Design and test of a novel three-stage batch reactor for the accelerated carbonation of fresh concrete slurry waste
Concrete slurry waste (CSW) accounts for approximately 1–4 % of total concrete production. It is generated from washing processes, surplus concrete, and surface treatments such as grinding. Due to its fresh state and high cement content, CSW has a significant CO2 uptake capacity. This study focuses...
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Elsevier
2025-09-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025024880 |
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| author | Svenja Vogt Felix Brück Harald Weigand |
| author_facet | Svenja Vogt Felix Brück Harald Weigand |
| author_sort | Svenja Vogt |
| collection | DOAJ |
| description | Concrete slurry waste (CSW) accounts for approximately 1–4 % of total concrete production. It is generated from washing processes, surplus concrete, and surface treatments such as grinding. Due to its fresh state and high cement content, CSW has a significant CO2 uptake capacity. This study focuses on the design and test of a novel laboratory-scale reactor for the accelerated carbonation of fresh CSW. The reactor allows for time-resolved visualization of key process parameters. The slurry carbonation process was evaluated in batch mode using a model concrete slurry with a liquid-to-solid ratio of 100 and using reverse osmosis water as a reagent blank. Thermogravimetric-mass spectrometry analysis revealed CO2 uptake values of 15.64 wt.% and 17.65 wt.% in the model slurry after 30 min of carbonation treatment. Further carbonation-induced changes were determined by comparative analysis of the carbonated and native cement using X-ray diffractometry and X-ray fluorescence spectrometry. The reactor design and the results of the study are intended to optimize CO2 sequestration in CSW and thus contribute to sustainable waste management in the concrete industry. |
| format | Article |
| id | doaj-art-a7c447afed3c49cd92a0807b9ae3b4b8 |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-a7c447afed3c49cd92a0807b9ae3b4b82025-08-20T03:58:36ZengElsevierResults in Engineering2590-12302025-09-012710641810.1016/j.rineng.2025.106418Design and test of a novel three-stage batch reactor for the accelerated carbonation of fresh concrete slurry wasteSvenja Vogt0Felix Brück1Harald Weigand2Corresponding author.; THM University of Applied Sciences Wiesenstr. 14, D-35390 Gießen, GermanyTHM University of Applied Sciences Wiesenstr. 14, D-35390 Gießen, GermanyTHM University of Applied Sciences Wiesenstr. 14, D-35390 Gießen, GermanyConcrete slurry waste (CSW) accounts for approximately 1–4 % of total concrete production. It is generated from washing processes, surplus concrete, and surface treatments such as grinding. Due to its fresh state and high cement content, CSW has a significant CO2 uptake capacity. This study focuses on the design and test of a novel laboratory-scale reactor for the accelerated carbonation of fresh CSW. The reactor allows for time-resolved visualization of key process parameters. The slurry carbonation process was evaluated in batch mode using a model concrete slurry with a liquid-to-solid ratio of 100 and using reverse osmosis water as a reagent blank. Thermogravimetric-mass spectrometry analysis revealed CO2 uptake values of 15.64 wt.% and 17.65 wt.% in the model slurry after 30 min of carbonation treatment. Further carbonation-induced changes were determined by comparative analysis of the carbonated and native cement using X-ray diffractometry and X-ray fluorescence spectrometry. The reactor design and the results of the study are intended to optimize CO2 sequestration in CSW and thus contribute to sustainable waste management in the concrete industry.http://www.sciencedirect.com/science/article/pii/S2590123025024880Industrial carbon managementCCUSCDRConcrete wasteCSW |
| spellingShingle | Svenja Vogt Felix Brück Harald Weigand Design and test of a novel three-stage batch reactor for the accelerated carbonation of fresh concrete slurry waste Results in Engineering Industrial carbon management CCUS CDR Concrete waste CSW |
| title | Design and test of a novel three-stage batch reactor for the accelerated carbonation of fresh concrete slurry waste |
| title_full | Design and test of a novel three-stage batch reactor for the accelerated carbonation of fresh concrete slurry waste |
| title_fullStr | Design and test of a novel three-stage batch reactor for the accelerated carbonation of fresh concrete slurry waste |
| title_full_unstemmed | Design and test of a novel three-stage batch reactor for the accelerated carbonation of fresh concrete slurry waste |
| title_short | Design and test of a novel three-stage batch reactor for the accelerated carbonation of fresh concrete slurry waste |
| title_sort | design and test of a novel three stage batch reactor for the accelerated carbonation of fresh concrete slurry waste |
| topic | Industrial carbon management CCUS CDR Concrete waste CSW |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025024880 |
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