Carbon Capture Science & Technology最新文献

{"title":"Additive manufacturing of architected Ca(OH)2 monoliths for accelerated CO2 mineralization","authors":"Injun Park ,&nbsp;Sunwoo Kim ,&nbsp;Byeongju Jeon ,&nbsp;Huiryung Heo ,&nbsp;Siyoung Q. Choi ,&nbsp;Jay H. Lee ,&nbsp;Dong-Yeun Koh","doi":"10.1016/j.ccst.2026.100568","DOIUrl":"10.1016/j.ccst.2026.100568","url":null,"abstract":"<div><div>Effective CCU technologies demand robust, scalable sorbents with high CO₂ selectivity and capacity. While calcium hydroxide (Ca(OH)₂) offers high CO₂ uptake via mineral carbonation, its practical application is hindered by slow reaction kinetics and difficulties in forming mechanically stable, structured beds. Here, we report a direct ink writing (DIW) approach to fabricate 3D-printed Ca(OH)₂ monoliths using water-based inks formulated with carboxymethyl cellulose (CMC). Under humid conditions (RH95, 1–10 mol % CO₂), the monolith achieves &gt;99 % conversion to calcium carbonate, with similarly strong performance maintained at 400 ppm CO₂ relevant to direct air capture (DAC). The structured sorbent also exhibits extremely low pressure drop (∼2 Pa/cm), making it suitable for scaled-up applications. A techno-economic analysis (TEA) for the DAC case, incorporating parallel nozzle printing, shows that the levelized cost of capture (LCOC) can be reduced to 339 US$/tCO₂, with break-even scenarios attainable through carbon subsidies or high-value reuse of the monolith reuse. Overall, this work establishes a dry, scalable pathway for fabricating reactive structured Ca(OH)₂ sorbents for CCU applications.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100568"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145972758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Persulfate–derived porous wollastonite granules for accelerated CO2 mineralization and suitability for aggregate applications","authors":"Prince Allah,&nbsp;Tero Luukkonen,&nbsp;Paivo Kinnunen,&nbsp;Priyadharshini Perumal","doi":"10.1016/j.ccst.2026.100571","DOIUrl":"10.1016/j.ccst.2026.100571","url":null,"abstract":"<div><div>Mineral carbonation technology is a promising solution for CO₂ capture and utilization. To achieve large scale application of the technology, the challenges related to CO₂ diffusion and passivation by carbonate precipitation must be overcome. In this work, we demonstrate a route to high volume CO₂ capture by granulation and carbonation using wollastonite, polyvinyl alcohol (pva) and potassium persulfate. The wollastonite powder was granulated with 10% pva solution, incorporating 10–100 wt% of granulation fluid of potassium persulfate as pore–forming agent. The utility of some granules was extended by esterification reaction in citric acid solution. The granules were carbonated in a pressured reactor (10 bar, 100 °C) and the influence of pore–forming amount on carbonate passivation and CO₂ diffusion was studied by thermogravimetry, optical, electron microscopy and N₂ adsorption. The experiments revealed that 20% persulfate produced highly porous granules with an interconnected pore structure that reduced carbonate passivation and captured the highest amount of CO₂ (44mol%). Comparatively, mix designs with 0, 10 and 100 wt% persulfate showed low carbonation due to poor CO₂ diffusion attributed to surface passivation by carbonates and sulfates. Additionally, pore structure and surface modelling using Frankel–Halsey–Hill (FHH) fractal analysis concludes that 20% persulfate in both fresh and esterified granules produced a less tortuous and uniform pore structure with high interconnectivity, aiding CO₂ diffusion within the granules which resulted in high amount of carbonation products while preventing passivation. After carbonation, the aggregates maintained high strength and light weight, confirming their high potential as a high-volume CO₂ negative artificial lightweight aggregate in construction.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100571"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146073650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid monitoring framework for geological CO2 storage: Comparative insights from nuclear magnetic resonance (NMR) and conventional techniques","authors":"Zahrah Ghannam ,&nbsp;Mazin Osman ,&nbsp;Omer Mohamed Bakri ,&nbsp;Mohamed Mahmoud ,&nbsp;Muhammad Shahzad Kamal ,&nbsp;Rahul Gajbhiye ,&nbsp;Ahmed Abdulhamid Mahmoud","doi":"10.1016/j.ccst.2025.100561","DOIUrl":"10.1016/j.ccst.2025.100561","url":null,"abstract":"<div><div>Effective tracking of the geological carbon dioxide (CO₂) storage is very important in ensuring the safety of the environment and adherence to storage rules. This review discusses the classic geophysical techniques such as 4D seismic, electromagnetic (EM), and gravimetry and their abilities are compared to nuclear magnetic resonance (NMR), which is an emerging technology that improves monitoring on a microscopic scale. Conventional methods are appropriate to map the movement of plumes and structural variations but are not good enough to see important processes such as residual trapping, changes in wettability, and fluid dynamics at the pore-scale. Conversely, NMR quantitatively describes fluid interactions and phase behavior at the pore level and is able to give quantitative information on CO₂ saturation and trapping processes.</div><div>This review shed light on how NMR, under a combination with conventional geophysical methods, can form a hybrid monitoring system that can offer the pore-scale accuracy of the monitoring approach, and the field-scale extent of the monitoring framework. Through machine learning, built-in workflows now can combine seismic, pressure, and fluid chemistry data increasing predictive accuracy and uncertainty quantification. This hybrid monitoring method will greatly enhance the credibility of the CO₂ storage measurements through the real-time identification of the possible leakage and the reservoir maintenance. Future CO₂ storage projects can realize this by placing NMR in greater monitoring networks.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100561"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbon dioxide (CO2) capture and utilization technologies: New developments toward net-zero emissions and climate-change mitigation","authors":"Basiru O. Yusuf ,&nbsp;Abdulrahman A. Abdulrasheed ,&nbsp;Hambali U. Hambali ,&nbsp;Afeez Gbadamosi ,&nbsp;Adeyinka S. Yusuff ,&nbsp;Funsho Afolabi ,&nbsp;Mansur Aliyu ,&nbsp;Saheed A. Ganiyu","doi":"10.1016/j.ccst.2026.100589","DOIUrl":"10.1016/j.ccst.2026.100589","url":null,"abstract":"<div><div>The accelerating rise in anthropogenic carbon dioxide (CO₂) emissions poses a critical threat to global climate stability, necessitating scalable and technologically robust mitigation strategies. Carbon capture and utilization (CCU) have emerged as a key approach for reducing emissions while simultaneously transforming CO₂ into fuels, chemicals, and value-added products. This review provides a comprehensive and integrated assessment of recent advances in CO₂ capture technologies, advanced capture materials, and utilization pathways, with emphasis on their combined role in influencing conversion efficiency, material performance, and system-level techno-economic outcomes to support net-zero and circular-carbon objectives. Contemporary capture approaches, including pre-combustion, post-combustion, oxy-fuel combustion, and direct air capture, are critically examined alongside emerging materials such as functionalized carbons, graphene-based composites, zeolites, metal–organic frameworks, and hybrid sorbent–catalyst systems. The review further evaluates state-of-the-art CO₂ utilization routes, including dry reforming of methane, bi- and oxy-reforming, CO₂-assisted dehydrogenation, and catalytic hydrogenation to fuels and chemicals, highlighting how material and capture performance directly affect conversion efficiency and process integration. In addition, this review incorporates a dedicated techno-economic assessment (TEA) of CCU technologies, critically evaluating capital and operating costs, energy requirements, process efficiency, scalability, and market competitiveness across major capture and utilization pathways. Key scientific, technological, and economic barriers hindering large-scale CCU deployment are identified, including capture–conversion coupling, energy intensity, catalyst durability, and the interdependence of material selection and process performance. Finally, future research directions are outlined to accelerate the transition of CCU from laboratory-scale innovations to commercially viable, integrated carbon management solutions. By synthesizing advances in CO₂ capture, utilization, and techno-economic performance within a unified framework, this work provides strategic insights for advancing CCU as a practical pathway for emissions reduction and sustainable chemical production.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100589"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147385303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering concrete as a carbon sink for sustainable infrastructure","authors":"Chaolin Fang ,&nbsp;Varenyam Achal","doi":"10.1016/j.ccst.2025.100558","DOIUrl":"10.1016/j.ccst.2025.100558","url":null,"abstract":"<div><div>Concrete offers a unique opportunity to function as a scalable carbon sink by integrating physicochemical, mechanochemical, microbial, and magnesium-based pathways of CO₂ sequestration. This review synthesizes recent advances ranging from accelerated carbonation curing and pre-carbonated supplementary materials to bio-mediated mineralization and MgO-derived binders. Emerging applications—including 3D printing and biochar-enhanced aggregates—demonstrate measurable CO₂ uptake alongside mechanical and durability benefits. Life-cycle assessments consistently indicate 10–50% reductions in global-warming potential, yet challenges remain in scaling, energy demand, and long-term stability. Distinct from earlier reviews, this work unites mechanistic insights with industrial case studies and technoeconomic analysis to provide a roadmap for deploying carbon-sequestering concretes at scale. By coupling materials science, biotechnology, and digital monitoring with supportive policy frameworks, concrete can evolve from a major emitter into a durable carbon sink within circular-economy construction.</div><div><strong><em>Tweetable abstract:</em></strong> This review shows how physicochemical, mechanochemical, biological and Mg-based pathways can turn concrete from a major CO₂ source into a durable, scalable carbon sink.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100558"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy-optimised cryogenic CO2 capture for cement production decarbonisation: process design and techno-economic analysis","authors":"Leonardo Varnier ,&nbsp;Federico d’Amore ,&nbsp;Bart de Groot ,&nbsp;Fabrizio Bezzo","doi":"10.1016/j.ccst.2025.100563","DOIUrl":"10.1016/j.ccst.2025.100563","url":null,"abstract":"<div><div>Achieving net-zero emissions in the cement sector requires the development of effective carbon capture technologies to address process-related emissions from limestone calcination. While much of the current research and applications focus on more conventional methods such as chemical absorption and oxyfuel, cryogenic CO₂ capture offers potential advantages in energy efficiency, capture rate, and product purity, though it remains underexplored at an industrial scale.</div><div>This study presents a comprehensive assessment of cryogenic CO₂ capture for cement applications in the EU, including thermodynamic modelling, process design and optimisation, and techno-economic analysis. Two process configurations targeting 90% and 95% capture at 99.9%_mass CO₂ purity are benchmarked. The 90% capture design achieves an energy penalty of 1.19 MJ_el/kg_CO₂, corresponding to a threefold increase in electricity consumption compared to an unabated cement plant. Sensitivity analysis demonstrates consistent energy performance across a 17-28%_mol range of flue gas compositions. Increasing the capture rate from 90% to 95% maintains the energy penalty nearly constant (1.19-1.21 MJ_el/kg_CO₂), with only marginal economic impact. At 95% capture, the incremental cost of clinker production rises by 5% compared to 90% capture, while the higher CO₂ avoidance yields a similar cost of avoided CO₂ (127-128 €/t_CO₂).</div><div>From an economic perspective, cryogenic capture significantly outperforms conventional MEA-based capture, while remaining slightly less competitive than oxyfuel and calcium looping under current EU energy mix conditions. Overall, cryogenic capture emerges as an energy-efficient and economically viable post-combustion option for cement industry decarbonisation, with the added benefit of delivering a high-purity CO₂ stream suitable for storage or utilisation.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100563"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145921005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Machine learning–based multi-objective optimisation of low-carbon and profitable hydrogen and diesel production from non-recycled municipal plastic waste: An integrated life cycle assessment and cost–benefit analysis","authors":"Bauyrzhan Biakhmetov ,&nbsp;Galymzhan Tasbolat ,&nbsp;Yue Li ,&nbsp;Qunshan Zhao ,&nbsp;Abay Dostiyarov ,&nbsp;David Flynn ,&nbsp;Peng Jiang ,&nbsp;Siming You","doi":"10.1016/j.ccst.2026.100586","DOIUrl":"10.1016/j.ccst.2026.100586","url":null,"abstract":"<div><div>Sustainable plastic waste management is essential for net zero trajectory, potentially transforming the sector from an emissions source to a circular asset. MPWs (Municipal Plastic Wastes) that are not mechanically recycled can go through pyrolysis-based chemical recycling to produce hydrogen and diesel. There is limited understanding about the optimal configuration and design of pyrolysis-based chemical recycling of plastic waste. Associated attempts to optimise the recycling is rare. In this study, a reliable optimisation framework incorporating machine learning, life cycle assessment and cost-benefit analysis was developed for the design of the pyrolysis of Non-Recycled Municipal Plastic Waste (NMPW). Specifically, the global warming potential (GWP) and net-present value (NPV) of 900 diesel and hydrogen-producing scenarios for the pyrolysis of NMPW were calculated. Associated transportation and pyrolysis process were modelled using ArcGIS Pro and Aspen Plus, respectively. The long short-term memory recurrent neural network (LSTM-RNN) was applied to define temporal dependencies and dynamics of the system, which was integrated with Monte Carlo simulations to expand scenarios from 900 to 700,000. A Pareto curve was derived from the GWPs and NPVs, from which the optimal scenario in terms of environmental and economic performance was identified based on the comparison of two multi-criteria decision-making approaches, i.e., TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) and LINMAP (Linear Programming Technique for Multidimensional Analysis of Preference). The solutions by TOPSIS and LINMAP achieved GWPs of -2,570.42 and -1,025.28 kg CO₂-eq per tonne NMPW, and NPVs of £300.32 and £-1,402.92 per tonne NMPW, respectively. Thus, the TOPSIS scenario is preferable to the LINMAP scenario due to its lower carbon footprint and higher economic feasibility. This study showed that the proposed optimisation framework has the capacity to facilitate the design of pyrolysis-based processing of NMPW that is profitable and carbon-saving. Such systems could be deployed widely across the UK, where a large share of NMPW is currently either landfilled or incinerated.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100586"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147385194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Warm gas carbon dioxide capture from the anode off-gas in solid oxide fuel cell-gas turbine hybrid power generation systems: A technoeconomic investigation considering economies-of-scale","authors":"Yee Lee Chen ,&nbsp;Praneet Atul Chotalia ,&nbsp;Fabian Rosner","doi":"10.1016/j.ccst.2025.100562","DOIUrl":"10.1016/j.ccst.2025.100562","url":null,"abstract":"<div><div>The thermodynamic and economic performance of a warm gas pressure swing adsorption (PSA) technology for carbon dioxide (CO₂) capture directly from the anode off-gas in a solid oxide fuel cell (SOFC)-gas turbine (GT) hybrid power generation system is investigated. Warm gas CO₂ capture provides advantages over ambient temperature CO₂ capture by retaining water vapor in the anode off-gas, simplifying heat integration and preserving higher mass flows through the turbine, maximizing energy efficiency and downstream power generation. Four cases of natural gas (NG)-powered SOFC-GT hybrid plants are compared: 10 MW and 50 MW systems without carbon capture, and 50 MW and 100 MW systems with carbon capture. At the 50 MW scale, the efficiency of the system without carbon capture achieves 75.32 %-LHV and the system with carbon capture achieves 68.22 %-LHV. This decrease in efficiency is governed by the loss of mass that moves through the turbine and the energy penalty associated with the heat needed for regeneration. The cost-of-capture of the warm gas PSA system is $74.87 (with TS&amp;M) or $46.18 (without TS&amp;M) per metric tonne of CO₂. Efficiency improvements due to scaleup are marginal, nevertheless, the larger-scale hybrids are shown to be substantially more cost-effective. Comparing the 50 MW hybrid with carbon capture to the 100 MW hybrid, the specific plant cost decreases by 4.7 % and the cost of electricity decreases by 5.4 %. The analysis establishes warm gas PSA as a promising approach for integrating efficient and economic carbon capture into SOFC-GT hybrid power generation systems.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100562"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146073651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decoding the N-doping mechanism for enhanced CO2 adsorption on biochar","authors":"Shuo Xiang ,&nbsp;Jun-Long Li ,&nbsp;Tie Wu ,&nbsp;Lian-Peng Li ,&nbsp;Mian Hu ,&nbsp;Jun Zhao ,&nbsp;Zhong-Ting Hu ,&nbsp;Zhiyan Pan","doi":"10.1016/j.ccst.2026.100581","DOIUrl":"10.1016/j.ccst.2026.100581","url":null,"abstract":"<div><div>The growing demand for efficient carbon capture technologies has led to the exploration of biochar as a promising material for CO₂ adsorption, particularly through modifications such as nitrogen doping to enhance its performance. In this study, a series of biochars were prepared using different types of amine reagents and varying amounts of nitrogen doping. The highest adsorption capacity, 4.99 mmol g^-1, was achieved at 25 °C and 1.6 MPa when ethylenediamine was employed as the nitrogen source, with a mass ratio of the amine reagent to biochar of 1.2. Correlation analysis indicated that both physical and chemical adsorption significantly influenced CO₂ adsorption capacity. Additionally, by constructing biochar models with varying nitrogen contents and different nitrogen doping forms, theoretical calculations revealed that nitrogen doping could enhance the adsorption energy between CO₂ and biochar. This improvement in adsorption performance was more pronounced with higher nitrogen content. In this work, not only N-doped biochar with excellent CO₂ adsorption performance was prepared from waste biomass, but also the promotion mechanism of N-doped was revealed in detail by combining theoretical calculations and experiments.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100581"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146169943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbonation behavior of reactivated recycled concrete fines containing residual sand: Effects of Ca/Si ratio adjustment and activation temperature","authors":"Yutong Ju ,&nbsp;Ye Li ,&nbsp;Xiangping Xian ,&nbsp;Tiejun Liu","doi":"10.1016/j.ccst.2025.100557","DOIUrl":"10.1016/j.ccst.2025.100557","url":null,"abstract":"<div><div>The valorization of recycled concrete fines (RCF) into reactive binders offers a sustainable solution for mitigating construction waste and carbon emissions. However, embedded sand particles hinder phase development during thermal activation. This study explores thermally activated sand-containing RCF by adjusting calcium-to-silicon ratio via limestone addition to produce reactivated cementitious materials (RCM). Carbonation-cured RCMs were analyzed for phase evolution, microstructure, and strength. Results showed that higher activation temperature with Ca addition enhanced sand reactivity and mineral formation, transitioning from α′_H-C₂S and β-C₂S below 1000 °C to low-reactivity CS or C₃S₂ at 1200 °C. Carbonation curing of RCM activated at 1000 °C with 20 wt.% limestone addition yielded the highest mechanical performance by optimizing phase reactivity, carbonation efficiency, and pore refinement, while lower strengths in other groups stemmed from insufficient CaCO₃ and silica gel. Life cycle assessment showed a 61 % CO₂ reduction compared to Portland cement, which validates thermochemical tuning for closed-loop RCF recycling.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100557"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}