Carbon Capture Science & Technology最新文献

{"title":"Mass granulation of Al-promoted CaO-based sorbent via moulding-crushing methods for cyclic CO2 capture","authors":"Tao Jiang ,&nbsp;Joe Yeang Cheah ,&nbsp;Zetong Liu ,&nbsp;Zhaojie Fang ,&nbsp;Xinyi Guan ,&nbsp;Yue Wang ,&nbsp;Shengping Wang ,&nbsp;Xinbin Ma","doi":"10.1016/j.ccst.2024.100321","DOIUrl":"10.1016/j.ccst.2024.100321","url":null,"abstract":"<div><div>Calcium looping (CaL) process, as an effective way to achieve CO₂ mitigation from high-temperature flue gas streams, is one of the most promising alternatives to amine scrubbing (a well-established technology for industrial post-combustion CO₂ capture). CaO sorbent is considered to be an ideal CO₂ adsorption material. Moreover, the development of granulation/pelletization techniques along with the mass preparation of the CaO-based sorbent is imperative for realistic large-scale applications. This work proposes two practicable moulding-crushing techniques for the scale-up granulation of CaO-based sorbents, in which the kilogram-scale produced Al-promoted CaO-based sorbent powders were first moulded and subsequently crushed into the granules of target sizes. Three types of organic acids–acetic acid, citric acid and malonic acid were employed as peptizing agents to optimize the granulation process. As a result, the anti-attrition properties and compressive strength of the synthetic sorbents were elevated owing to the introduction of an appropriate amount of acetic or malonic acid, for it expedited the disintegration of the pseudo-boehmite (served as binder agent) particles into sol particles, which allowed for tighter bonding of sorbent particles. In addition, corncob powder acted as a pore-forming agent, enhancing the porous structure of the sorbent particles due to the gases released from the thermal decomposition of organic groups during calcination. Nevertheless, the results revealed that the porous and loose structure adversely affected the mechanical strength of the granules.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100321"},"PeriodicalIF":0.0,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Available data and knowledge gaps of the CESAR1 solvent system","authors":"Diego Morlando ,&nbsp;Vanja Buvik ,&nbsp;Asmira Delic ,&nbsp;Ardi Hartono ,&nbsp;Hallvard F. Svendsen ,&nbsp;Hanne M. Kvamsdal ,&nbsp;Eirik F. da Silva ,&nbsp;Hanna K. Knuutila","doi":"10.1016/j.ccst.2024.100290","DOIUrl":"10.1016/j.ccst.2024.100290","url":null,"abstract":"<div><div>Amine-based chemical absorption stands out as the leading technology for post-combustion CO₂-capture. A blend of 3 M 2-amino-2-methyl-1-propanol (AMP) and 1.5 M piperazine (PZ), also known as CESAR1, has proven to outperform the current benchmark ethanolamine (MEA), exhibiting better energy performance and lower degradation rates. This review aims to gather all the experimental laboratory and pilot available data for CESAR1 and its constituent components. Experimental gaps to develop reliable process models are detected and future experiments are proposed. An overview of the knowledge related to amine and degradation compound emissions and environmental impacts of CESAR1, together with hands-on experience in operating the solvent, is presented in this review.</div><div>The main findings of the review are that sufficient physical properties, N₂O-solubility, and speciation data for the CESAR1 solvent are not available in the open literature, even though necessary for the development of reliable process models. A review of the degradation compounds for AMP, PZ and AMP/PZ blends outlines that the nitrogen balance for AMP and PZ is not closed, meaning that there still are compounds that need identification and quantification in the degraded solvent. Given the higher volatility of AMP compared to MEA, a better understanding of the formation and behaviour of aerosol and gas phase emissions is required. A review of pilot plant campaigns for AMP/PZ blends shows that CESAR1 performs better in terms of energy compared to MEA and degrades less. There is, however, the need for high-quality pilot campaigns where all data needed for process model validation is provided for the scientific community. Finally, amine emission mitigation strategies and data on the environmental impact and toxicity of AMP and PZ are presented and discussed.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100290"},"PeriodicalIF":0.0,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergizing black gold and light: A comprehensive analysis of biochar-photocatalysis integration for green remediation","authors":"Iltaf Khan ,&nbsp;Samreen Sadiq ,&nbsp;Ping Wu ,&nbsp;Muhammad Humayun ,&nbsp;Sami Ullah ,&nbsp;Waleed Yaseen ,&nbsp;Sikandar Khan ,&nbsp;Abbas Khan ,&nbsp;Rasha A. Abumousa ,&nbsp;Mohamed Bououdina","doi":"10.1016/j.ccst.2024.100315","DOIUrl":"10.1016/j.ccst.2024.100315","url":null,"abstract":"<div><div>Biochar is a porous, high-surface-area, black carbon-rich product that offers a cost-effective and environmentally friendly option to replace conventional charcoal. However, its specific structure and limited biodegradability pose challenges for its widespread applications. Photocatalysis is suggested as an alternative approach to harness solar energy and transform it into solar fuels. Interestingly, nanomaterials-based photocatalysts with tailored energy band properties and non-toxic characteristics, high surface areas, enhanced stability, and tunable pore sizes, have gained attention for their potential in diverse applications. Therefore, existing research on biochar-based photocatalysis systems (BBPs) aims to address different environmental issues. Interestingly, BBPs offer benefits such as excellent electrical conductivity, versatile functional groups, large surface area, and multiple surface-active sites, promoting high charge mobility, electron reservoir, superior charge separation, and small bandgap. This review provides a comprehensive overview of BBPs developments, including synthesis methods and properties. The fusion of BBPs is used in CO₂ conversion, photocatalytic H₂ generation, CO₂ reduction, pollutants, dyes, and pharmaceutical degradation. Although the intermarriage of BBPs has potential benefits, their effectiveness may be compromised when modified photocatalysts are incorporated, which may negatively influence carrier generation efficiency and overall performance. Therefore, there is empty room for further research on their physical properties, effectiveness, long-term stability, and reusability of BBPs.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100315"},"PeriodicalIF":0.0,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CO2 absorption performance of biogas slurry enhanced by biochar as a potential solvent in once-through CO2 chemical absorption process","authors":"Yizhong Duan ,&nbsp;Yang Liu ,&nbsp;Haonan Liu ,&nbsp;Zhan Shi ,&nbsp;Xinran Shen ,&nbsp;Xiantong Sun ,&nbsp;Shixin Zhao ,&nbsp;Shuiping Yan ,&nbsp;Feihong Liang","doi":"10.1016/j.ccst.2024.100317","DOIUrl":"10.1016/j.ccst.2024.100317","url":null,"abstract":"<div><div>Carbon capture, utilization, and storage (CCUS), offers a promising avenue for mitigating CO₂ emissions, in which the big challenge is the high CO₂ capture cost. A novel CCUS technology called once-through CO₂ chemical absorption using biogas slurry, could potentially reduce the CO₂ capture cost through decreasing the energy consumption greatly during CO₂ capture. This technology, however, is constrained by the CO₂ absorption capacity of biogas slurry. To enhance the CO₂ capture capacity of this innovative technology, we proposed a method to enhance CO₂ absorption by integrating biochar into biogas slurry. Results indicated that the CO₂ absorption capacity of biogas slurry improved by biochar varied with the type of biochar adopted. Among all the investigated biochar, the wood biochar like sea buckthorn and sand willow exhibited the lowest CO₂ capture enhancement, with 0.82±0.19 mmol/g and 0.81±0.30 mmol/g, respectively. Biochar from C4 plants like corn stalks and cobs demonstrated the highest enhancement, with 2.11±0.24 mmol/g and 2.47±0.86 mmol/g, respectively. The enhancement driven by C3 plant biochar like millet stalks and shells was intermediate, with 1.62±0.47 mmol/g and 1.62±0.46 mmol/g, respectively. The primary factor for promoting CO₂ absorption in the biochar-based biogas slurry was the increase in pH of biogas slurry. The total pore volume of biochar was the principal material property that enhanced CO₂ absorption, followed by the EC and BET surface areas of biochar. Increasing the carbonization temperature of biochar could also enhance the CO₂ absorption capacity by biogas slurry. In CO₂-rich biochar-based biogas slurry, CO₂ primarily existed as HCO₃⁻ and carbamate. However, for the influence of the biochar's pore structure, CO₂ in the CO₂-rich biochar-based biogas slurry was more stable than that in CO₂-rich biogas slurry.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100317"},"PeriodicalIF":0.0,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CO2 electrochemical reduction to formic acid: An overview of process sustainability","authors":"Zeyad M. Ghazi ,&nbsp;Dina Ewis ,&nbsp;Hazim Qiblawey ,&nbsp;Muftah H. El-Naas","doi":"10.1016/j.ccst.2024.100308","DOIUrl":"10.1016/j.ccst.2024.100308","url":null,"abstract":"<div><div>CO₂ Electrochemical Reduction (CO₂ ECR) is a promising technology that converts CO₂ into value-added products, including formic acid, ethanol, and methanol, by applying external voltage. This technology is not only considered a CO₂ mitigation process but a process that produces value-added chemicals reducing dependence on fossil fuels. This review assesses the sustainability of the CO₂ ECR process by focusing on life cycle assessment and techno-economic evaluation studies. Recent advances in catalysts and cell structures for CO₂ ECR are also discussed from a sustainability perspective. Furthermore, the integration of CO₂ ECR with renewable resources as a power source is highlighted. The review aims to determine the sustainability of CO₂ conversion for formic acid production and to provide guidelines for future advancements. Research gaps and challenges are also provided.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100308"},"PeriodicalIF":0.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biobased ionic liquid solutions for an efficient post-combustion CO2 capture system","authors":"Salvatore F. Cannone ,&nbsp;Michel Tawil ,&nbsp;Sergio Bocchini ,&nbsp;Massimo Santarelli","doi":"10.1016/j.ccst.2024.100312","DOIUrl":"10.1016/j.ccst.2024.100312","url":null,"abstract":"<div><div>This study explores the use of ionic liquids (ILs) as a novel and efficient alternative to conventional monoethanolamine (MEA) for CO₂ capture. While MEA scrubbing is well-known for carbon sequestration, it faces limitations such as high energy consumption, toxicity, and rapid degradation. In contrast, ILs offer advantages such as non-volatility, stability, and reduced corrosiveness. We focus on a biodegradable IL comprising choline ([Cho]) and proline ([Pro]) amino acids to create an eco-friendly solution. Dimethyl sulfoxide (DMSO) is introduced as a diluent to mitigate viscosity issues during CO₂ uptake. Our research measures the thermo-physical properties, including density and viscosity of [Cho][Pro] in DMSO at different concentrations. The addition of DMSO resulted in a viscosity reduction of &gt;97 % at a temperature of 303 K for the three virgin solutions compared to the pure IL. In addition, the CO₂ capture performance was evaluated using a system of absorption and desorption reactors. The results show that the 25 % wt [Cho][Pro] solution excels, achieving over 90 % CO₂ absorption, 0.66 <span><math><mrow><mi>m</mi><mi>o</mi><msub><mi>l</mi><mrow><mi>C</mi><msub><mi>O</mi><mn>2</mn></msub></mrow></msub><mo>/</mo><mi>m</mi><mi>o</mi><msub><mi>l</mi><mrow><mi>I</mi><mi>L</mi></mrow></msub></mrow></math></span> in the first cycle, and demonstrating high reusability and regeneration efficiency over multiple cycles. Comparisons indicate that the IL solution outperforms traditional aqueous MEA solutions. Longer term testing confirms the solution's stability and minimal degradation, achieving a regeneration efficiency of &gt;55 % over 30 cycles, suggesting the potential of [Cho][Pro] for sustainable long-term CO₂ capture applications.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100312"},"PeriodicalIF":0.0,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"System design of a novel open-air brayton cycle integrating direct air capture","authors":"Seongmin Son","doi":"10.1016/j.ccst.2024.100311","DOIUrl":"10.1016/j.ccst.2024.100311","url":null,"abstract":"<div><div>The Direct Air Capture (DAC) technology is essential for achieving carbon neutrality, as it enables processes with net-negative CO₂ emissions. However, its widespread commercialization faces significant challenges due to high energy requirements. Numerous attempts have been made to address this issue through thermal integration, yet the fundamental challenge of the high cost associated with extracting large volumes of low-concentration CO₂ from ambient air remains unresolved. In this study, the integration of Open-Air Brayton Cycle (OABC) as a solution to enhance overall system utilization by simultaneously utilizing large volumes of ambient air is introduced. Various OABC coupled temperature swing adsorption based DAC system layouts are analyzed while considering different regeneration temperatures, and the results revealed the optimal configurations that significantly reduce energy cost per captured unit of CO₂ with high purity and recovery. By combining an equilibrium short-cut model for temperature swing adsorption with process simulation methodologies, this research proposes the concept of “energy cost”—a metric that represents the amount of CO₂ captured against the energy penalty incurred by integrating DAC with OABC systems. The findings demonstrate that combining DAC and OABC systems could yield high purity and recovery rates of CO₂ through strategic thermal management and advanced adsorbent usage, offering a synergistic approach to carbon capture from an energy consumption perspective.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100311"},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrothermal-calcination synthesis of lithium orthosilicate microspheres for high-temperature CO2 capture","authors":"Xicheng Wang ,&nbsp;Wentao Xia ,&nbsp;Xianda Sun ,&nbsp;Yuandong Yang ,&nbsp;Xiaohan Ren ,&nbsp;Yingjie Li","doi":"10.1016/j.ccst.2024.100303","DOIUrl":"10.1016/j.ccst.2024.100303","url":null,"abstract":"<div><div>In recent years, the Li₄SiO₄ adsorbent has become a promising candidate for high-temperature CO₂ capture. The fabrication of micro-structured Li₄SiO₄ could enhance the capture performance effectively. However, there exists a conflict between the purity and the morphology of prepared micro-structured Li₄SiO₄. This study proposed a novel hydrothermal-calcination method, which could produce Li₄SiO₄ microspheres with great morphology and relatively high purity. The physicochemical properties, CO₂ capture performance and forming mechanisms of Li₄SiO₄ microspheres are evaluated and investigated systematically. It is found that the hydrothermal process could fabricate micro-spherical LiOH@Li₂SiO₃ precursor, which was further converted to Li₄SiO₄ microspheres during the subsequent calcination process. The LiOH@Li₂SiO₃ precursor could not only maintain the microstructure but also reduce the Li₄SiO₄ generation temperature, thus improving the morphology as well as the purity of obtained Li₄SiO₄ microspheres. As a result, the adsorbents could reach a CO₂ capture capacity of 0.167–0.222 g/g within 30 min's adsorption under 15 vol.% CO₂, and their cyclic stability are diverse depending on the used calcination temperatures. The hydrothermal-calcination contributes to the future preparation of high-performance Li₄SiO₄-based CO₂ adsorbents.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100303"},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eliminating insoluble products and enhancing reversible CO2 capture of a tetraethylenepentamine-based non-aqueous absorbent: Exploring the synergistic regulation of 2-amino-2-methyl-1-propanol and n-propanol","authors":"Xiaobin Zhou ,&nbsp;Yunqiong Tang ,&nbsp;Chao Liu ,&nbsp;Shengpeng Mo ,&nbsp;Yinming Fan ,&nbsp;Dunqiu Wang ,&nbsp;Bihong Lv ,&nbsp;Yanan Zhang ,&nbsp;Yinian Zhu ,&nbsp;Zongqiang Zhu ,&nbsp;Guohua Jing","doi":"10.1016/j.ccst.2024.100310","DOIUrl":"10.1016/j.ccst.2024.100310","url":null,"abstract":"<div><div>To tackle the prevalent challenges encountered with polyamine-based non-aqueous absorbents (NAAs), particularly the formation of viscous products and inferior regeneration performance, this study proposed an innovative synergistic regulation strategy that integrated 2-amino-2-methyl-1-propanol (AMP) and n-propanol (NPA). Accordingly, a novel tertiary tetraethylenepentamine (TEPA)-AMP-NPA (T-A-N) NAA was devised. The optimized T-A-N maintained complete homogeneity throughout the entire CO₂ absorption process and achieved an impressive CO₂ loading of 1.15 mol·mol⁻¹ while maintaining a low viscosity of merely 22.47 mPa·s. Remarkably, its absorption capacity showed little decrement after four consecutive absorption-desorption cycles, underscoring its exceptional recyclability. Within the T-A-N system, AMP underwent a reaction with CO₂, yielding AMP-carbamate and protonated AMP, while TEPA engaged in CO₂ absorption to form zwitterionic carbamates. During the desorption process, NPA served as a regeneration activator, facilitating the conversion of stable TEPA-carbamates into less stable alkyl carbonate intermediates, thereby enhancing the T-A-N's regeneration performance. Moreover, the T-A-N system addressed the issue of TEPA-carbamate self-aggregation into insoluble gelatinous substances by leveraging the synergistic enhancement effects between AMP derivatives and NPA. Specifically, these components effectively bound TEPA-carbamate species via robust electrostatic affinity and intermolecular hydrogen-bond interactions, inhibiting their self-aggregation and preventing the formation of insoluble products. Furthermore, T-A-N exhibited a significant reduction in both sensible and latent heat requirements, by 67 % and 82 % respectively, compared to 30 wt% MEA, highlighting its advantageous energy-saving potential for CO₂ capture. Overall, harnessing the synergistic enhancement effects of AMP and NPA was conducive to the development of polyamine-based NAAs that offered superior CO₂ capture reversibility, low energy consumption, and resistance to insoluble product formation.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100310"},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbon capture and sequestration with in-situ CO2 and steam integrated 3D concrete printing","authors":"Sean Gip Lim ,&nbsp;Yi Wei Daniel Tay ,&nbsp;Suvash Chandra Paul ,&nbsp;Junghyun Lee ,&nbsp;Issam T. Amr ,&nbsp;Bandar A. Fadhel ,&nbsp;Aqil Jamal ,&nbsp;Ahmad O. Al-Khowaiter ,&nbsp;Ming Jen Tan","doi":"10.1016/j.ccst.2024.100306","DOIUrl":"10.1016/j.ccst.2024.100306","url":null,"abstract":"<div><div>Profound reliance of the building and construction sector on cement exacerbates its immense carbon footprint, accounting for a substantial portion of worldwide emissions. In this paper, we investigate the possibilities of in-situ carbon capture and sequestration to eliminate spatial constraints from a chamber confined curing solution via CO₂ and steam integrated 3D concrete printing. The presented technology involves a two-step extrusion-based system that sequesters captured CO₂ directly into concrete prior deposition at the nozzle printhead, so as to achieve artificially accelerated carbonation reactions with enhancement of mechanical properties. Accordingly, samples subjected to in-situ CO₂ and steam integration showed increases of up to 50.0 % 3D printability, 36.8 % compressive strength, and 45.3 % flexural strength compared to control at its respective curing conditions. The results of said approach demonstrated 38.2 % increase in bulk carbon uptake compared to accelerated carbonation confined curing methods, offering an alternative pathway towards decarbonized construction with 3DCP.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100306"},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}