efficiency reaches 60.93%, and the absorption capacity decreases by only 9% after five consecutive absorption-desorption cycles. The energy consumption of the system was stabilized at 2.37 GJ/t CO\u003csub\u003e2\u003c/sub\u003e, which was 38.4% lower than that of the 30 wt.% MEA system. This study provides a novel technical solution for industrial carbon capture with high efficiency and low consumption.\u003c/p\u003e","manuscriptTitle":"AEEA/NHD/H2O Phase-Change Absorption System: A Novel High-Efficiency and Low-Energy-Consumption Strategy for Carbon Capture","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-10-23 07:12:51","doi":"10.21203/rs.3.rs-7726085/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"reviewerAgreed","content":"","date":"2025-10-11T05:25:34+00:00","index":0,"fulltext":""},{"type":"reviewersInvited","content":"","date":"2025-10-10T05:01:07+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2025-10-06T06:27:50+00:00","index":"","fulltext":""},{"type":"submitted","content":"Korean Journal of Chemical Engineering","date":"2025-09-29T06:28:23+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"korean-journal-of-chemical-engineering","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"kjce","sideBox":"Learn more about [Korean Journal of Chemical Engineering](http://link.springer.com/journal/11814)","snPcode":"11814","submissionUrl":"https://www.editorialmanager.com/kjce/default2.aspx","title":"Korean Journal of Chemical Engineering","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Subscription","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"bfdeefa9-80c3-4ee6-addf-5b4316d5f950","owner":[],"postedDate":"October 23rd, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[],"tags":[],"updatedAt":"2026-04-15T23:56:54+00:00","versionOfRecord":[],"versionCreatedAt":"2025-10-23 07:12:51","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-7726085","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7726085","identity":"rs-7726085","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}