Journal of CO2 Utilization最新文献

{"title":"Supercritical CO2 extraction of lingonberry (Vaccinium vitis-idaea) pomace: Optimization studies using response surface methodology, and extraction kinetics","authors":"Manthila Perera ,&nbsp;Veli-Matti Taavitsainen ,&nbsp;Santeri Pykäläinen ,&nbsp;Astrid Andersin ,&nbsp;Esko Tirronen ,&nbsp;Pekka Oinas ,&nbsp;Rofice Dickson","doi":"10.1016/j.jcou.2026.103349","DOIUrl":"10.1016/j.jcou.2026.103349","url":null,"abstract":"<div><div>The lipophilic extracts of lingonberry pomace have important applications in cosmetics, food-grade coatings and films, and other food engineering processes due to their antimicrobial, antioxidant, and hydrophobic properties. In this study, supercritical carbon dioxide extraction (Sc-CO₂) was employed to recover valuable lipophilic components from lingonberry pomace. Experiments were designed using the Design of Experiments (DOE) approach. To optimize the extraction conditions, Response Surface Methodology (RSM) was used at experimental ranges with pressure of 190–310 bar, temperature of 38–62 °C, and CO₂ flow rate of 9–21 g/min. Optimization showed that the highest yield of 4.22 wt% was achieved under conditions of 276 bar, 62 °C, and 21 g/min with an extraction time of 380 min. The extraction yield was significantly influenced by the linear effects of CO₂ flow rate and pressure, along with the negative quadratic effect of pressure. Temperature displayed only marginal influence, through its interaction with flow rate. The overall extraction curves (OEC) were developed and well described by spline fitting, and kinetic parameters and the mass transfer coefficients were derived from the experimental data. Both the kinetic parameters and calculated mass transfer coefficients were positively and predominantly influenced by CO₂ flow rate. The observed kinetic behaviour indicated that the extraction process was primarily limited by internal diffusion. These findings on extraction kinetics facilitate the estimation of initial batch cycle durations and provide a basis to define scale‑up criteria essential for process scale-up and subsequent economic evaluations.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103349"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of BaO/Nd2O3/Co catalyst for efficient hydrogen-based fuels production via inverse design strategy","authors":"Hubert Ronduda ,&nbsp;Wojciech Patkowski ,&nbsp;Michał Młotek ,&nbsp;Elżbieta Truszkiewicz ,&nbsp;Andrzej Ostrowski ,&nbsp;Kamil Sobczak ,&nbsp;Artur Małolepszy ,&nbsp;Wioletta Raróg-Pilecka","doi":"10.1016/j.jcou.2026.103350","DOIUrl":"10.1016/j.jcou.2026.103350","url":null,"abstract":"<div><div>Hydrogen is considered one of the most promising energy carriers, allowing for more sustainable and efficient energy solutions. However, hydrogen storage remains a formidable challenge in utilizing hydrogen to generate clean energy. To overcome these challenges, various hydrogen-based storage materials have been explored. Ammonia is currently regarded as a preeminent candidate due to its high hydrogen content and energy density. Herein, we report the development of a cobalt-based catalyst loaded with barium and neodymium oxide promoters, featuring an inverse oxide/metal configuration, for hydrogen-based fuels production. Unlike conventional supported catalysts, in which the metal is dispersed on the support, the inverse catalyst design involves loading promoters onto the metal, forming an oxide-on-metal structure with enhanced metal–oxide interfacial interactions. The developed catalyst exhibited high catalytic activity for ammonia synthesis, outperforming the commercial fused iron catalyst. Moreover, it exhibited superior performance in ammonia decomposition and carbon oxides hydrogenation, confirming its versatility. Comprehensive characterization studies have revealed that the inverse oxide/metal structure induces strong electronic interactions between cobalt and promoter oxides, facilitating reactant activation and thereby improving catalytic performance. This study demonstrates that the inverse oxide/metal design represents a rational strategy for developing efficient catalysts, offering a pathway toward sustainable hydrogen-based fuels production under environmentally friendly conditions.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103350"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CO2 and steam-CO2 reforming of ethanol over CuО/Al2O3 catalysts: Influence of additives on catalyst coking","authors":"Gaukhar Yergaziyeva ,&nbsp;Moldir Anissova ,&nbsp;Nursaya Makayeva ,&nbsp;Laura Myltykbayeva ,&nbsp;Manshuk Mambetova ,&nbsp;Zhengisbek Kuspanov ,&nbsp;Chingis Daulbayev ,&nbsp;Madina Bissenova","doi":"10.1016/j.jcou.2026.103333","DOIUrl":"10.1016/j.jcou.2026.103333","url":null,"abstract":"<div><div>The effect of γ-Al₂O₃ modification with CeO₂ and La₂O₃ oxides on the catalytic and performance characteristics of copper catalysts in CO₂ reforming and steam–CO₂ reforming of ethanol is investigated. Catalysts with compositions of 10 wt% CuO/Al₂O₃, 10 wt% CuO/2 wt% CeO₂–Al₂O₃ and 10 wt% CuO/2 wt% La₂O₃–Al₂O₃ were synthesized, characterized by TPD-CO₂, TPR-H₂, TPO, TGA/DTA and XRD techniques, and tested in the temperature range of 500–800 °C. The addition of La₂O₃ was shown to generate the strongest basic sites and suppress the formation of the CuAl₂O₄ spinel phase, resulting in an optimal combination of high CO₂ conversion (95 %), maximum hydrogen concentration (55.3 vol%), and minimal coking under steam–CO₂ reforming conditions. In contrast, CeO₂ addition enhances oxygen mobility and promotes ethanol dehydration activity but leads to the highest ethylene yield (67.5 vol%) and the greatest coke deposition (167 mgC/gcat), particularly in the presence of steam. A linear correlation (R² ≈ 0.98) between ethylene yield and the amount of deposited carbon was identified, indicating the key role of ethylene as a coke precursor in the investigated systems. Thermogravimetric analysis of spent catalysts revealed that the La-modified catalyst accumulated the lowest amount of predominantly reactive carbon species and exhibited the lowest deactivation rate. The obtained results establish the relationship between basicity, redox properties, and coking tendency in CuO/Al₂O₃–CeO₂/La₂O₃ systems, providing a rational basis for the design of stable copper catalysts for ethanol reforming with simultaneous CO₂ utilization.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103333"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering long-term antibacterial PLA packaging: Controlled release of thymol co-amorphous pairs via supercritical solvent impregnation","authors":"Adrián Rojas ,&nbsp;Irena Zizovic ,&nbsp;Paulina Cheuquepan ,&nbsp;Hans Lagos ,&nbsp;Mariusz Nowak ,&nbsp;Gonzalo Aguila ,&nbsp;María Galotto ,&nbsp;Ximena Valenzuela","doi":"10.1016/j.jcou.2026.103341","DOIUrl":"10.1016/j.jcou.2026.103341","url":null,"abstract":"<div><div>The rapid release of active compounds often limits the development of active food packaging with long-term antimicrobial effects. This study proposes an innovative and sustainable solution by integrating cocrystallization and supercritical fluid technologies to create a controlled-release system. Herein is investigated the impregnation of poly(lactic acid) (PLA) foams with thymol (THY) - phenazine (PHE) cocrystal pairs via supercritical solvent impregnation at 40 °C and 12–18 MPa, analyzing the impact of different isobaric cooling rates (0.3 and 1.5 °C/min) on particle deposition and release kinetics. Submicron THY-PHE co-amorphous pairs were successfully deposited within the PLA matrix, with particle size dependent on the cooling rate. These pairs exhibited significantly slower release kinetics than pure THY, with a release rate constant up to 12 times lower. Consequently, PLA foams loaded with THY-PHE pairs demonstrated prolonged antibacterial activity, completely inhibiting <em>Staphylococcus aureus</em> and <em>Escherichia coli</em> for up to 192 h with concentrations three times lower than those required for pure THY. This work presents a robust, environmentally friendly, method for engineering advanced packaging materials with tailored, long-term release of active agents.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103341"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boron-driven oxygen-vacancy enrichment and VOX dispersion in SAPO-34 for robust CO2-ODHP","authors":"Reza Asadi,&nbsp;Jafar Towfighi Darian,&nbsp;Masoud Safari Yazd","doi":"10.1016/j.jcou.2026.103352","DOIUrl":"10.1016/j.jcou.2026.103352","url":null,"abstract":"<div><div>We report a boron-modified vanadia@SAPO-34 catalyst (V@SP-B) that integrates Lewis-acidic B^3 + sites with redox-active VO_X species to enhance CO₂-assisted oxidative dehydrogenation of propane (CO₂-ODHP). The catalyst, synthesized via H₃BO₃ etching and VO(acac)₂ impregnation, forms a hierarchical micro–mesoporous nanoreactor. XRD confirms CHA framework retention with smaller crystallites (31 vs 37 nm), while FT-IR and Raman reveal new B–O/B–O–B bonds, intensified V<img>O vibrations, and vacancy markers indicating increased defect density. HR-XPS shows framework reorganization with higher B³⁺ incorporation (66 %), elevated V⁴⁺/V⁵⁺ ratio (1.3), and a significantly higher oxygen-vacancy ratio (OV/OL = 2.4). Textural analysis demonstrates enhanced surface area (515 m² g⁻¹) and pore volume (0.46 cm³ g⁻¹). Redox and acid–base studies confirm easier reducibility, stronger hydrogen spillover, enhanced dispersion of active sites (11.4 %), increased acidity (828 µmol g⁻¹), and improved CO₂ binding (155 µmol g⁻¹). MD simulations support these findings, revealing stronger CO₂ adsorption and lower vacancy formation and reaction barriers. Catalytically, at 550 °C and C₃H₈/CO₂ = 2, V@SP-B achieves 18.1 % conversion, 13.7 % yield, and ∼77 % selectivity, maintaining stability over 36 h. The study establishes a direct structure–property–performance relationship driven by boron-induced acid–redox synergy, oxygen-vacancy enrichment, and hierarchical porosity for selective, durable CO₂-ODHP.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103352"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ferrocene-linked triazine-based porous organic polymers as multifunctional platforms for CO2 recognition, separation and utilization","authors":"Mohamed Gamal Mohamed ,&nbsp;Wei-Chun Huang ,&nbsp;Mohsin Ejaz ,&nbsp;Yang-Chin Kao ,&nbsp;Yen-Min Lo ,&nbsp;Ahmed A.K. Mohammed ,&nbsp;Yen-Ling Kuan ,&nbsp;Shiao-Wei Kuo","doi":"10.1016/j.jcou.2026.103356","DOIUrl":"10.1016/j.jcou.2026.103356","url":null,"abstract":"<div><div>The development of efficient materials that can capture CO₂ and catalyze its conversion into value-added organic compounds is critically important. The concept of CO₂ Capture and Utilization (CCU) is gradually gaining the attention of researchers. In this study, we designed and synthesized ferrocene and triazine-based porous organic polymers (POP), named FC-TPT-POP and FC-TPT-Ph-POP, through a Schiff base reaction for CO₂ capture, and utilized them as catalysts to transform CO₂ and various epoxides into cyclic carbonates via a cycloaddition process. The FC-TPT-POP showed high surface area (797 m² g⁻¹) and microporosity. The presence of high surface area, porosity, and triazine units having nitrogen basic sites showed excellent selective CO₂ capture (3.34 mmol g⁻¹ at 1 bar pressure/273 K, <em>Q</em>_<em>st</em> of 34 kJ mol⁻¹). Both POPs show strong CO₂ selectivity at low pressures due to interactions between nitrogen sites and the highly polar, high-quadrupole CO₂ molecules. FC-TPT-POP outperforms FC-TPT-Ph-POP, achieving a CO₂/N₂ selectivity of about 40 at 273 K. Moreover, it demonstrates outstanding catalytic performance in transforming simple terminal epoxides into cyclic carbonates using CO₂ as a reactant. For example, under mild conditions (120 °C, 400 psi, 8 h), FC-TPT-POP achieved a high conversion of 99.5 % toward propylene oxide (PO). The catalytic effect arises from the synergistic interaction of Lewis basic nitrogen atoms in the triazine units and the metal active sites of ferrocene. Therefore, the development of ferrocene-triazine-based POP catalysts in this study offers a promising strategy for lowering atmospheric CO₂ levels through efficient capture and catalytic conversion.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103356"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating operating trade-offs in CO2 hydrogenation to methanol: Conversion, energy efficiency, and techno-economic implications","authors":"Giovana Chinaglia Tonon Petrielli,&nbsp;Rubens Maciel Filho","doi":"10.1016/j.jcou.2026.103359","DOIUrl":"10.1016/j.jcou.2026.103359","url":null,"abstract":"<div><div>The direct hydrogenation of carbon dioxide (CO₂) to methanol presents a promising approach to mitigate atmospheric CO₂ levels while producing a valuable chemical feedstock. However, the technical and economic feasibility of renewable methanol is still under evaluation, making it essential to identify optimal operational conditions and develop predictive models to enhance its competitiveness. This study investigates the optimization of the methanol production process via CO₂ hydrogenation in a conventional catalytic reactor, combining simulation and statistical analysis to enhance both CO₂ conversion and energy conversion efficiency (ηPtF). Aspen Plus simulations were conducted under varying pressures, temperatures, and hydrogen-to-CO₂ feed ratios<strong>,</strong> and response surface methodology (RSM) was applied to identify optimal conditions. The results revealed that the maximum CO₂ conversion (91.1 %) occurs at 83 bar, 247°C, and a hydrogen-to-CO₂ ratio of 5:1, while the optimal ηPtF (58.4 %) is achieved at 50 bar, 210°C and a ratio of 3:1. A techno-economic assessment shows that the high-conversion scenario demands substantially higher hydrogen recycle and compression, increasing capital and operating costs. In contrast, the ηPtF-optimized condition offers lower energy demand and improved economic performance. CO₂ conversion and ηPtF reached values comparable to or exceeding those in state-of-the-art studies, while highlighting the trade-off between maximizing conversion and optimizing energy efficiency. This underscores the need for tailored operating conditions. The generated surrogate models accurately predict the process outcomes, offering valuable insights for future studies, and demonstrating the potential for different economic and energy outcomes depending on the optimization strategy.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103359"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mineral carbonation: Thermal activation of serpentine as flexible component in energy systems","authors":"Sampo Mäkikouri ,&nbsp;Marjut Mälkki ,&nbsp;Timo Leino ,&nbsp;Juho Kauppinen ,&nbsp;Fanni Hakanen ,&nbsp;Henrik Tolvanen","doi":"10.1016/j.jcou.2026.103353","DOIUrl":"10.1016/j.jcou.2026.103353","url":null,"abstract":"<div><div>In this article, the thermal activation of serpentine for mineral carbonation using an electrically heated fluidised bed was studied. This process step is combined into a novel process configuration with rapid thermal activation and a thermal energy storage. For the studied serpentinite mine tailings, the thermal activation durations corresponding with desired mineralogical changes were &lt; 2 min at 700 °C, 4–8 min at 650 °C, 16–75 min at 600 °C and &gt; 75 min at 550°C, improving reaction kinetics compared to chamber furnace processing at 650°C for 30 min or 750 °C for 15 min. In all fluidised bed experiments, the preferred mineralogical changes corresponded to a dehydroxylation degree of 52–72 % determined with simultaneous thermal analysis. Fourier-transform infrared analyser was used for online determination of the dehydroxylation degree and could be used for process control if the measurement delay was considered better. The mass and energy balances for an industrial-scale thermal activation plant matching 100,000 tCO₂/a storage were calculated. The average electrical power demand was 17.4 MW, of which 22.9 % was recovered from steam and 61.7 % was stored in the thermal energy storage silos. Twelve-hour and 7-day buffering times resulted in silo volumes of 452.5 m³ and 3167 m³ and thermal energy storage capacities of 129.0 MWh and 903.2 MWh, respectively. Further studies should include process parameter optimisation as well as techno-economic and life cycle assessments to holistically improve the concept.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103353"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable CO2 fixation under low CO2 pressure, solvent free conditions using a recyclable Zn-dehydroacetic acid catalyst supported on SBA-15","authors":"Salimeh Nazari Mazidi,&nbsp;Elham Safaei","doi":"10.1016/j.jcou.2026.103320","DOIUrl":"10.1016/j.jcou.2026.103320","url":null,"abstract":"<div><div>A heterogeneous catalyst has been synthesized by immobilizing a zinc complex of the bio- derived dehydroacetic acid (DHA) ligand onto SBA-15. This catalyst was characterized by BET, XPS, FTIR, TGA, TEM, SEM, XRD, and ICP-OES, which confirmed the successful incorporation of Zn-DHA complex into the SBA-15. In combination with KI (3 mol%) as simple and inexpensive co-catalyst, the minimal amount (20 mg) of the catalyst, promoted the solvent free cycloaddition of CO₂ to epoxides at 50 °C under ambient to low CO₂ pressure (2 bar to balloon). This mesoporous catalyst exhibited excellent activity and selectivity across a broad substrate scope and could be reused for six cycles, with minimal loss in performance. Hot filtration test and ICP analysis confirmed the structural stability and heterogeneous nature of the catalytic process with negligible leaching. A key distinguishing feature of this catalyst is the modulation of Lewis acidity at Zn(II) center by the oxygen-rich DHA ligand, promotes catalyst dispersibility and improves epoxide activation. Notably, this cost-effective and reusable catalyst system avoids high CO₂ pressure and costly quaternary ammonium salts, significantly improving sustainable CO₂ valorization and practical applicability.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103320"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 CO2 absorption into monoethanolamine solution in a rotating packed bed","authors":"Jaesu Jang ,&nbsp;Gwan Hong Min ,&nbsp;Sung Chan Nam ,&nbsp;Kibong Lee ,&nbsp;Sunghoon Lee","doi":"10.1016/j.jcou.2026.103345","DOIUrl":"10.1016/j.jcou.2026.103345","url":null,"abstract":"<div><div>Conventional packed bed (PB) absorbers for post-combustion CO₂ capture are hindered by large equipment size and high regeneration energy. Rotating packed bed (RPB) has emerged as a promising alternative by intensifying mass transfer and reducing process footprint. In this study, a lab-scale RPB system employing high-concentration monoethanolamine (MEA) solutions at concentrations of 30–70 wt% was investigated for CO₂ absorption. Sensitivity analysis was conducted by varying motor speed (300–800 RPM), liquid flow rate, gas flow rate (3–6 Nm³/h), and reboiler temperature, while maintaining a CO₂ capture efficiency of 90 %. The results revealed that higher motor speeds and concentrated MEA solutions enhanced mass transfer and cyclic capacity, while reducing overall power consumption. In addition, an optimal L/G ratio of 6.90 L/m³ minimized the total energy demand, while a regeneration temperature of 102 °C was found to be the minimum required. Lastly, the electricity consumption of the RPB was measured and compared with the regeneration energy in the stripper to evaluate the relative magnitude of the RPB power usage. As a result, the electrical energy consumption of the RPB accounted for about 2 % less than the heat duty required by the reboiler. This study demonstrates that an RPB-based CO₂ capture system outperforms a PB despite its reduced packing height and reactor volume. The use of highly concentrated MEA solutions further enhances RPB process intensification, offering valuable guidance for industrial-scale CO₂ capture system design and optimization.</div></div>","PeriodicalId":350,"journal":{"name":"Journal of CO2 Utilization","volume":"105 ","pages":"Article 103345"},"PeriodicalIF":8.4,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}