Carbon Capture Science & Technology最新文献

{"title":"Incorporation of rigid supramolecular sulfobutyl-ether-beta-cyclodextrin (SBECD) as nanocavities in polybenzimidazole (PBI) for effective H2/CO2 separation","authors":"Zelalem Gudeta Abdi ,&nbsp;Fan Feng ,&nbsp;Qing-Yun Chou ,&nbsp;Ching-Han Chou ,&nbsp;Yueh-Han Huang ,&nbsp;Jyh-Chien Chen ,&nbsp;Tai-Shung Chung","doi":"10.1016/j.ccst.2026.100639","DOIUrl":"10.1016/j.ccst.2026.100639","url":null,"abstract":"<div><div>The increasing demand for efficient CO₂ separation from hydrogen (H₂) production streams has intensified the R&amp;D for advanced energy-efficient separation technologies. Polymer-based membrane separations present a promising solution; however, their practicability remains limited by their inherently low H₂ permeability and modest H₂/CO₂ selectivity. This study presents a novel approach that incorporates supramolecular sulfobutyl-ether-beta-cyclodextrin (SBECD) molecules into a polybenzimidazole (PBI) matrix to fabricate high-performance PBI-SBECD membranes. The uniformly dispersed bulky SBECD structure in PBI not only disrupts the close chain packing of PBI but also increases the overall fractional free volume (FFV). This “host-like” modulation of free volume generates additional molecular sieving sites that favor smaller H₂ molecules over larger CO₂, thereby improving H₂/CO₂ separation performance. The resulting membranes exhibited significance enhancements in both H₂ permeability and H₂/CO₂ selectivity compared to the original PBI. In particular, the PBI-SBECD (6%) membrane, prepared with a SBECD loading of 6 wt.%, achieved an H₂ permeability of 13.56 Barrer and an H₂/CO₂ selectivity of 20.23 tested at 50 ° C and 6 atm. It is a 180% increase in H₂ permeability and a 121% enhancement in H₂/CO₂ selectivity compared to the pristine PBI membrane. It also exceeds the 2008 Robeson upper bound for H₂/CO₂ separation. Moreover, its mixed-gas performance for H₂/CO₂ separation also remained significantly above the upper bound and was comparable to the leading PBI-based and other representative membranes reported in literature, underscoring the effectiveness of the SBECD supramolecular cavities in facilitating size-sieving transport pathways. The design strategy proposed in this study would establish a solid technical foundation for the molecular integration of cyclodextrin with PBI and offers an innovative route to fabricate next-generation polymeric membranes for highly effective H₂/CO₂ separation at a moderate temperature.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"19 ","pages":"Article 100639"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148167866","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":"A new energy-efficient process for carbon capture from flue gases and biogas at atmospheric pressure using physical absorption in cross-flow hollow fiber membrane contactors","authors":"Yakoub Laidani,&nbsp;Youness Bouri,&nbsp;Fares Si Tayeb,&nbsp;Jean-François Portha,&nbsp;Sabine Rode","doi":"10.1016/j.ccst.2026.100634","DOIUrl":"10.1016/j.ccst.2026.100634","url":null,"abstract":"<div><div>A new carbon capture process operating at atmospheric pressure has been designed and modeled. The process is based on physical absorption using cross-flow hollow fiber membrane contactors. Simulations of the separation of CO₂-N₂ and CO₂-CH₄ mixtures using water as a solvent at 5 °C and 20 °C were carried out, demonstrating the suitability of the process for treating combustion gases and purifying biogas. For CO₂-N₂ mixtures at 20°C, with CO₂ inlet mole fractions between 0.09 and 0.35, the energy requirement of the new process, related to vacuum pumping, is between 0.29 and 0.98 GJ per ton of CO₂ captured. This is significantly lower than the reference technology for treating atmospheric flue gases, namely chemical absorption, which requires between 3.0 and 5.5 GJ per ton of CO₂ captured. Refrigeration at 5 °C further reduces energy demand by up to 27%. Considering the geometry of the commercial Liqui-Cel™ EXF hollow fiber membrane modules, the volumetric footprint of the equipment is similar to that used for chemical absorption. The specific energy demand of the process for biogas treatment is between 0.044 and 0.052 kWh per Nm³ of raw biogas. This value is approximately four times lower than the energy demand of current biogas upgrading technologies, which is between 0.2 and 0.3 kWh per Nm³ of raw gas. Given its low energy consumption and small footprint, the membrane process developed in this article, represents a promising advancement in the field of carbon capture technologies.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"19 ","pages":"Article 100634"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148167987","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":"Converting agricultural by-products into a carbon-neutral CO2 capture system: Biomass-ash-enhanced biogas slurry for plant and soil carbon sequestration","authors":"Feihong Liang ,&nbsp;Xianwen Meng ,&nbsp;Te Tu ,&nbsp;Zhan Shi ,&nbsp;Andrea Pezzuolo ,&nbsp;Meng Zhu ,&nbsp;Shuiping Yan ,&nbsp;Qi Feng","doi":"10.1016/j.ccst.2026.100640","DOIUrl":"10.1016/j.ccst.2026.100640","url":null,"abstract":"<div><div>This study develops a regeneration-free CO₂ capture system by integrating alkaline biomass ash with biogas slurry to achieve multiphase carbonation. The process produced three CO₂-rich materials—CO₂-enriched biogas slurry (CRBS), bicarbonate-rich liquid (CRML), and carbonate-rich solid (CRMS)—with dissolved inorganic carbon contents of 150.1 mmol L⁻¹, 230.4 mmol L⁻¹, and 3176.5 mmol kg⁻¹, corresponding to CO₂ capture capacities of 6.6 g L⁻¹, 10.1 g L⁻¹, and 140 g kg⁻¹. When applied to tomato cultivation, CRML and CRMS increased yield by 27.7–35.8% and enhanced root activity and fruit quality. Stable-isotope analysis showed that bicarbonate-derived carbon assimilation increased 3–4 fold, with the fraction of plant carbon from soil bicarbonate (<em>f</em>_B) rising from 0.135 (control) to 0.412–0.500 and soil-derived carbon fixation reaching 32.77 g-C per pot under CRMS. In soil, CRML and CRMS increased inorganic carbon (TIC up to 26.25 g kg⁻¹) and organic carbon (TOC up to 48.60 g kg⁻¹) through carbonate deposition and strengthened organo-mineral associations. These results demonstrate that biomass-ash–enhanced biogas slurry provides a by-product-based, zero-energy CO₂ capture pathway that simultaneously improves plant performance and soil carbon sequestration.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"19 ","pages":"Article 100640"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148230902","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":"Experimental results and mechanistic modelling insights of pilot scale electrochemical CO2 capture demonstration at a refinery","authors":"Sai Hema Bhavya Vinjarapu ,&nbsp;Sara Vallejo Castano ,&nbsp;Fariborz Shaahmadi ,&nbsp;Magor Demeter ,&nbsp;Istvan Gyorbiro ,&nbsp;Rasmus K. Engilbertsson ,&nbsp;Nikki Wallentin Dommer ,&nbsp;Elham Ramin ,&nbsp;Philipp Kuntke ,&nbsp;Mijndert van der Spek ,&nbsp;Madalin-Marian Apostol ,&nbsp;Andreea Nicoleta Marcu ,&nbsp;Ramona Anca Voicu ,&nbsp;Bert V.M. Hamelers ,&nbsp;Philip Loldrup Fosbøl","doi":"10.1016/j.ccst.2026.100632","DOIUrl":"10.1016/j.ccst.2026.100632","url":null,"abstract":"<div><div>This study presents the results of an electrochemically driven CO₂ capture demonstration plant developed within the ConsenCUS project, funded by the EU. The demonstration was conducted using industrial flue gas (CO₂ concentration of 3.5 vol%) from OMVPET, a refinery in Romania. The system integrates flue gas pre-treatment, a potassium carbonate absorption loop, and a bipolar membrane electrodialysis (BMED) stack for solvent regeneration. The demonstration unit is designed to treat flue gas slipstreams of up to 500 Nm³/h, containing 4–18 vol% CO₂. Downstream, a water wash column minimises solvent emissions. The BMED stack, comprising 126 cell pairs, was operated in the range of 150 to 800 A/m², with a K⁺ transport efficiency of 0.5 to 0.8 mol K⁺ /mol e^-, producing acidic and alkaline streams for solvent regeneration. The acidic tank functioned as a flash unit, releasing CO₂ at purities exceeding 98 vol%, while the alkaline stream restored lean solvent alkalinity. Continuous operation with stable integration of capture and regeneration modules was demonstrated for over 500 h. The results confirm that electrochemical solvent regeneration can be scaled to the demonstration level, delivering high-purity CO₂ while avoiding the high-temperature demands of thermal desorption. However, Specific Energy Consumption (SEC) values of 15–45 GJ/tonne CO₂ have been observed due to low water dissociation efficiency. Capture efficiencies in the range of 10 to 90% have been demonstrated. These findings offer critical insights into energy demand, solvent management, and process flexibility, thereby advancing the case for electrochemically enabled low-carbon CO₂ capture technologies.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"19 ","pages":"Article 100632"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148167868","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":"Environmental trade-offs of CO2 mineralization cell by life cycle assessment","authors":"Xinchen Song ,&nbsp;Yunpeng Wang ,&nbsp;Wenchuan Jiang ,&nbsp;Zaijie Wang ,&nbsp;Can Deng ,&nbsp;Zhiyu Zhao ,&nbsp;Cheng Lan ,&nbsp;Liangyu Zhu ,&nbsp;Yifan Wu ,&nbsp;Tao Liu ,&nbsp;Heping Xie","doi":"10.1016/j.ccst.2026.100638","DOIUrl":"10.1016/j.ccst.2026.100638","url":null,"abstract":"<div><div>CO₂ mineralization cell (CMC) is a promising approach for permanent carbon mitigation, enabling CO₂ mineralization using carbide slag to produce high-purity carbonate products while converting mineralization-derived energy into electricity. However, its environmental performance lacks insufficiently quantified because of the complexity of its system boundary. In particular, as CO₂ is emitted during carbide production but consumed during subsequent mineralization, such systems may be intuitively regarded as nearly “zero-sum” or simply classified as a “CaCO₃ cycle”. Meanwhile, the contributions of CO₂ capture, transportation, and process energy consumption have not been consistently accounted for. In this study, a comprehensive and rigorous life cycle assessment (LCA) was conducted to quantify the environmental trade-offs and resource requirements of the CMC system. Mineralizing 1 t CO₂ via the CMC achieves a reduction of -1096.82 kg CO₂ eq, driven by the combined effects of CO₂ mineralization and substitution credits from high purity CaCO₃ production and electricity generation. This demonstrates that the value of the CMC lies not only in CO₂ consumption, but also in its ability to displace more carbon-intensive conventional pathways, revealing an often-overlooked net mitigation effect. Favorable performance is also observed across multiple impact categories, including human carcinogenic toxicity and ecotoxicity. Sensitivity and scenario analyses further reveal that system configuration influences environmental performance, while carbon reduction is maintained under varying CO₂ sources, energy structures, and deployment conditions, reaching up to -1374.75 kg CO₂ eq within the defined boundary. This work provides a transparent, system-level evaluation of the environmental implications of the CMC system and supports more informed assessment and future development of CO₂ mineralization cell.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"19 ","pages":"Article 100638"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148167988","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":"A comprehensive review on advanced zeolite–polymer architectures for high-performance CO2 capture","authors":"Zahra Raeisi-Chehrazi,&nbsp;Fatemeh Bahmanzadegan,&nbsp;Alireza Hemmati,&nbsp;Ahad Ghaemi","doi":"10.1016/j.ccst.2026.100627","DOIUrl":"10.1016/j.ccst.2026.100627","url":null,"abstract":"<div><div>Rising CO₂ emissions continue to intensify the need for scalable, energy-efficient separation technologies for point-source mitigation. Zeolites remain benchmark physisorbents due to their crystalline microporosity, high density of adsorption sites, and molecular sieving; however, their performance frequently deteriorates under humid conditions. Zeolite–polymer composites are emerging as a robust engineering solution to this bottleneck, synergistically coupling the high density of crystalline adsorption sites and molecular sieving of zeolites with the tunable moisture tolerance and reversible chemisorption of polymers. This comprehensive review critically evaluates recent advances in the integration of natural and synthetic zeolites with diverse polymer matrices, including chitosan, polyethyleneimine (PEI), cationic polyelectrolytes, and polyacrylates. We systematically analyze how polymer chemistry, interfacial loading, and spatial distribution govern crucial performance metrics: pore preservation, diffusion resistance, and cyclic stability. Emphasizing exceptional gas separation performance, we highlight state-of-the-art composites such as clinoptilolite@chitosan, which achieves an outstanding CO₂ uptake of 9.01 mmol g⁻¹ at 298 K and 9 bar. Furthermore, optimal polymer impregnation markedly enhances high-temperature performance; for example, MCM-41-PEI architectures (50 wt% loading) deliver 4.89 mmol g⁻¹ at 348 K, representing a 24-fold increase in capacity over the raw support. Beyond capacity, polymer-enabled microstructural engineering can invert traditional selectivity trade-offs, as seen in Na-Y@polyacrylate systems that exhibit a simultaneous 17.9% enhancement in CO₂ affinity alongside a 36.6% suppression of competitive H₂O uptake. By consolidating empirical evidence into a unified mechanistic framework, this review provides crucial design guidelines for optimizing zeolite-polymer interphases, facilitating the rational development of next-generation, moisture-tolerant, and highly recyclable adsorbents with lowered regeneration energy for industrial CO₂ mitigation.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"19 ","pages":"Article 100627"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148167871","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":"Bio-integrated carbon capture and utilization of CO2-to-methane under increasing concentrations of capture agent N-methyl diethanolamine (MDEA)","authors":"Madhuni Madhushika Wijesooriya ,&nbsp;Mathias Eskildsen ,&nbsp;Rubens Perez Calegari ,&nbsp;Jeppe Lund Nielsen ,&nbsp;Michael Vedel Wegener Kofoed","doi":"10.1016/j.ccst.2026.100635","DOIUrl":"10.1016/j.ccst.2026.100635","url":null,"abstract":"<div><div>Conversion of CO₂ to methane (synthetic natural gas) via bio-integrated carbon capture and utilization (BICCU) represents an alternative to conventional CO₂ absorption and subsequent biomethanation. Despite its potential for reducing energy costs associated with carbon capture and conversion, BICCU is constrained by the microbial toxicity of capture agents such as <em>N</em>-methyldiethanolamine (MDEA), which can inhibit methanogenic activity and limit process stability. Knowledge of which microbes are resilient to the effects of MDEA and how this compound interacts with key members of mixed methanogenic communities remains scarce. Therefore, the present study employed a combination of reactor operation and omics-based analyses in a BICCU-to-methane system. The functional basis for microbial conversion of MDEA-captured CO₂ was investigated by monitoring reactor performance and microbial community responses through stepwise increase in CO₂-saturated MDEA feeding. Starting from 30 mmol∙L^-1 MDEA, the reactor produced methane up to 150 mmol∙L^-1, reaching the highest average volumetric methane production rate of 964 NmL∙CH₄ <span>l</span>^-1∙day^-1 at 150 mmol∙L^-1 MDEA. Methane production ceased when MDEA concentration reached 175 mmol∙L^-1. 16S rRNA gene sequencing and long-read metagenomics identified <em>Methanothermobacter wolfei</em> and a candidate of the genus <em>Methanobacterium</em> as dominant methanogens, performing hydrogenotrophic methanogenesis, the key pathway for methane production throughout the operation. The increase in MDEA concentrations exerted a distinct selective pressure on the bacterial community, allowing <em>Proteus vulgaris</em> to become dominant. Interestingly, the dominant bacterial taxa did not harbor genes associated with acetate production via the CO₂-to-acetate formation through the Wood-Ljungdahl pathway. These findings show that progressive MDEA exposure can enrich tolerant methanogenic consortia and define a practical concentration threshold for stable BICCU-to-methane operation.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"19 ","pages":"Article 100635"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148167986","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":"Considerations beyond CO₂ reduction: Life-cycle environmental trade-offs of CCUS technologies for decarbonizing cement and concrete","authors":"D.K. Panesar,&nbsp;A. Ali","doi":"10.1016/j.ccst.2026.100631","DOIUrl":"10.1016/j.ccst.2026.100631","url":null,"abstract":"<div><div>Carbon capture, utilization, and sequestration (CCUS) technologies are increasingly central to achieving deep decarbonization in the cement and concrete industry, particularly given the sector’s process emissions and rising global demand. Based on nineteen cement and concrete decarbonization reports and roadmaps representing countries or regions in five continents, CCUS is projected to account for approximately 24–60% of total CO₂ abatement by the year 2050 (or 2060), with early deployment anticipated within the years 2025 and 2030. Eight CCUS pathways (oxyfuel combustion, mineralization, direct air capture, direct separation, calcium looping, membranes, adsorption, and absorption) are examined with respect to their technological readiness, capture performance, cost ranges, and integration potential throughout life-cycle stages of cement and concrete. Although CCUS technologies provide global warming potential benefits, none deliver uniform benefits to other environmental impact categories. Therefore, CCUS technologies risk the potential for burden-shifting to environmental impacts such as energy use, eutrophication, acidification, human toxicity, and water use. Such environmental impacts are largely driven by energy intensity, sorbent and solvent degradation cycles, and/or material replacement demands. Direct separation emerges as a comparatively streamlined pathway with relatively few cross-category burdens, whereas calcium looping, absorption, and direct air capture exhibit the largest multi-impact penalties. An integrated life-cycle–informed deployment strategy that combines CCUS technologies with renewable energy, electrification, and optimized material flows has potential to address the urgency of the challenge and in parallel the potential to reduce the risk of offsetting CCUS CO₂ reductions with environmental impact trade-offs, burden shifting and/or pollution displacement.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"19 ","pages":"Article 100631"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148167867","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":"Low-Carbon Propylene Production using Chemical Looping Technology: A Comparative Study","authors":"Ghadeer Alhamar ,&nbsp;Adam Zaidi ,&nbsp;Isabel Pazmiño-Moyorga ,&nbsp;Vincenzo Spallina","doi":"10.1016/j.ccst.2026.100617","DOIUrl":"10.1016/j.ccst.2026.100617","url":null,"abstract":"<div><div>In this work, two chemical looping dehydrogenation processes, namely chemical looping oxy-dehydrogenation and chemical looping dehydrogenation, are presented and compared with the conventional propane-to-propylene catalytic route in terms of process efficiency, CO₂ emissions and costs through process simulation and techno-economic assessment. The chemical looping dehydrogenation achieves a conversion (per step) of 35% and selectivity of 93%, while the oxy-dehydrogenation shows a conversion of 15% and selectivity of 67%. As a result of these per-pass conversions, the downstream process purification has been designed accordingly. Compared to the conventional process, the chemical looping dehydrogenation could reduce CO₂ emissions by 28% (0.98 vs 1.37 ton_CO2/ton_C3H6 of the benchmark propane dehydrogenation) due to the inherent CO₂ concentration during reduction, which delivers CO₂ at high purity, unlike conventional furnaces. In terms of price, chemical looping dehydrogenation would reach a cost saving of 30 £/ton_C3H6 (4% lower). In case of the chemical looping oxy-dehydrogenation, the lower C₃H₆ yield exhibited is reflected in no saving in terms of CO₂ emissions (1.4 ton_CO2/ton_C3H6) with a cost increase above 23% (1023 £/ton_C3H6), making this configuration not of interest for industrial application unless a substantial improvement in material development.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"19 ","pages":"Article 100617"},"PeriodicalIF":0.0,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148167984","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":"Additive manufacturing of architected Ca(OH)2 monoliths for accelerated CO2 mineralization","authors":"Injun Park ,&nbsp;Sunwoo Kim ,&nbsp;Byeongju Jeon ,&nbsp;Huiryung Heo ,&nbsp;Siyoung Q. Choi ,&nbsp;Jay H. Lee ,&nbsp;Dong-Yeun Koh","doi":"10.1016/j.ccst.2026.100568","DOIUrl":"10.1016/j.ccst.2026.100568","url":null,"abstract":"<div><div>Effective CCU technologies demand robust, scalable sorbents with high CO₂ selectivity and capacity. While calcium hydroxide (Ca(OH)₂) offers high CO₂ uptake via mineral carbonation, its practical application is hindered by slow reaction kinetics and difficulties in forming mechanically stable, structured beds. Here, we report a direct ink writing (DIW) approach to fabricate 3D-printed Ca(OH)₂ monoliths using water-based inks formulated with carboxymethyl cellulose (CMC). Under humid conditions (RH95, 1–10 mol % CO₂), the monolith achieves &gt;99 % conversion to calcium carbonate, with similarly strong performance maintained at 400 ppm CO₂ relevant to direct air capture (DAC). The structured sorbent also exhibits extremely low pressure drop (∼2 Pa/cm), making it suitable for scaled-up applications. A techno-economic analysis (TEA) for the DAC case, incorporating parallel nozzle printing, shows that the levelized cost of capture (LCOC) can be reduced to 339 US$/tCO₂, with break-even scenarios attainable through carbon subsidies or high-value reuse of the monolith reuse. Overall, this work establishes a dry, scalable pathway for fabricating reactive structured Ca(OH)₂ sorbents for CCU applications.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"18 ","pages":"Article 100568"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145972758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}