University of Oulu

Katja Ohenoja, Jouni Rissanen, Paivo Kinnunen, Mirja Illikainen, Direct carbonation of peat-wood fly ash for carbon capture and utilization in construction application, Journal of CO2 Utilization, Volume 40, 2020, 101203, ISSN 2212-9820,

Direct carbonation of peat-wood fly ash for carbon capture and utilization in construction application

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Author: Ohenoja, Katja1; Rissanen, Jouni1; Kinnunen, Päivö1;
Organizations: 1Fibre and Particle Engineering Research Group, University of Oulu, Erkki Koiso-Kanttilan katu 5, 90570, Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.6 MB)
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Language: English
Published: Elsevier, 2020
Publish Date: 2020-06-17


Carbon dioxide (CO₂) emissions from industrial processes contribute largely to the greenhouse effect and climate change. One of these industries is the cement industry, which contributes around 8% of CO₂ emissions caused by mankind. Two promising and interesting ways to reduce CO₂ emission are the utilization of alternative cementitious materials and carbon capture and utilization through CO₂ mineralization. In this study, peat-wood fly ashes from fluidized bed combustion were used as a construction material for mineral carbonation. A self-hardening characteristic of this type of fly ash was utilized, and simultaneous carbonation and hydration reactions were studied. The study showed that fly ashes from the fluidized bed combustion of peat and wood could be used to capture and mineralize CO₂ during hydration reactions. At the same time, CO₂ could improve the strength of self-hardened fly ashes. One interesting future possibility is fly ash tile production at energy plants: fly ashes can be used to capture CO₂ from flue gases, thus improving the strength of produced tiles.

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Series: Journal of CO₂ utilization
ISSN: 2212-9820
ISSN-E: 2212-9839
ISSN-L: 2212-9820
Volume: 40
Article number: 101203
DOI: 10.1016/j.jcou.2020.101203
Type of Publication: A1 Journal article – refereed
Field of Science: 212 Civil and construction engineering
215 Chemical engineering
216 Materials engineering
218 Environmental engineering
Funding: This work was conducted under the auspices of the ARCTIC-ecocrete project, which is supported by the Interreg Nord EU program and the Regional Council of Lapland.
Copyright information: © 2020 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (