CO2 mineralization of bottom ash and decarbonation of waste-to-energy plants
Following the Paris agreements on climate change, CO2 emissions from large emitters have become the focus of particular attention. With a national average of 0.4 kg of fossil CO2 emitted per kg of Municipal Solid Waste (MSW) incinerated, bottom ash (BA) residues from waste-to-energy (WtE) plants in...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-09-01
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| Series: | Journal of CO2 Utilization |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2212982025001532 |
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| author | Carine Julcour Amar Dandach Laurent Cassayre Florent Bourgeois |
| author_facet | Carine Julcour Amar Dandach Laurent Cassayre Florent Bourgeois |
| author_sort | Carine Julcour |
| collection | DOAJ |
| description | Following the Paris agreements on climate change, CO2 emissions from large emitters have become the focus of particular attention. With a national average of 0.4 kg of fossil CO2 emitted per kg of Municipal Solid Waste (MSW) incinerated, bottom ash (BA) residues from waste-to-energy (WtE) plants in France are possible candidates for CO2 mitigation by mineralization, considering BA as feedstock for CO2 capture and production of alternative construction materials.BA samples collected from an operating WtE plant in the suburb of Lyon were carbonated under slurry or humidity-controlled conditions. It was found that 35 kg of CO2 could be captured per tonne of minus 100 μm ground BA in 30–120 min at ambient conditions. A water pre-washing stage was necessary to prevent the production of H2 by oxidation of Al metal during carbonation and removed chlorides and sulfates that are undesirable in construction materials.While it is argued that CO2 mineralization is of limited interest for mitigating the CO2 emissions of WtE facilities, a conservative analysis of a production system that associates a WtE plant and a cement plant reveals that the net carbon footprint of such a combined production system could be reduced by 15 % with an added mineralization process. |
| format | Article |
| id | doaj-art-c54e174d7a0a4240ae5fce28a6b18eb8 |
| institution | Kabale University |
| issn | 2212-9839 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of CO2 Utilization |
| spelling | doaj-art-c54e174d7a0a4240ae5fce28a6b18eb82025-08-20T03:32:24ZengElsevierJournal of CO2 Utilization2212-98392025-09-019910316910.1016/j.jcou.2025.103169CO2 mineralization of bottom ash and decarbonation of waste-to-energy plantsCarine Julcour0Amar Dandach1Laurent Cassayre2Florent Bourgeois3Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INP, UPS, Toulouse, FranceLaboratoire de Génie Chimique, Université de Toulouse, CNRS, INP, UPS, Toulouse, FranceLaboratoire de Génie Chimique, Université de Toulouse, CNRS, INP, UPS, Toulouse, FranceCorresponding author.; Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INP, UPS, Toulouse, FranceFollowing the Paris agreements on climate change, CO2 emissions from large emitters have become the focus of particular attention. With a national average of 0.4 kg of fossil CO2 emitted per kg of Municipal Solid Waste (MSW) incinerated, bottom ash (BA) residues from waste-to-energy (WtE) plants in France are possible candidates for CO2 mitigation by mineralization, considering BA as feedstock for CO2 capture and production of alternative construction materials.BA samples collected from an operating WtE plant in the suburb of Lyon were carbonated under slurry or humidity-controlled conditions. It was found that 35 kg of CO2 could be captured per tonne of minus 100 μm ground BA in 30–120 min at ambient conditions. A water pre-washing stage was necessary to prevent the production of H2 by oxidation of Al metal during carbonation and removed chlorides and sulfates that are undesirable in construction materials.While it is argued that CO2 mineralization is of limited interest for mitigating the CO2 emissions of WtE facilities, a conservative analysis of a production system that associates a WtE plant and a cement plant reveals that the net carbon footprint of such a combined production system could be reduced by 15 % with an added mineralization process.http://www.sciencedirect.com/science/article/pii/S2212982025001532DecarbonationWaste-to-Energy plantCO2 mineralizationMunicipal Solid WasteBottom ash |
| spellingShingle | Carine Julcour Amar Dandach Laurent Cassayre Florent Bourgeois CO2 mineralization of bottom ash and decarbonation of waste-to-energy plants Journal of CO2 Utilization Decarbonation Waste-to-Energy plant CO2 mineralization Municipal Solid Waste Bottom ash |
| title | CO2 mineralization of bottom ash and decarbonation of waste-to-energy plants |
| title_full | CO2 mineralization of bottom ash and decarbonation of waste-to-energy plants |
| title_fullStr | CO2 mineralization of bottom ash and decarbonation of waste-to-energy plants |
| title_full_unstemmed | CO2 mineralization of bottom ash and decarbonation of waste-to-energy plants |
| title_short | CO2 mineralization of bottom ash and decarbonation of waste-to-energy plants |
| title_sort | co2 mineralization of bottom ash and decarbonation of waste to energy plants |
| topic | Decarbonation Waste-to-Energy plant CO2 mineralization Municipal Solid Waste Bottom ash |
| url | http://www.sciencedirect.com/science/article/pii/S2212982025001532 |
| work_keys_str_mv | AT carinejulcour co2mineralizationofbottomashanddecarbonationofwastetoenergyplants AT amardandach co2mineralizationofbottomashanddecarbonationofwastetoenergyplants AT laurentcassayre co2mineralizationofbottomashanddecarbonationofwastetoenergyplants AT florentbourgeois co2mineralizationofbottomashanddecarbonationofwastetoenergyplants |