Elsevier

Journal of CO2 Utilization

Volume 40, September 2020, 101203
Journal of CO2 Utilization

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

https://doi.org/10.1016/j.jcou.2020.101203Get rights and content
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open access

Highlights

  • Carbon capture and utilization (CCU) via CO2 mineralization.

  • Biomass fly ash is suitable for direct carbonation in construction application.

  • CO2 mineralization during the hydration reactions of fly ash.

  • Improved compressive strength of hydrated fly ash.

Abstract

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.

Keywords

Biomass fly ash
Bio ash
Carbon capture and utilization
Fluidized bed combustion
Wood ash
Woody ash

Cited by (0)

Katja Ohenoja Dr. (Eng.) Katja Ohenoja is senior research fellow and adjunct professor at University of Oulu. She has worked with inorganic binders and industrial side streams (mainly biomass fly ashes) since the beginning of 2014 as a responsible researcher or project manager. Before that, she finished her thesis about nanogrinding of industrial minerals (2011–2014). She is currently co-supervising 6 PhD students, and has 31 scientific publications with 236 citations and h-index of 8.

Jouni Rissanen MSc. (Eng.) Jouni Rissanen is finalizing his doctoral thesis about utilization of biomass fly ash in concrete in April 2020. He has 5 publications and 2 personal research grants.

Paivo Kinnunen PhD Paivo Kinnunen is senior research fellow at University of Oulu. Paivo graduated from the University of Michigan with PhD in Applied Physics in 2011. After his graduation he worked in a start-up company, Life Magnetics, Inc. in Ann Arbor, USA as a co-inventor and lead scientist, and as a postdoctoral researcher at University of Oulu, before his appointment to the current position in June 2017. He has 64 scientific publications with 794 citations and h-index of 15.

Mirja Illikainen Prof. Dr. (Eng.) Mirja Illikainen is head of the Fibre and particle engineering reserach unit. She has supervised or co-supervised 12 PhD students, and currently she is supervising 11 PhD students and 9 postdoctoral researchers. She has several relevant previous activities related to the topic such as ERA-MIN, H2020, H2020 MS-COFUND, and MSC-ITN. She has 12 personal grants and awards, 132 publications and h-index of 17, and 2 patents utilized by industrial partners.