Investigation of Metal Ion Additives on the Suppression of Ammonia Loss and CO2 Absorption Kinetics of Aqueous Ammonia-based CO2 Capture

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avondale-bepress-to-dspace.facultyScience
avondale-bepress-to-dspace.peer_review_statusPeer reviewed before publication
avondale-bepress.abstract<p>Aqueous ammonia is an attractive absorbent for the capture of CO<sub>2</sub> from industrial flue gases. However evaporative ammonia loss limits the application of the ammonia-based CO<sub>2</sub> capture process. The use of metal ion additives (where M(II) = Cu(II), Zn(II) and Ni(II)), has been reported previously for the effective suppression of ammonia loss in the post combustion capture of CO<sub>2</sub>. In this study, we have investigated the absorption of CO<sub>2</sub> into various M(II)/NH<sub>3</sub> solutions, the resulting loss of ammonia to evaporation, and have attempted to rationalise the observed effects using an extended chemical model that includes all chemical reactions in solution. The theoretical and experimental investigations suggest that complexation of ammonia by metal ions effectively reduces the concentration of free ammonia, resulting in reduced evaporative loss but also reduced reactivity towards CO<sub>2</sub>. Simple reduction of the total NH<sub>3</sub> concentration to the same concentration of free NH<sub>3</sub> concentration as that obtained by the addition of M(II) showed a similar reduction in the ammonia loss as well as the CO<sub>2</sub> absorption rate. The effects on CO<sub>2</sub> absorption capacity at 25 and 80 °C, cyclic capacity and regeneration energy are also simulated and discussed.</p>
avondale-bepress.articleid1096
avondale-bepress.authorsLichun Li
avondale-bepress.authorsWilliam Conway
avondale-bepress.authorsRobert Burns
avondale-bepress.authorsMarcel Maeder
avondale-bepress.authorsGraeme Puxty
avondale-bepress.authorsSarah Clifford
avondale-bepress.authorsHai Yu
avondale-bepress.context-key12530339
avondale-bepress.coverpage-urlhttps://research.avondale.edu.au/sci_math_papers/97
avondale-bepress.document-typearticle
avondale-bepress.field.author_faculty_disciplineScience
avondale-bepress.field.avon_earlyonline2016-12-01T00:00:00-08:00
avondale-bepress.field.comments<p>Due to copyright restrictions this article is unavailable for download.</p> <p>Staff and Students of Avondale College may access the full text of this article via a Library PRIMO search <a href="https://avondale-primo.hosted.exlibrisgroup.com/primo-explore/search?vid=AVN&lang=en_US">here</a>.</p>
avondale-bepress.field.custom_citation<p>Li, L., Conway, W., Burns, R., Maeder, M., Puxty, G., Clifford, S., & Yu, H. (2017). Investigation of metal ion additives on the suppression of ammonia loss and CO2 absorption kinetics of aqueous ammonia-based CO2 capture. <em>International</em> <em>Journal of Greenhouse Gas Control, 56, </em>165-172. doi:10.1016/j.ijggc.2016.11.016</p>
avondale-bepress.field.doihttps://doi.org/10.1016/j.ijggc.2016.11.016
avondale-bepress.field.embargo_date2018-07-23T00:00:00Z
avondale-bepress.field.field_of_education01 Natural and Physical Sciences
avondale-bepress.field.for03 CHEMICAL SCIENCES
avondale-bepress.field.issn1750-5836
avondale-bepress.field.journalInternational Journal of Greenhouse Gas Control
avondale-bepress.field.page_numbers165-172
avondale-bepress.field.peer_reviewBefore publication
avondale-bepress.field.publication_date2017-01-01T00:00:00Z
avondale-bepress.field.source_fulltext_urlhttps://doi.org/10.1016/j.ijggc.2016.11.016
avondale-bepress.field.source_publication<p>This article was originally published as:</p> <p>Li, L., Conway, W., Burns, R., Maeder, M., Puxty, G., Clifford, S., & Yu, H. (2017). Investigation of metal ion additives on the suppression of ammonia loss and CO2 absorption kinetics of aqueous ammonia-based CO2 capture. <em>International</em> <em>Journal of Greenhouse Gas Control, 56, </em>165-172. doi:10.1016/j.ijggc.2016.11.016</p> <p>ISSN: 1750-5836</p>
avondale-bepress.field.staff_classificationContract
avondale-bepress.field.volume_number56
avondale-bepress.keywordsCO2 capture; Ammonia loss; Metal ion additives; CO2 absorption rate; Model calculations
avondale-bepress.label97
avondale-bepress.publication-date2017-01-01T00:00:00Z
avondale-bepress.publication-titleScience and Mathematics Papers and Journal Articles
avondale-bepress.statepublished
avondale-bepress.submission-date2018-07-23T20:55:27Z
avondale-bepress.submission-pathsci_math_papers/97
avondale-bepress.titleInvestigation of Metal Ion Additives on the Suppression of Ammonia Loss and CO2 Absorption Kinetics of Aqueous Ammonia-based CO2 Capture
avondale-bepress.typearticle
dc.contributor.authorYu, Hai
dc.contributor.authorClifford, Sarah
dc.contributor.authorPuxty, Graeme
dc.contributor.authorMaeder, Marcel
dc.contributor.authorBurns, Robert
dc.contributor.authorConway, William
dc.contributor.authorLi, Lichun
dc.date.accessioned2023-11-01T00:27:04Z
dc.date.available2023-11-01T00:27:04Z
dc.date.issued2017-01-01
dc.date.submitted2018-07-23T20:55:27Z
dc.description.abstract<p>Aqueous ammonia is an attractive absorbent for the capture of CO<sub>2</sub> from industrial flue gases. However evaporative ammonia loss limits the application of the ammonia-based CO<sub>2</sub> capture process. The use of metal ion additives (where M(II) = Cu(II), Zn(II) and Ni(II)), has been reported previously for the effective suppression of ammonia loss in the post combustion capture of CO<sub>2</sub>. In this study, we have investigated the absorption of CO<sub>2</sub> into various M(II)/NH<sub>3</sub> solutions, the resulting loss of ammonia to evaporation, and have attempted to rationalise the observed effects using an extended chemical model that includes all chemical reactions in solution. The theoretical and experimental investigations suggest that complexation of ammonia by metal ions effectively reduces the concentration of free ammonia, resulting in reduced evaporative loss but also reduced reactivity towards CO<sub>2</sub>. Simple reduction of the total NH<sub>3</sub> concentration to the same concentration of free NH<sub>3</sub> concentration as that obtained by the addition of M(II) showed a similar reduction in the ammonia loss as well as the CO<sub>2</sub> absorption rate. The effects on CO<sub>2</sub> absorption capacity at 25 and 80 °C, cyclic capacity and regeneration energy are also simulated and discussed.</p>
dc.description.versionBefore publication
dc.identifier.citation<p>Li, L., Conway, W., Burns, R., Maeder, M., Puxty, G., Clifford, S., & Yu, H. (2017). Investigation of metal ion additives on the suppression of ammonia loss and CO2 absorption kinetics of aqueous ammonia-based CO2 capture. <em>International</em> <em>Journal of Greenhouse Gas Control, 56, </em>165-172. doi:10.1016/j.ijggc.2016.11.016</p>
dc.identifier.doihttps://doi.org/10.1016/j.ijggc.2016.11.016
dc.identifier.issn1750-5836
dc.identifier.urihttps://research.avondale.edu.au/handle/123456789/12530339
dc.language.isoen_us
dc.provenance<p>This article was originally published as:</p> <p>Li, L., Conway, W., Burns, R., Maeder, M., Puxty, G., Clifford, S., & Yu, H. (2017). Investigation of metal ion additives on the suppression of ammonia loss and CO2 absorption kinetics of aqueous ammonia-based CO2 capture. <em>International</em> <em>Journal of Greenhouse Gas Control, 56, </em>165-172. doi:10.1016/j.ijggc.2016.11.016</p> <p>ISSN: 1750-5836</p>
dc.subjectCO2 capture; Ammonia loss; Metal ion additives; CO2 absorption rate; Model calculations
dc.titleInvestigation of Metal Ion Additives on the Suppression of Ammonia Loss and CO2 Absorption Kinetics of Aqueous Ammonia-based CO2 Capture
dc.typeJournal Article
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