Szczegóły publikacji
Opis bibliograficzny
Carbonation of high-Ca fly ashes under flue gas conditions: implications for their valorization in the construction industry / Kwon Rausis, Agnieszka ĆWIK, Ignasi Casanova, Katarzyna ZARĘBSKA // Crystals [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 2073-4352. — 2021 — vol. 11 iss. 11 art. no. 1314, s. 1–13. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 11–13, Abstr. — Publikacja dostępna online od: 2021-10-28. — A. Ćwik - dod. afiliacja: Institute of Energy Technologies; Barcelona Research Center in Multiscale Science and Engineering, Campus Diagonal Besòs, Universitat Politècnica de Catalunya, Barcelona, Spain
Autorzy (4)
- Rausis Kwon
- AGHĆwik Agnieszka
- Casanova Ignasi
- AGHZarębska Katarzyna
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 137365 |
|---|---|
| Data dodania do BaDAP | 2021-10-29 |
| Tekst źródłowy | URL |
| DOI | 10.3390/cryst11111314 |
| Rok publikacji | 2021 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Crystals |
Abstract
The utilization of high-calcium fly ashes (HCFA) from coal-fired power plants in the construction industry is problematic, since their high free lime contents can lead to durability problems. In this research, the carbonation of a high-CaO fly ash has been carried out using simulated flue gas and concentrated CO2, with the aim to assess the valorization potential of such materials in the construction industry. The results show that, at 7 bars total pressure, an up to 36% carbonation efficiency can be achieved in just 30 min when pure CO2 is used; a comparable result with flue gas requires about 4 h of reaction. On the other hand, experiments carried out at atmospheric pressure show significantly different carbonation efficiencies depending on the CO2 concentration of the gas used. All experiments resulted in a substantial reduction in the original free lime content, and after reaction times of 4 h (at atmospheric pressure) and pressures of 7 bars (for any reaction time >30 min), the final free lime values were low enough to comply with the requirements of European Standards for their utilization as additions in cement.
