Carbon Capture Science & Technology最新文献

{"title":"Techno-economic and environmental optimization of structured-packing absorbers for amine-based post-combustion CO2 capture","authors":"Md Sakib Hossain,&nbsp;Richard Barker,&nbsp;Timothy Cockerill,&nbsp;Harvey Thompson","doi":"10.1016/j.ccst.2025.100560","DOIUrl":"10.1016/j.ccst.2025.100560","url":null,"abstract":"<div><div>Post combustion carbon capture and storage (CCS) using amine solvents is a mature and retrofittable technology where CO₂ absorber design remains a critical determinant of cost, energy demand, and environmental footprint. Conventional studies typically size absorbers within proprietary simulators or apply simplified surrogates that limit transparency while excluding case specific design and material related impacts. This work develops a physics based, multi-objective optimization framework for structured-packing amine-based CCS absorbers in natural gas combined cycle (NGCC) plants that balances equilibrium driven mass transfer, hydraulics, techno-economic assessment, and cradle-to-gate embodied global warming potential (GWP) considerations. Several commercially available structured packings are evaluated and vendor relevant absorber geometries, which are height, diameter, packing type, and volume are directly linked to costs, reboiler duty, capture efficiency, and embodied emissions. Baseline optimization for a 250 MW_e NGCC plant identifies knee-point optimum absorber designs achieving 95–97% capture at 40–52 million USD, 3.2–4.6 MJ/kmol_solvent reboiler duty, and 1300–1900 t CO₂e embodied GWP. Sensitivity analyses show that plant scaling fundamentally alters packing selection, preferring high surface area packings (Montz BSH-400) for 100 MW_e NGCC case. Meanwhile, at 750 MW_e, hydraulically open packings (Montz B1–250) dominate optimum solutions to limit flooding and column parallelization. Steel emissions intensity further alters optimization outcomes with recycled steel reducing embodied emissions by up to 70%. Overall, the study establishes CCS absorber design as a scale-sensitive, multi-objective problem, and shows that design choices have significant implications for material use, embodied emissions, and overall system sustainability. The findings highlight the need to integrate environmental performance alongside cost and capture efficiency in CCS decision-making for large-scale and sustainable deployment.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100560"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145921004","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":"Effects of metal-modified catalysts on the desorption performance of mixed amine solutions and machine learning prediction","authors":"Xunxuan Heng ,&nbsp;Zhenzhen Zhang ,&nbsp;Longhua Zhu ,&nbsp;Li Yang ,&nbsp;Shugang Xie ,&nbsp;Zeyu Wang ,&nbsp;Dongtai Han ,&nbsp;Fang Liu ,&nbsp;Kunlei Liu","doi":"10.1016/j.ccst.2026.100575","DOIUrl":"10.1016/j.ccst.2026.100575","url":null,"abstract":"<div><div>The high energy penalty associated with solvent regeneration is still a major bottleneck in amine-based CO₂ capture. In this work, the effects of five solid acid catalysts on the desorption performance of a mixed-amine solvent were compared, and the HY catalyst with superior desorption behavior was selected and further modified with four transition metals (Co, Mn, Gr and Ce) to enhance its catalytic activity. The findings indicate that the CO₂ desorption capacity and maximum desorption rate of the Co-modified HY catalyst reach 48.96 mmol and 0.02211 mmol/s, corresponding to increases of 36.80% and 35.39% relative to the blank system, while the relative regenerative load decreases to 73.12% of the blank. In the later stage of desorption, the value of the desorption factor (DF) reaches 1.33 × 10^–6 mol³·kJ^-1·min^-1, which is 259.46% higher than that of the blank, and the catalyst also exhibits good cyclic stability with negligible impact on the absorption performance. Field Emission Scanning Electron Microscope (FESEM), Brunauer-Emmett-Teller (BET), X-ray Diffraction (XRD) and Fourier Transform infrared spectroscopy (FTIR) characterizations indicate that the catalyst does not alter the chemical composition of the absorbent. Furthermore, six machine-learning models were developed to predict the desorption behavior, among which the Spline-KRR model achieves an RMSE of only 0.00133, with R² and Pearson correlation coefficients of 0.992 and 0.998, respectively, demonstrating high fitting accuracy without obvious outliers and confirming the reliability of the model. Future efforts will continue optimizing this catalyst system, providing robust technological support for greenhouse gas reduction and climate change mitigation.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100575"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146073654","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":"AI-driven Carbon Capture and Storage (CCS): an analysis of emerging technologies for sustainable climate solutions","authors":"Chaudhri Abdur Raheem,&nbsp;Syed Qasim Ali Shah,&nbsp;Unib Arshad Lodhi,&nbsp;Muhammad Fahim Khokhar","doi":"10.1016/j.ccst.2026.100576","DOIUrl":"10.1016/j.ccst.2026.100576","url":null,"abstract":"<div><div>Climate change is driven by large greenhouse gas emissions, which have raised an alarm in efforts to reduce atmospheric carbon dioxide levels with CCS, drawing attention to decarbonization efforts. This review provides a comprehensive analysis of current Carbon Dioxide (CO₂) capture methods, including absorption, adsorption, and membrane separation and emerging Direct Air Capture (DAC), while addressing their limitations in cost, efficiency, and scalability. A key focus is the emerging role of Artificial Intelligence (AI) in accelerating CCS deployment. AI-driven techniques, particularly machine learning, are being applied to optimize capture processes, improve system performance, and facilitate the discovery of advanced materials. We synthesize evidence on supervised and unsupervised learning, reinforcement learning and generative models mapped to concrete CCS tasks: sorbent/solvent screening, soft sensing, emissions forecasting, digital-twin control, and storage integrity surveillance This review also highlights recent advancements at the intersection of AI and CCS, evaluates their potential for large-scale implementation, and discusses remaining technical and policy challenges. The findings underscore the strategic importance of integrating AI to enhance the effectiveness and scalability of CCS in support of global decarbonization goals.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100576"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146073656","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":"Effect of cation’s alkyl chain length of imidazolium-driven PVDF-based supported ionic liquid membranes on the CO2 separation performance from biogas and flue gas","authors":"G. Marco-Velasco,&nbsp;V. Martínez-Soria,&nbsp;M. Izquierdo,&nbsp;A. Cháfer,&nbsp;J.D. Badia-Valiente","doi":"10.1016/j.ccst.2026.100572","DOIUrl":"10.1016/j.ccst.2026.100572","url":null,"abstract":"<div><div>This study investigates the impact of the alkyl chain length in imidazolium-based ILs on SILMs using poly(vinylidene fluoride) (PVDF) as a polymer substrate on the membrane’s physicochemical properties and CO₂ separation performance from CO₂/CH₄ and CO₂/N₂ gas mixtures. Particularly, 1-Ethyl, 1-Butyl and 1-Hexyl 3-methylimidazolium bis(trifluoromethylsulfonyl)imide, i.e. [EMIM][NTf₂], [BMIM][NTf₂], and [HMIM][NTf₂]-based SILMs, were assessed. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) confirmed and quantified the presence of ILs within the polymeric matrix, while differential scanning calorimetry (DSC) suggested larger electrostatic interactions for shorter alkyl chains on imidazolium cations. CO₂, CH₄ and N₂ permeability of each SILM were assessed by single-gas permeability tests and their CO₂/N₂ and CO₂/CH₄ selectivity were achieved. ILs with shorter alkyl chain presented stronger interactions with CO₂ molecules. [EMIM][NTf₂] SILM exhibited the highest single-gas CO₂ permeability (357.0 Barrer), CO₂/CH₄ selectivity (α_CO2/CH4 =23.5) and CO₂/N₂ selectivity (α_CO2/N2 =16.4), which were competitive when benchmarked in an upper bound plot. Afterwards, this SILM was tested in extended experiments under dry and humid conditions (≥ 90 h each), in which CO₂ feed composition was modified between CO₂/CH₄ 50/50 %v/v and 25/75 %v/v. CH₄ permeability increased as its proportion in the feed was reduced (from 15.4 Barrer using 100 %v/v CH₄ to 20.5 and 19.9 Barrer when CH₄ was fed at 50 %v/v or higher, under dry and humid conditions, respectively), affecting CO₂/CH₄ selectivity (from ∼24 for single gas to ∼17 and ∼19 in dry and humid experiments, respectively), remaining competitive regarding the technological benchmarking.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100572"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146073653","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":"Mechanistic and Stability Study of the Integrated CO2 Capture-Electroreduction Process in Ethanolamine Solution over Ni/NC Atomic Catalysts","authors":"Rongchi Dai ,&nbsp;Lijuan Zhang ,&nbsp;Xinrui Yuan ,&nbsp;Yuting He ,&nbsp;Yixiong Lin ,&nbsp;Hao Wu ,&nbsp;Wenjin Wu ,&nbsp;Hiroshi Machida ,&nbsp;Koyo Norinaga","doi":"10.1016/j.ccst.2026.100583","DOIUrl":"10.1016/j.ccst.2026.100583","url":null,"abstract":"<div><div>In recent years, the integrated systems for the cost-effective conversion of CO₂ into high-value products have emerged as a major research focus in advancing sustainable green chemistry. The integrated process not only addresses the high energy consumption during desorption but also simplifies the process and reduces costs. However, further improving CO₂ conversion efficiency and achieving system stability remain significant challenges. Here, we report an integrated CO₂ capture and electroreduction process (ICCE) using atomically dispersed Nickel catalysts (Ni/NC) for the direct electroreduction of CO₂ absorbed in 30 wt.% ethanolamine (MEA, MAE, EAE, DMEA) solutions to CO, achieving a high Faradaic efficiency of up to 91%. In addition, the authors compared the effects of different reaction temperatures and different partial pressures of CO₂ in the gas phase on the prolonged electroreduction reaction, and suggested that the integrated system maintaining a gas-liquid equilibrium, can be guaranteed to continuously electrolyze to produce CO at a high Faraday efficiency. Through multiple characterizations, like NMR spectroscopy and In-situ Raman spectroscopy, revealed that CO is primarily derived from interfacially regenerated free CO₂, while carbamate species are not directly reduced but instead adsorb on the Ni/NC catalyst surface as inhibitory intermediates.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100583"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147385190","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":"Integration of adsorption-based carbon capture with alkaline wastewater neutralization: Pilot-scale techno-economic and environmental assessment","authors":"M. García-Atencia ,&nbsp;J. Pujol ,&nbsp;J. Fernandez-Garcia ,&nbsp;R. Gonzalez-Olmos","doi":"10.1016/j.ccst.2026.100582","DOIUrl":"10.1016/j.ccst.2026.100582","url":null,"abstract":"<div><div>The integration of carbon capture and utilization (CCU) technologies into industrial processes opens new pathways to mitigate climate change while aligning with the principles of the circular economy. This study evaluates the technical, environmental and economic performance of using CO₂ captured via vacuum swing adsorption (VSA) for the on-site neutralization of alkaline wastewater generated in a food processing facility. The pilot-scale VSA unit of this study treated flue gas from a natural gas-fired boiler, producing 79 tons of CO₂ per year with 76% (w/w) of CO₂ purity, 67% of CO₂ recovery and specific energy demand of 0.61 kWh/kg_CO2, including energy for final CO₂ compression. The captured CO₂ was successfully used to neutralize the alkaline wastewater. A life cycle assessment (LCA) was carried out to compare three neutralization scenarios: (i) conventional treatment with sulfuric acid (H₂SO₄), (ii) the use of commercial CO₂, and (iii) a circular scenario with the on-site reuse of the CO₂ captured through VSA. The LCA results indicate that the circular scenario reduces the climate change impact by 65% and 48% compared to the commercial CO₂ and H₂SO₄ scenarios, respectively. The environmental impact in the circular scenario is at least 78% lower than the worst-case scenario across nearly all impact categories. From an economic perspective, the circular scenario achieved similar costs to using H₂SO₄ while offering a 40% cost reduction compared to commercial CO₂. These findings demonstrate that on-site CCU for alkaline wastewater treatment is technically feasible at pilot scale and a more sustainable alternative.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100582"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146169949","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":"Ti(OH)4-assisted amine-modified silica aerogels for enhancing CO2 adsorption capacity and amine efficiency","authors":"Jin Young Joo ,&nbsp;Monica Louise T. Triviño ,&nbsp;Hyung-Ho Park ,&nbsp;Jeong Gil Seo","doi":"10.1016/j.ccst.2025.100566","DOIUrl":"10.1016/j.ccst.2025.100566","url":null,"abstract":"<div><div>Amine-modified silica aerogels are promising CO₂ sorbents owing to their high surface area, tunable pore structure, and strong chemisorption interactions between CO₂ and amine groups. However, their amine efficiency and adsorption capacity remain limited for practical applications. In this study, Ti(OH)₄ was introduced as an additive to enhance both the structural and functional performance of amine-grafted silica aerogels. The incorporation of Ti(OH)₄ modified the pore structure, improved the dispersion of amine groups within the silica network, and increased the number of available hydroxyl groups. As a result, the Ti(OH)₄-containing samples exhibited improved CO₂ capture performance and higher amine efficiency under both dry and humid conditions. Detailed analyses further reveal that the additive promoted the formation of bicarbonate intermediates in humid environments, leading to a significant enhancement in adsorption performance. This was supported by TPD-MS results, which showed an increased ratio of desorbed H₂O to CO₂, indicating that Ti(OH)₄ actively participated in the cooperative reaction between CO₂, H₂O, and amine species. The additive-containing sample achieved amine efficiencies of up to 0.475 mol-CO₂/mol-N under dry conditions and 0.905 mol-CO₂/mol-N under humid conditions, which is substantially higher than that of the additive-free sample. These findings demonstrate that Ti(OH)₄ serves as an effective multifunctional additive that enhances amine dispersion and improves CO₂-amine interactions, providing a suitable strategy for developing high-performing amine-based CO₂ adsorbents for practical applications.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100566"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145972757","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":"Comparative environmental techno-economic assessments (eTEAs) of onboard amine-based carbon capture and boil-off gas handling systems on LCO2 carriers","authors":"Hongkyoung Shin ,&nbsp;Juyoung Oh ,&nbsp;Yunju Jeon ,&nbsp;Youngsub Lim ,&nbsp;Thomas A. Adams II","doi":"10.1016/j.ccst.2026.100569","DOIUrl":"10.1016/j.ccst.2026.100569","url":null,"abstract":"<div><div>The continuous increase in greenhouse gas (GHG) emissions and the strengthening of environmental regulations have brought Carbon Capture, Utilization, and Storage (CCUS) technology into focus. Most liquefied carbon dioxide carriers (LCO₂Cs) employ liquefied natural gas (LNG) propulsion, but they still emit significant GHG emissions, highlighting the need for further reduction. While boil-off gas (BOG) handling is essential for long-distance LCO₂C operations, no studies have examined onboard carbon capture and storage (OCCS) systems integrated with BOG handling systems. This study evaluates five operational cases—BOG re-liquefaction (RLIQ), OCCS, purge gas recapture, and their combinations—to assess the GHG reduction and economic feasibility of LCO₂Cs. Although standalone RLIQ and OCCS showed similar reduction rates (29% and 30%), the avoidance cost of OCCS alone was more than two times higher. Integrating BOG RLIQ, OCCS, and purge recirculation achieved up to 69% well-to-wake emission reduction with an avoidance cost of $355.9/t_CO₂eq. Therefore, integrating OCCS with BOG RLIQ is the most effective approach for LCO₂Cs. Despite limited competitiveness under current low carbon tax levels, the avoidance cost of $320–416/t_CO₂eq remains favorable compared with other low-carbon technologies such as direct air capture ($500–1100/t_CO₂eq).</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100569"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022416","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)00028-X","DOIUrl":"10.1016/S2772-6568(26)00028-X","url":null,"abstract":"","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100595"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147448504","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":"Corrigendum to “Volatile nitrosamine manual stack monitoring method: sampling validation and performance assessment on stack simulated conditions” [Carbon Capture Science & Technology, Volume 17, December 2025, 100539]","authors":"Haydn Barros,&nbsp;Richard Harvey,&nbsp;Hannah Cheales-Norman,&nbsp;Chris Dimopoulos,&nbsp;Rod Robinson","doi":"10.1016/j.ccst.2026.100580","DOIUrl":"10.1016/j.ccst.2026.100580","url":null,"abstract":"","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100580"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146169937","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}