International Journal of Greenhouse Gas Control最新文献

{"title":"Quantifying CO2 plume stabilization at carbon storage projects, North Dakota, USA","authors":"Matthew E. Burton-Kelly,&nbsp;John E. Hunt,&nbsp;Neil W. Dotzenrod,&nbsp;John A. Templeton,&nbsp;Joshua G. Regorrah,&nbsp;Chantsalmaa Dalkhaa,&nbsp;Amanda J. Livers-Douglas,&nbsp;Wesley D. Peck,&nbsp;Kevin C. Connors,&nbsp;Nicholas A. Azzolina","doi":"10.1016/j.ijggc.2025.104456","DOIUrl":"10.1016/j.ijggc.2025.104456","url":null,"abstract":"<div><div>This study presents an approach for quantifying when injected carbon dioxide (CO₂) stabilizes pursuant to carbon capture and storage (CCS) project permitting and site closure requirements. The distribution of mobile-phase CO₂ (CO₂ plume) will evolve within the storage reservoir during and after injection through both physical and chemical trapping mechanisms. CCS policies generally agree that the CO₂ plume’s migratory behavior in post-injection should demonstrate nonendangerment to the environment but do not provide specific guidance on how to meet the definition of plume stabilization, generating some uncertainty for operators. Plume stability herein means the CO₂ plume 1) changes size minimally and predictably in the storage reservoir such that it will not cross key boundaries identified in the permit and 2) does not pose a threat to human health, underground sources of drinking water (USDWs), and the environment because of lateral migration to areas where leakage pathways may exist. Published literature on plume metrics was reviewed to determine which metric(s) may be most appropriate for determining CO₂ plume stability. A technical approach that defines plume stabilization by estimating the rate of change in the geographic footprint of the CO₂ plume with respect to time was developed and illustrated using a case study from North Dakota, USA, as a proposed solution for CCS operators to apply at the project permitting stage. Any prospective CCS operator may benefit from using the same approach to inform the selection of pore space lease and monitoring areas and develop post-injection site care plans.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"146 ","pages":"Article 104456"},"PeriodicalIF":5.2,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144890252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deployment of carbon capture and storage in the cement industry – Is the European Union up to shape?","authors":"Anna Hörbe Emanuelsson,&nbsp;Johan Rootzén ,&nbsp;Filip Johnsson","doi":"10.1016/j.ijggc.2025.104442","DOIUrl":"10.1016/j.ijggc.2025.104442","url":null,"abstract":"<div><div>The implementation of Carbon Capture and Storage (CCS) technologies in the cement industry is crucial for achieving near-zero emissions. However, CCS remains capital-intensive, with high operational costs, and faces significant market, investment, and infrastructure coordination barriers. Its deployment also depends on national and regional regulatory frameworks, given the need for CO₂ capture, transport, and storage. This study assesses the European Union’s (EU) readiness to implement CCS in the cement sector. Results indicate that the EU-27 cement industry could transition to near-zero emissions within a timeline aligned with EU climate targets, assuming: (i) the EU Emissions Trading System (ETS) price rises in line with projections under the Fit for 55 package, and (ii) sufficient CO₂ storage capacity is made available. The findings underscore the need for complementary policy measures and CCS-specific regulatory frameworks to facilitate deployment. Although early and rapid implementation of CCS could deliver substantial climate benefits, it also poses challenges, including shortages of contractors, expertise, and materials. Moreover, historical investment patterns suggest that the required scale and pace of deployment would be unprecedented. While the EU has laid a strong foundation for the cement industry’s transition, CCS deployment potential differs among Member States, depending on the geographic distribution of cement plants and proximity to storage sites. National regulatory variations further complicate deployment. These factors must be addressed to enable a successful shift to near-zero emissions practices in the EU cement industry.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"146 ","pages":"Article 104442"},"PeriodicalIF":5.2,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144885452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of data-driven models for post-combustion CO2 capture: A comparative analysis of accuracy, robustness and feasibility","authors":"Valentin Formont ,&nbsp;Adil Rasheed ,&nbsp;Peter Moser ,&nbsp;Georg Wiechers ,&nbsp;Lars O. Nord","doi":"10.1016/j.ijggc.2025.104450","DOIUrl":"10.1016/j.ijggc.2025.104450","url":null,"abstract":"<div><div>This study examines the predictive performance, preprocessing impact, computational feasibility, and robustness of data-driven models in simulating absorber behaviour in carbon capture systems under real-world conditions. Five algorithms — Dynamic Mode Decomposition (simplified and full), Autoregressive Integrated Moving Average, Random Forest, Support Vector Regression, and Long Short-Term Memory networks — were evaluated across three preprocessing scenarios: Robust Principal Component Analysis with and without interpolation, and unprocessed data. Results show that preprocessing generally improves accuracy, with RPCA-based approaches outperforming untreated datasets across most horizons, although its impact on robustness under noise remains limited. Robustness analysis was conducted on the three best-performing models — DMD, ARIMA, and LSTM — revealing distinct behaviours. Dynamic Mode Decomposition was the most computationally efficient, providing near-instantaneous training and prediction, and maintained acceptable performance under noise. ARIMA exhibited strong robustness and predictive capacity, with minimal performance degradation across noise levels. In contrast, Long Short-Term Memory networks, while effective for long-term forecasting, displayed high computational costs and significant sensitivity to stochastic training effects. These limitations resulted in inconsistent performance across noise levels, even under low perturbations. The study highlights trade-offs between accuracy, feasibility, and robustness, stressing the importance of aligning model choice with deployment constraints. While black-box methods offer strong predictions, their sensitivity to randomness and computational demands hinder practical use. Robust and reproducible approaches like DMD balance efficiency and reliability, making them well-suited for industrial carbon capture applications.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"146 ","pages":"Article 104450"},"PeriodicalIF":5.2,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144885453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of an alternative route for alumina production: Integration of calcium looping to Pedersen process aiming at zero emissions and bauxite residue avoidance","authors":"Javier Sáez-Guinoa ,&nbsp;Eva Llera-Sastresa ,&nbsp;Luis M Romeo","doi":"10.1016/j.ijggc.2025.104453","DOIUrl":"10.1016/j.ijggc.2025.104453","url":null,"abstract":"<div><div>The aluminium industry is a notable emitter of CO₂ and a significant contributor to mineral scarcity. Alumina extraction, typically conducted via the Bayer process, faces two main challenges: using fossil fuels and generating bauxite residue. A recently proposed approach, the Pedersen process, aims to address these challenges by removing the iron oxide content from the ore through an additional iron smelting step, thereby eliminating the generation of bauxite residue. This study evaluates the material and energy performance of alumina and pig iron co-production from bauxite using the principles of the Pedersen process. Different thermodynamic simulations of a Pedersen process layout were carried out using Aspen Plus software, and key parameters were validated against existing literature. Additionally, diverse CO₂ capture configurations based on calcium looping were assessed, performing an energy optimization to achieve carbon-neutral and zero-residue alumina production.</div><div>Results indicate that the energy demand of the Pedersen process is notably higher than the average Bayer process for bauxites with high aluminium/iron ratios, with an estimated energy consumption of 11.92 GJ per tonne of products. However, low aluminium/iron ratios render better energy performances (10.15 GJ per tonne), showing potential feasibility in terms of energy consumption. The integration of a calcium-looping plant led to low energy penalties, thanks to the replacement of CaCO₃ in the Pedersen plant by adding purged CaO from the calcium-looping plant. The energy penalties, estimated at a minimum of 1.10-2.79 GJ per tonne of CO₂ avoided, show favourable results that could pave the way for a smarter use of resources and a decarbonized alumina production.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"146 ","pages":"Article 104453"},"PeriodicalIF":5.2,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144885454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A 3D Darcy-scale reactive transport modeling of experimental wormhole formation in limestone under geological CO2 storage conditions","authors":"A. Vafaie ,&nbsp;J.M. Soler ,&nbsp;J. Cama ,&nbsp;I.R. Kivi ,&nbsp;V. Vilarrasa","doi":"10.1016/j.ijggc.2025.104452","DOIUrl":"10.1016/j.ijggc.2025.104452","url":null,"abstract":"<div><div>Geologic CO₂ storage is projected to play a key role in mitigating the climate change crisis. Changes in pore structure and hydraulic properties are likely to occur in carbonate rocks when they interact with CO₂ as an acid-producing agent. The ability to understand and evaluate such alterations benefits an improved understanding of CO₂ flow and storage behavior in the subsurface. Here, we combine laboratory experiments and numerical simulations of CO₂-saturated water and HCl solution injections into limestone specimens to develop an improved understanding of reactive flow in these rocks. We employ a digital rock approach based on X-ray micro-computed tomography (µCT) to construct heterogeneous rock permeability maps, fed as inputs into 3D Darcy-scale reactive transport models of the experiments. The simulations satisfactorily reproduce measured changes in effluent chemistry, porosity, and permeability as well as the observed dissolution features in reacted rock samples. We show that the pore space heterogeneity controls chemical reactions from the very beginning of acid injections while the acid type becomes progressively important as the reaction front further penetrates the rock. The complete dissociation of HCl as a strong acid leads to a compact dissolution pattern, numerically captured using the classical Kozeny-Carman porosity-permeability relationship. In contrast, the partial dissociation of aqueous CO₂ as a weak acid and the related pH-buffering effect drive a strong feedback between fluid flow and dissolution, leading to wormhole formation. This dissolution pattern can be only reproduced by a large exponent (15 to 27.6) in the porosity-permeability relationship. The obtained results highlight the primary control of small-scale heterogeneities and acid type on coupled flow and chemical reactions in permeable limestones and the need for a rigorous upscaling approach for field-scale studies.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"146 ","pages":"Article 104452"},"PeriodicalIF":5.2,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding aerosol growth and emissions: CO2 capture in the RWE Niederaussem pilot plant using CESAR1","authors":"Hallvard F. Svendsen ,&nbsp;Hanna K. Knuutila ,&nbsp;Ardi Hartono ,&nbsp;Diego Morlando ,&nbsp;Maxime Francois ,&nbsp;Peter Moser ,&nbsp;Georg Wiechers","doi":"10.1016/j.ijggc.2025.104439","DOIUrl":"10.1016/j.ijggc.2025.104439","url":null,"abstract":"<div><div>This work presents a new class-based aerosol model using the CESAR1 solvent system, giving improved understanding and predictability of droplet growth and aerosol emissions. The model is validated against two cases from the RWE Niederaussem pilot plant, one with low and one with high particle number count (PNC), 2·10¹⁰ droplets/m³ and 1.4·10¹² droplets/m³, respectively. The model is shown to predict well water wash steady-state amine concentrations, the compositions of droplets falling from and hitting the outlet demister, and outlet emissions.</div><div>Aerosol carryover from the absorber accounted for 18 and 30 % of the AMP and 78 and 92 % of the PZ water wash liquid amine content for low and high PNC, respectively. Thus, any simulation model not considering aerosols will overestimate the effect of the water wash if aerosols are present.</div><div>For low PNC, all droplets grew to approximately the same size regardless of inlet size. High PNC resulted in outlet droplet sizes strongly dependent on inlet size. Droplet amine concentration was also found to depend on droplet size, and large droplets showed both higher amine concentration and PZ/AMP ratio than small ones. This is important as droplets are selectively removed in a demister, and using classes is a clear improvement over the distribution-based model.</div><div>Even low PNC is shown to have a significant effect on the gas phase amine depletion, with PZ much more affected than AMP. High PNC accentuates this effect.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"146 ","pages":"Article 104439"},"PeriodicalIF":5.2,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cost-effective carbon-dioxide removal through water electrolysis and Oxy-BECCS integration","authors":"Samira Rostom,&nbsp;Robert Symonds,&nbsp;Robin W. Hughes,&nbsp;Scott Champagne","doi":"10.1016/j.ijggc.2025.104449","DOIUrl":"10.1016/j.ijggc.2025.104449","url":null,"abstract":"<div><div>This study investigates the integration of water electrolysis with biomass oxy-combustion and gasification for hydrogen (H₂) production and carbon dioxide removal (CDR) within a bioenergy with carbon capture and storage (BECCS) framework. As demand for clean H₂ grows to meet decarbonization goals, producing it with minimal emissions is increasingly critical. Oxygen (O₂) enhances combustion and gasification by reducing nitrogen dilution, improving thermal conversion efficiency, and facilitating CO₂ capture. Four configurations, atmospheric and pressurized combustion and gasification, are evaluated to assess the impact of process type and pressure on H₂ production, CO₂ capture, and electricity demand, highlighting trade-offs between conditions and costs.</div><div>All configurations achieve a net-negative emission system (Scope 1), with pressurized gasification delivering the lowest levelized cost of hydrogen (LCOH) at $3.91/kg H₂, a 21% reduction compared to the atmospheric combustion case, excluding CO₂ credits. Total capital investment (TCI) and cost of manufacturing (COM) are the lowest for combustion cases due to their simpler process design, requiring fewer equipment units and lower net electricity demand. Conversely, gasification configurations require syngas processing and compression, leading to higher capital and operating costs, however, these are offset by the near doubling of H₂ production. Sensitivity analysis reveals that CO₂ credits of up to $117 USD/tonne can reduce LCOH below standalone electrolysis. Additionally, electrolyzer-integrated O₂ consistently outperforms air separation unit (ASU)-sourced O₂ in cost-effectiveness across scenarios, highlighting the economic value of CO₂ credits in supporting net-negative H₂ pathways. Pressurized gasification is identified as the most cost-effective overall, while combustion is better suited to electricity- or capital-constrained applications.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"146 ","pages":"Article 104449"},"PeriodicalIF":5.2,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144861331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A streamlined qualitative risk assessment framework for corrective action in legacy wells: A case study from the lake Pontchartrain basin","authors":"Ishtiaque Anwar ,&nbsp;Meng Meng ,&nbsp;William J. Carey ,&nbsp;Ahsan Ali ,&nbsp;Maitri V. Dalal ,&nbsp;Phillip H. Stauffer","doi":"10.1016/j.ijggc.2025.104451","DOIUrl":"10.1016/j.ijggc.2025.104451","url":null,"abstract":"<div><div>Legacy wells, originally drilled for oil and gas extraction, pose significant environmental risks owing to outdated construction standards and inadequate plugging or sealing. With the increasing adoption of Carbon Capture and Storage (CCS), concerns over CO₂ leakage through these wells have intensified, thereby necessitating a systematic approach to risk assessment and remediation. This study introduces a streamlined qualitative risk assessment framework designed to evaluate legacy well integrity by analyzing well construction attributes, potential leakage pathways, and associated uncertainties. The framework incorporates probabilistic modeling to quantify risk and generates a risk matrix to guide decision-making for corrective actions. To address remediation prioritization, a phased corrective action strategy is proposed, considering the proximity of legacy wells to an injection site and the projected CO₂ plume migration over time. The framework was applied to 28 legacy wells in the Lake Pontchartrain Basin, Louisiana, identifying 23 legacy wells with a significant potential for leakage, requiring remediation considerations. A phased remediation strategy was illustrated using a hypothetical injection well location and plume area modeling to optimize resource allocation. This approach provides a structured decision-making tool for regulators, operators, and policymakers, ensuring effective well integrity management in CCS projects. The streamlined framework is intended to facilitate corrective action assessment while also contributing to the ongoing development of accessible, fit-for-purpose risk assessment tools.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"146 ","pages":"Article 104451"},"PeriodicalIF":5.2,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144828271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing the potential for CO2 sequestration of a saline aquifer in the Frio Formation, South Texas, USA","authors":"Carlos A. Uroza ,&nbsp;Karen Nuss ,&nbsp;Katherine Romanak ,&nbsp;Shuvajit Bhattacharya ,&nbsp;Dallas Dunlap ,&nbsp;Susan Hovorka","doi":"10.1016/j.ijggc.2025.104441","DOIUrl":"10.1016/j.ijggc.2025.104441","url":null,"abstract":"<div><div>The Frio Formation onshore Texas, USA, represents a significant target for CO₂ storage, and South Texas particularly has experienced an increased interest. This study evaluates a 100,000-acre area containing a ∼5000-foot-thick, sand-prone reservoir bounded by sealing normal faults. Reservoir connectivity, porosity, and permeability vary, with permeability potentially impacted by volcanic and carbonate content. The study addresses the need for reliable methods to evaluate storage potential in reservoirs with limited data, but located adjacent to legacy oil-gas activity. We provide a practical workflow to assess CO₂ storage in saline aquifers, producing defensible storage capacity estimates without requiring full reservoir modeling, while still accounting for reservoir heterogeneity and fault compartmentalization.</div><div>To define the site's structural configuration and stratigraphic framework, 3D and 2D seismic mapping were performed, as well as well-log correlation to subdivide the Frio stratigraphy into seven reservoir zones. Depositional facies analysis provided insights into sand distribution, lateral reservoir continuity, and sand presence in the syncline down-dip of the main rollover anticline. Petrophysical analysis characterized reservoir quality within the injection interval. Rock quality is emphasized due to its critical role in reservoir injectivity within the Frio section.</div><div>This comprehensive geological evaluation informed the CO₂ pressure-based capacity calculations, estimating 460 million metric tons of storage potential within the Frio, in the area of interest. The study highlights the value of integrated methodologies and tailored approaches for assessing realistic CO₂ storage capacities, offering practical solutions for South Texas storage and a comprehensive methodology for incorporating data from past oil-gas development to saline formations.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"146 ","pages":"Article 104441"},"PeriodicalIF":5.2,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144771575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Life-cycle levelized cost and carbon removal efficiency of solid sorbent direct air carbon capture and storage in China","authors":"Yuxuan Wang ,&nbsp;Xian Zhang ,&nbsp;Jing-Li Fan","doi":"10.1016/j.ijggc.2025.104440","DOIUrl":"10.1016/j.ijggc.2025.104440","url":null,"abstract":"<div><div>Direct air carbon capture and storage (DACCS) is recognized as one of the most promising large-scale negative emission technologies (NETs), offering substantial potential for mitigating atmospheric CO₂ concentrations. In this study, we developed a comprehensive full-chain solid sorbent DACCS system assessment model that integrates all key stages, including DAC plant construction, CO₂ capture, compression, transport, and storage. This model was applied to 28 provinces across China to evaluate the life-cycle levelized cost of CO₂ removal (LCOD) and carbon removal efficiency (CRE) of DACCS systems powered by 36 different energy supply configurations. The results indicate that: (1) The combination of waste hot water and coal power yields the lowest LCOD ($260/t CO₂), but with a limited CRE of 30 %. In contrast, pairing waste steam with nuclear power achieves the highest CRE (97 %) at a similarly low LCOD ($264/t CO₂). (2) Photovoltaic-driven DACCS reaches the highest LCOD ($1358∼1502/t CO₂) at 1211 annual operating hours, while hydropower-driven systems, benefiting from much longer annual operation (3349 h), achieve both a high average CRE (78 %) and a significantly lower LCOD ($529∼622/t CO₂). (3) Coastal provinces such as Guangxi and Guangdong, where waste hot water and nuclear power are accessible, offer the optimal balance between low LCOD ($243∼249/t CO₂) and high CRE (&gt;97 %). Additionally, regions such as Yunnan (hydropower), Inner Mongolia (wind power), and Chongqing (photovoltaic power) demonstrate strong potential for renewable energy-driven DACCS deployment.</div></div>","PeriodicalId":334,"journal":{"name":"International Journal of Greenhouse Gas Control","volume":"146 ","pages":"Article 104440"},"PeriodicalIF":5.2,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144771543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}