| Naslov: | Sequestration capacity of bio-based ashes and influence of carbonation on the leaching behavior depending on their mineralogical composition |
|---|
| Avtorji: | ID Tominc, Sara (Avtor)
ID Pavlin, Majda (Avtor)
ID Žibret, Lea (Avtor)
ID Ducman, Vilma (Avtor)
ID Lisbeth M., Ottosen (Avtor) |
|---|
| Datoteke: |  URL - Izvorni URL, za dostop obiščite https://doi.org/10.1016/j.ceramint.2025.11.229
URL - Raziskovalni podatki, za dostop obiščite http://hdl.handle.net/20.500.12556/DiRROS-23902
 PDF - Predstavitvena datoteka, prenos (5,37 MB)
MD5: 3868F91F2038D116D58932CA539B8D04
|
|---|
| Jezik: | Angleški jezik |
|---|
| Tipologija: | 1.01 - Izvirni znanstveni članek |
|---|
| Organizacija: |  ZAG - Zavod za gradbeništvo Slovenije
|
|---|
| Povzetek: | Mineral CO2 sequestration is a promising carbon capture and storage approach based on the chemical reaction of CO2 with alkaline materials containing Ca- and Mg-rich (hydr)oxides and silicates. This results in the formation of relatively insoluble and storable carbonates. This study investigates six ashes of different origins and chemical compositions to assess their CO2 sequestration potential and leaching behavior, offering insights into their environmental impact and potential risks. The carbonation experiments were conducted under controlled laboratory conditions and the CO2 sequestration capacity was quantified using a pressure calcimeter, supported by thermogravimetric analysis. Wood ashes and ash from the co-combustion of biomass from a paper mill showed the highest carbonation potential, with CO2 sequestration capacities between 344.8 and 432.3 g CO2 per kg of ash and carbonation efficiencies between 82.4 % and 94.4 %. In addition to the high sequestration capacity of the ashes, carbonation was found to affect the leaching behavior of the ash in the environment by changing its mineralogical composition. The process consistently reduced pH and generally decreased the leaching of certain trace elements, except for Mo, and Cr. Nevertheless, the reduction in the leachability of several elements suggests a partial environmental benefit of carbonation. The findings highlight the dual functionality of the carbonation: it provides a viable route for the permanent binding of CO2 and can enhance the stabilization of industrial residues. However, the persistence of metal leaching indicates that its overall effectiveness in mitigating environmental risks associated with residue disposal or reuse remains material-dependent. |
|---|
| Ključne besede: | enforced carbonation, maximum sequestration capacity, leaching, heavy metals, mineralogy, bio-based ash |
|---|
| Status publikacije: | Objavljeno |
|---|
| Verzija publikacije: | Objavljena publikacija |
|---|
| Datum objave: | 17.11.2025 |
|---|
| Založnik: | Elsevier |
|---|
| Leto izida: | 2025 |
|---|
| Št. strani: | str. 65512-65523 |
|---|
| Številčenje: | Vol. 51, Issue 30, Part C |
|---|
| PID: | 20.500.12556/DiRROS-25200  |
|---|
| UDK: | 54 |
|---|
| ISSN pri članku: | 1873-3956 |
|---|
| DOI: | 10.1016/j.ceramint.2025.11.229 |
|---|
| COBISS.SI-ID: | 258501635 |
|---|
| Avtorske pravice: | © 2025 The Authors |
|---|
| Opomba: |
|
|---|
| Datum objave v DiRROS: | 13.01.2026 |
|---|
| Število ogledov: | 112 |
|---|
| Število prenosov: | 83 |
|---|
| Metapodatki: |    |
|---|
|
:
|
Kopiraj citat |
|---|
| | | | Objavi na: |  |
|---|
Postavite miškin kazalec na naslov za izpis povzetka. Klik na naslov izpiše
podrobnosti ali sproži prenos. |
