Carbon Capture Science & Technology最新文献

{"title":"One-step carbon capture and critical element recovery from mine tailings via carbonic anhydrase enhancement","authors":"Kyriakos Antoniadis,&nbsp;Paul Christakopoulos,&nbsp;Ulrika Rova,&nbsp;Io Antonopoulou","doi":"10.1016/j.ccst.2026.100673","DOIUrl":"10.1016/j.ccst.2026.100673","url":null,"abstract":"<div><div>Mine tailings offer a promising resource for carbon dioxide (CO₂) sequestration through mineral carbonation. In this study, ten heterogeneous tailings from Northern Europe were evaluated as co-capture agents in an aqueous CO₂ system under mild conditions (25 °C, 1 atm, 20% CO₂), with and without an ultrastable carbonic anhydrase (DvCA8.0). The enzyme significantly accelerated CO₂ hydration, resulting in faster pH reduction and enhanced bicarbonate formation. Enzymatic systems achieved up to threefold higher CO₂ capture compared to controls, with maximum concentrations of 333.8 mg L⁻¹. Quantitative analysis showed that &gt;80% of captured CO₂ originated from aqueous hydration, while mineral dissolution contributed &lt;21%. Although experimental uptake remained below theoretical capacity, the results demonstrate the effectiveness of enzyme-assisted carbonation in complex mineral systems. Additionally, selective leaching of valuable elements, including rare earth elements, highlights the potential for simultaneous carbon capture and resource recovery.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"20 ","pages":"Article 100673"},"PeriodicalIF":10.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148951545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantification of mineral carbon capture with Raman spectroscopy and machine learning","authors":"Ginger W. Brown,&nbsp;Serena Y. Chin,&nbsp;Natalia V. Solomatova,&nbsp;Eric Wynands,&nbsp;Sadegh Shokatian,&nbsp;Edward Grant","doi":"10.1016/j.ccst.2026.100681","DOIUrl":"10.1016/j.ccst.2026.100681","url":null,"abstract":"<div><div>Carbon mineralization converts CO₂ into stable carbonate minerals through reactions with magnesium- and calcium-rich feedstocks derived from geological and industrial sources. Despite its promise for long-term carbon storage, large-scale deployment remains limited by the lack of rapid, non-destructive, and scalable methods for quantifying carbon uptake under realistic conditions. Conventional analytical techniques, including X-ray diffraction, thermogravimetric analysis, and combustion-based measurements, are accurate but slow, destructive, and unsuitable for in situ or high-throughput monitoring. To address this need, the present work implements Raman spectroscopy to quantify mineral carbon capture with multivariate machine learning (ML) regression. We compare conventional single-laser Raman spectroscopy with dual-laser Shifted-Excitation Raman Difference Spectroscopy (SERDS), which suppresses fluorescence to enable Raman measurements in chemically-complex samples. In samples of carbonated brucite (Mg(OH)₂), we show that the chemical complexity of brucite carbonation requires the use of multivariate machine learning quantification. Our results show that single-laser, conventional Raman spectroscopy can accurately predict CO₂ uptake in low-fluorescence samples, but the performance of conventional Raman spectroscopy degrades significantly under fluorescence interference. SERDS recovered chemically informative spectral features and improved cross-validated prediction performance in the presence of fluorescence. This work establishes a Raman strategy for monitoring mineral carbon capture with applications in both geological and industrial settings.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"20 ","pages":"Article 100681"},"PeriodicalIF":10.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148951544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Olivine dissolution rates in wet CO₂ match or exceed aqueous rates","authors":"Mohamed A. Saleh,&nbsp;J.P. Martin Trusler,&nbsp;Mary P. Ryan,&nbsp;Nihal Darraj,&nbsp;Samuel Krevor","doi":"10.1016/j.ccst.2026.100682","DOIUrl":"10.1016/j.ccst.2026.100682","url":null,"abstract":"<div><div>Carbon dioxide injection into subsurface basalt, where it mineralises into carbonates, enables permanent emissions removal. Its scalability is limited by slow aqueous dissolution rates of metal silicate minerals, primarily olivine. Aqueous dissolution rate laws are well-established and apply to projects where CO₂ is dissolved in water before injection underground. An alternative approach reduces water consumption by directly injecting CO₂. However, mineralisation kinetics with CO₂-rich fluids are uncertain. Past observations are mostly qualitative and inconsistently report higher and lower reactivity compared to aqueous conditions. Here we quantify olivine dissolution rates using a novel plug-flow reactor setup in which capillarity is used to saturate a forsteritic olivine grain pack with CO₂, complemented by X-ray imaging. Co-injection of water and liquid CO₂ at elevated capillary pressure resulted in dissolution rates matching or exceeding aqueous rates, with rate enhancement of up to a factor of 1.1–3.76 depending on how the normalisation to surface area is treated. Conversely, limiting water mobility inhibited rates and is likely an explanation for past observations. Reactivity with liquid CO₂ is governed by the mobility of interfacial water films rather than total water content. Carbon mineralisation with the direct injection of CO₂ will have comparable or faster mineralisation as aqueous injection while requiring far less water.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"20 ","pages":"Article 100682"},"PeriodicalIF":10.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148951540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solids with integrated reactive amines for energy-efficient CO2 capture","authors":"Rahul Navik,&nbsp;Ding Xiao,&nbsp;Jia Li","doi":"10.1016/j.ccst.2026.100679","DOIUrl":"10.1016/j.ccst.2026.100679","url":null,"abstract":"<div><div>Solid adsorbents with integrated reactive amines are promising for CO₂ capture owing to their high efficiency and operational simplicity; yet stability, regeneration energy, and scalability remain critical challenges. Here, an ammonia-assisted seeding strategy is developed to directly generate and integrate amine functionalities on mesoporous silica (MS) and porous carbon (PC). The resulting materials exhibit CO₂ uptakes of 3.14 mmol/g for MS integrated with reactive amines (MSWIRA) and 2.9 mmol/g for PC integrated with reactive amines (PCWIRA). Under flue gas conditions (15% CO₂), the CO₂/N₂ selectivity values were 419 for MSWIRA and 258 for PCWIRA. The isosteric heats of adsorption (Q_st) were 71.96 kJ/mol for MSWIRA and 82.59 kJ/mol for PCWIRA. Regeneration energies remained low at 36 and 39 kJ/mol for MSWIRA and PCWIRA, respectively. Under mixed gas dynamic conditions at 303 K, MSWIRA showed a breakthrough capacity of 2.12 mmol/g, and PCWIRA presented 1.88 mmol/g, with retention times of 24.43 and 21.03 min, respectively. Both materials retained &gt;98% of their capacity after 50 thermal adsorption/desorption cycles, with total capacity loss of 0.73% for MSWIRA and 1.41% for PCWIRA. Both materials also exhibited moderate resistance to moisture aging, with only minor variations in the chemical configuration. The approach demonstrated in this work may be applied to develop functional materials for different applications.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"20 ","pages":"Article 100679"},"PeriodicalIF":10.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148951543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hourly weather-driven techno-economic assessment of heat pump-assisted direct air capture across climatically diverse regions of China","authors":"Lei Zhao,&nbsp;Gang Feng,&nbsp;Yong He,&nbsp;Jin Zhu,&nbsp;Jiarong Zhang,&nbsp;You Lu,&nbsp;Zhongqing Yang,&nbsp;Shuai Deng","doi":"10.1016/j.ccst.2026.100684","DOIUrl":"10.1016/j.ccst.2026.100684","url":null,"abstract":"<div><div>Regional performance of solid-sorbent direct air capture (DAC) reflects nonlinear interactions among weather, atmospheric pressure, electrified regeneration, and electricity pricing, yet these factors are often evaluated separately or using temporally averaged inputs. This study develops an hourly techno-economic framework for temperature–vacuum swing adsorption (TVSA) DAC coupled with an electrically driven high-temperature heat pump and applies it to five climatically contrasting Chinese locations at a common annual capture target of 50 <span><math><msub><mi>t</mi><mrow><mi>C</mi><msub><mi>O</mi><mn>2</mn></msub></mrow></msub></math></span>/a. Hourly ERA5 temperature, relative humidity, and surface pressure for 2010–2025 are coupled to a process-based TVSA key performance indicator surrogate. A first-order pressure correction and a weather-dependent heat pump model are then used to calculate capture performance, energy use, water co-adsorption, equipment capacity, and the levelized cost of direct air capture (LCOD). Hourly loads for 2025 are additionally matched to contemporaneous provincial time-of-use (TOU) tariffs without load shifting. Fixed-price LCOD exhibits limited interannual variability, with coefficients of variation of 0.33%–1.57%, and the regional economic ordering remains stable across the 16 weather years. Temporal aggregation nevertheless introduces systematic downward bias: monthly- and annual-mean meteorology underestimate LCOD by 2.81%–6.89% and 3.92%–12.1%, respectively, while annual means understate rated heat pump capacity and peak electrical load by up to 46.4% and 48.5%. In the 2025 hourly cases, specific electricity use spans 1.64–2.19 MWh_e/<span><math><msub><mi>t</mi><mrow><mi>C</mi><msub><mi>O</mi><mn>2</mn></msub></mrow></msub></math></span>, and fixed-price LCOD lies between 4740 and 6610 CNY/<span><math><msub><mi>t</mi><mrow><mi>C</mi><msub><mi>O</mi><mn>2</mn></msub></mrow></msub></math></span>. Passive TOU pricing changes the least-cost location from Huizhou to Turpan, where LCOD decreases to 4690 CNY/<span><math><msub><mi>t</mi><mrow><mi>C</mi><msub><mi>O</mi><mn>2</mn></msub></mrow></msub></math></span>. These findings demonstrate the value of hourly, weather- and location-resolved techno-economic analysis for regional planning and deployment of DAC and other electrified carbon-removal technologies.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"20 ","pages":"Article 100684"},"PeriodicalIF":10.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148951546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accelerated carbonation curing of concrete masonry units: Process parameters, performance, and CO2 capturing potential","authors":"Saeed M. Al-Tarbi,&nbsp;Rida Assaggaf,&nbsp;Mohmmed A. Al-Osta,&nbsp;Amin Al-Fakih,&nbsp;Ali Mohammed Babalghaith","doi":"10.1016/j.ccst.2026.100680","DOIUrl":"10.1016/j.ccst.2026.100680","url":null,"abstract":"<div><div>Accelerated carbonation curing (ACC) has attracted increasing attention as a curing technique for concrete masonry units (CMUs) because it can simultaneously accelerate strength development and utilize CO₂. Unlike conventional steam curing, ACC introduces controlled CO₂ exposure during the curing stage of freshly formed masonry products, enabling strength development and permanent carbon sequestration. This paper reviews the current research on ACC of load-bearing and non-load-bearing CMUs, including manufacturing methods, mix design, curing parameters, CO₂ uptake, mechanical properties, durability, and industrial implementation. Evidence from laboratory-scale specimens, and pilot- and full-scale block production is examined to identify the governing mechanisms and practical performance trends. The reviewed studies show that ACC can permanently sequester approximately 9–25% of cement mass as CO₂ in OPC-based systems, while reducing curing-energy demand from approximately 2500 kJ/block for steam curing to about 500 kJ/block. Across the literature, the optimum moisture condition consistently corresponded to approximately 4–6% residual moisture or 35–50% mixing-water loss, confirming that moisture pre-conditioning is the dominant process variable controlling carbonation efficiency. The reviewed studies also demonstrate that low-pressure carbonation curing, typically about 0.1–0.5 bar above atmospheric pressure and 2–6 h duration, is generally sufficient for practical masonry production. ACC is shown to provide substantial early-age strength gain and CO₂ uptake, although maximum sequestration and maximum strength do not necessarily coincide under the same curing conditions. The review also shows that post-carbonation hydration is important for later-age performance, and that ACC generally improves dimensional stability and reduces water transport, while long-term durability evidence remains comparatively limited. Alternative and low-clinker binder systems, including recycled-aggregate fines, slag-based, and waste-derived masonry products, further demonstrate the broader potential of ACC, but their scale-up and standardization are less mature than those of OPC-based systems. Overall, ACC is a feasible alternative to steam curing for masonry production. ACC can reduce energy consumption and permanently store CO₂ in masonry products. However, wider industrial application still requires standardized curing methods, long-term durability verification, and optimization of plant-scale curing processes.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"20 ","pages":"Article 100680"},"PeriodicalIF":10.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148854359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Outside Back Cover","authors":"","doi":"10.1016/S2772-6568(26)00125-9","DOIUrl":"10.1016/S2772-6568(26)00125-9","url":null,"abstract":"","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"20 ","pages":"Article 100692"},"PeriodicalIF":10.2,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149003940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation on the cyclic CO2 capture behaviour and degradation mechanism of molten salt promoted MgO derived from commercial hydromagnesite","authors":"Sumit Chakraborty ,&nbsp;Paul Fennell","doi":"10.1016/j.ccst.2026.100633","DOIUrl":"10.1016/j.ccst.2026.100633","url":null,"abstract":"<div><div>This study examines the cyclic CO₂ capture performance and degradation mechanism of molten salt-promoted MgO, a low-cost and scalable precursor, derived from commercially available hydromagnesite. The material was modified using different nitrate-based molten salt compositions to enhance CO₂ uptake. Among the formulations, single- and double-salt-promoted MgO exhibited the highest initial capture capacities; however, performance declined with repeated cycling. Notably, the single-salt system demonstrated comparatively better stability over 10–22 cycles than others. The observed reduction in CO₂ capture capacity is attributed to the gradual loss and transformation of nitrate species, which reduces the effective molten phase and pore blockage. Thermodynamic analysis supports the conversion of active nitrate phases into less effective forms during cycling, while X-ray diffraction and ICP-MS confirm a decrease in nitrate content despite minimal change in overall sodium levels. These findings highlight the critical role of molten salt stability in sustaining CO₂ capture performance and provide insight into the design of more durable MgO-based sorbents.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"19 ","pages":"Article 100633"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148167870","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":"Electrifying CO2 temperature swing adsorption: A comparative review of resistive, induction, and microwave heating from material properties to process performance","authors":"Oliver Stratil,&nbsp;Rafael Gonzalez-Olmos,&nbsp;Javier Fernandez-Garcia","doi":"10.1016/j.ccst.2026.100636","DOIUrl":"10.1016/j.ccst.2026.100636","url":null,"abstract":"<div><div>Electrified temperature swing adsorption (eTSA) has emerged as a promising approach for intensified post-combustion CO₂ capture by enabling direct heat generation within the adsorption bed and thereby reducing the thermal limitations associated with conventional externally heated TSA systems. This review systematically compares the three main electrified heating approaches currently investigated for post-combustion CO₂ capture: Resistive heating (RH), Induction heating (IH), and Microwave heating (MWH). To improve comparability across the fragmented and predominantly laboratory-scale eTSA literature, publications of comparable boundary conditions were analyzed using homogeneous evaluation criteria including working capacity, CO₂/N₂ selectivity, heating rate, temperature homogeneity, regeneration energy and electrical and thermal energy efficiencies. Among the reviewed adsorbents, physisorbents dominated the current eTSA literature, particularly metal-organic frameworks (MOFs), zeolites, and activated carbons (ACs). Mg-MOF-74 and Mg-Gallate exhibited the highest working capacities, followed by the zeolites 13X and NaUSY, while AC offers direct applicability for RH and MWH because of its conductive and microwave-responsive properties. However, humidity sensitivity remains a major limitation for high adsorption capacity physisorbents. All reviewed electrified heating approaches achieved substantially higher heating rates than conventional conductive wall heating or hot gas purge systems. RH has a potentially very high overall energy efficiency, although homogeneous current distribution remains challenging. IH provides high flexibility in adsorbent selection through magnetic heating additives and offers strong potential for homogeneous internal heating, while efficient magnetic field coupling remains the key challenge for energy-efficient operation. MWH enables extremely rapid heating without necessarily requiring additional heating materials but faces challenges regarding temperature homogeneity and electric-to-thermal energy efficiency. Overall, all electrified approaches still face important scale-up challenges regarding heat and field distribution, and electrical-to-thermal energy efficiency. This review highlights the strong potential of eTSA for flexible and intensified CO₂ capture while identifying humidity-tolerant adsorbents, cyclic stability, heat-management optimization, and realistic process-scale evaluation as key priorities for future research and industrial implementation.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"19 ","pages":"Article 100636"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148167985","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":"Outside Back Cover","authors":"","doi":"10.1016/S2772-6568(26)00078-3","DOIUrl":"10.1016/S2772-6568(26)00078-3","url":null,"abstract":"","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"19 ","pages":"Article 100645"},"PeriodicalIF":10.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148582294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}