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Article: Substantial global carbon uptake by cement carbonation

TitleSubstantial global carbon uptake by cement carbonation
Authors
Issue Date2016
Citation
Nature Geoscience, 2016, v. 9, n. 12, p. 880-883 How to Cite?
AbstractCalcination of carbonate rocks during the manufacture of cement produced 5% of global CO 2 emissions from all industrial process and fossil-fuel combustion in 2013. Considerable attention has been paid to quantifying these industrial process emissions from cement production, but the natural reversal of the process - carbonation - has received little attention in carbon cycle studies. Here, we use new and existing data on cement materials during cement service life, demolition, and secondary use of concrete waste to estimate regional and global CO 2 uptake between 1930 and 2013 using an analytical model describing carbonation chemistry. We find that carbonation of cement materials over their life cycle represents a large and growing net sink of CO 2, increasing from 0.10 GtC yr â '1 in 1998 to 0.25 GtC yr â '1 in 2013. In total, we estimate that a cumulative amount of 4.5 GtC has been sequestered in carbonating cement materials from 1930 to 2013, offsetting 43% of the CO 2 emissions from production of cement over the same period, not including emissions associated with fossil use during cement production. We conclude that carbonation of cement products represents a substantial carbon sink that is not currently considered in emissions inventories.
Persistent Identifierhttp://hdl.handle.net/10722/334453
ISSN
2023 Impact Factor: 15.7
2023 SCImago Journal Rankings: 5.874
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorXi, Fengming-
dc.contributor.authorDavis, Steven J.-
dc.contributor.authorCiais, Philippe-
dc.contributor.authorCrawford-Brown, Douglas-
dc.contributor.authorGuan, Dabo-
dc.contributor.authorPade, Claus-
dc.contributor.authorShi, Tiemao-
dc.contributor.authorSyddall, Mark-
dc.contributor.authorLv, Jie-
dc.contributor.authorJi, Lanzhu-
dc.contributor.authorBing, Longfei-
dc.contributor.authorWang, Jiaoyue-
dc.contributor.authorWei, Wei-
dc.contributor.authorYang, Keun Hyeok-
dc.contributor.authorLagerblad, Björn-
dc.contributor.authorGalan, Isabel-
dc.contributor.authorAndrade, Carmen-
dc.contributor.authorZhang, Ying-
dc.contributor.authorLiu, Zhu-
dc.date.accessioned2023-10-20T06:48:15Z-
dc.date.available2023-10-20T06:48:15Z-
dc.date.issued2016-
dc.identifier.citationNature Geoscience, 2016, v. 9, n. 12, p. 880-883-
dc.identifier.issn1752-0894-
dc.identifier.urihttp://hdl.handle.net/10722/334453-
dc.description.abstractCalcination of carbonate rocks during the manufacture of cement produced 5% of global CO 2 emissions from all industrial process and fossil-fuel combustion in 2013. Considerable attention has been paid to quantifying these industrial process emissions from cement production, but the natural reversal of the process - carbonation - has received little attention in carbon cycle studies. Here, we use new and existing data on cement materials during cement service life, demolition, and secondary use of concrete waste to estimate regional and global CO 2 uptake between 1930 and 2013 using an analytical model describing carbonation chemistry. We find that carbonation of cement materials over their life cycle represents a large and growing net sink of CO 2, increasing from 0.10 GtC yr â '1 in 1998 to 0.25 GtC yr â '1 in 2013. In total, we estimate that a cumulative amount of 4.5 GtC has been sequestered in carbonating cement materials from 1930 to 2013, offsetting 43% of the CO 2 emissions from production of cement over the same period, not including emissions associated with fossil use during cement production. We conclude that carbonation of cement products represents a substantial carbon sink that is not currently considered in emissions inventories.-
dc.languageeng-
dc.relation.ispartofNature Geoscience-
dc.titleSubstantial global carbon uptake by cement carbonation-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1038/ngeo2840-
dc.identifier.scopuseid_2-s2.0-85001105680-
dc.identifier.volume9-
dc.identifier.issue12-
dc.identifier.spage880-
dc.identifier.epage883-
dc.identifier.eissn1752-0908-
dc.identifier.isiWOS:000390478700012-

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