Carbon Capture Science & Technology最新文献

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A self-consistent design method of the autothermal dual circulating fluidized bed reactor for in-situ gasification chemical looping combustion of coal 用于煤炭就地气化化学循环燃烧的自热双循环流化床反应器的自洽设计方法
Carbon Capture Science & Technology Pub Date : 2024-09-26 DOI: 10.1016/j.ccst.2024.100292
Xi Chen, Haibo Zhao
{"title":"A self-consistent design method of the autothermal dual circulating fluidized bed reactor for in-situ gasification chemical looping combustion of coal","authors":"Xi Chen,&nbsp;Haibo Zhao","doi":"10.1016/j.ccst.2024.100292","DOIUrl":"10.1016/j.ccst.2024.100292","url":null,"abstract":"<div><div>This paper establishes a design method for the autothermal dual circulating fluidized bed reactor (DCFBR) of the coal-fueled <em>in-situ</em> gasification chemical looping combustion (<em>i</em>G-CLC) process. This method, grounded in a self-consistent phenomenological model, comprehensively elucidates the factors of mass and energy conservation, fuel and oxygen carrier (OC) reaction processes, and fluidization characteristics within the reactor. It is particularly suitable for the rapid screening of numerous potential designs, obtaining detailed design parameters, and studying their interrelationships. Utilizing this method, the regulation patterns of dual-bed interactive transport-reaction phenomena within a 5 MW<sub>th</sub> <em>i</em>G-CLC DCFBR are studied. Firstly, the effects of key design parameters on the OC circulation rate and bed inventory are analyzed. Following this, the impacts of circulation rate on the interactive heat and mass transfer between two beds are examined, delineating a reasonable range for the control of autothermal CLC process (circulation rate of 50–90 kg/m<sup>2</sup>s, temperature difference of 30–90 °C, OC conversion of 0.2–0.35, and oxygen-fuel ratio of 3–6). Subsequently, this paper investigates the influences of main design parameters on the performance metrics, such as gas/solid fuel conversion, operational costs, and operational benefits. It is found that the carbon stripper significantly enhances the carbon capture efficiency of the device, provided that its separation efficiency is maintained above 70–95 %. Sensitivity analysis is employed to study the response patterns of performance metrics to changes in input parameters. Ultimately, based on these analyses, a design scheme for the 5 MW<sub>th</sub> reactor is determined, with a detailed examination of the pressure balance state of the reactor under the design conditions, and the balanced material and energy flows at the reactor inlets and outlets.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100292"},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326850","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}
引用次数: 0
Enabling simultaneous CO2 and water vapor removal by MOF-801/Pebax mixed matrix membranes: Molecular simulation and experimental study 利用 MOF-801/Pebax 混合基质膜同时去除二氧化碳和水蒸气:分子模拟和实验研究
Carbon Capture Science & Technology Pub Date : 2024-09-26 DOI: 10.1016/j.ccst.2024.100307
Mahdi Ahmadi , Saravanan Janakiram , Sadiye Velioğlu , Arne Lindbråthen , Brian Arthur Grimes , Magne Hillestad , Liyuan Deng
{"title":"Enabling simultaneous CO2 and water vapor removal by MOF-801/Pebax mixed matrix membranes: Molecular simulation and experimental study","authors":"Mahdi Ahmadi ,&nbsp;Saravanan Janakiram ,&nbsp;Sadiye Velioğlu ,&nbsp;Arne Lindbråthen ,&nbsp;Brian Arthur Grimes ,&nbsp;Magne Hillestad ,&nbsp;Liyuan Deng","doi":"10.1016/j.ccst.2024.100307","DOIUrl":"10.1016/j.ccst.2024.100307","url":null,"abstract":"<div><div>Dehydration and CO<sub>2</sub> removal are two important gas separation processes. An efficient membrane enabling simultaneous reduction of water vapor and CO<sub>2</sub> levels from humid gas streams, such as natural gas and power plant flue gas, may advance these processes. In this study, a water-harvesting metal-organic framework, MOF-801, was synthesized with an average particle size of 120 nm, which was then dispersed in a Pebax matrix to fabricate mixed matrix membranes (MMMs). The potential of the MOF-801 as a filler in MMMs was evaluated for water and CO<sub>2</sub> separation from CO<sub>2</sub>/N<sub>2</sub> and CO<sub>2</sub>/CH<sub>4</sub> mixed gas streams. Compared with the neat Pebax membrane, 70% enhancement in the water permeability was achieved for an MMM of 20 wt.% MOF loading at 10 bar with a humid feed composition of CO<sub>2</sub>/CH<sub>4</sub>. A considerable CO<sub>2</sub>/N<sub>2</sub> separation factor (108) and CO<sub>2</sub> permeability (270 Barrer) were also obtained, exceeding the Robeson upper bound at both dry and humid states. A molecular simulation study was performed to reveal the adsorption sites in the MOF lattice and favorable interactions with gases. Interestingly, competition between gas components close to the Zr atom was observed, which is the favorable site for both CO<sub>2</sub> and water. Competitive adsorption was found to be the dominating transport mechanism for the selective transport of CO<sub>2</sub> and H<sub>2</sub>O in MOF-801, revealing the role of MOF-801 in MMMs for CO<sub>2</sub> and water vapor separation under both humid and dry conditions.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100307"},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326855","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}
引用次数: 0
Prediction of CO2 adsorption of biochar under KOH activation via machine learning 通过机器学习预测生物炭在 KOH 活化条件下的二氧化碳吸附量
Carbon Capture Science & Technology Pub Date : 2024-09-26 DOI: 10.1016/j.ccst.2024.100309
Junjie Zhang , Xiong Zhang , Xiaoqiang Li , Zhantao Song , Jingai Shao , Shihong Zhang , Haiping Yang , Hanping Chen
{"title":"Prediction of CO2 adsorption of biochar under KOH activation via machine learning","authors":"Junjie Zhang ,&nbsp;Xiong Zhang ,&nbsp;Xiaoqiang Li ,&nbsp;Zhantao Song ,&nbsp;Jingai Shao ,&nbsp;Shihong Zhang ,&nbsp;Haiping Yang ,&nbsp;Hanping Chen","doi":"10.1016/j.ccst.2024.100309","DOIUrl":"10.1016/j.ccst.2024.100309","url":null,"abstract":"<div><div>To effectively increase the CO<sub>2</sub> adsorption capacity of biochar, the activation process is often an indispensable link. However, the introduction of an activation process poses challenges in clarifying the relationship between the characterization parameters of biochar, adsorption parameters, and CO<sub>2</sub> adsorption capacity. Herein, a comprehensive dataset encompassing the CO<sub>2</sub> adsorption data of KOH-activated biochar using a “two-sep method” was compiled. Subsequently, ridge regression, multi-layer perceptron, and random forest models were employed to predict its CO<sub>2</sub> adsorption performance. To comprehensively explore the effects of activation conditions, physicochemical properties and adsorption parameters on CO<sub>2</sub> adsorption capacities, partial dependence via Shapley additive explanation (SHAP) values analysis was conducted. The results demonstrate that the multilayer perceptron model exhibits the highest prediction accuracy with a test R<sup>2</sup> value of 0.961. Additionally, it was found that the CO<sub>2</sub> adsorption capacity of activated biochar is primarily determined by micropores and nitrogen-containing groups rather than total pore volume at low adsorption pressure (&lt; 0.3 bar). Moreover, it increases significantly with decreasing average pore size, increasing pore volume, and increasing nitrogen content at low adsorption temperatures (&lt; 20 °C). When the ratio of KOH to biochar is in the range of 1–2 and the activation temperature is ∼ 700 °C, activated biochar with high CO<sub>2</sub> adsorption performance can be obtained. This study may provide valuable insights for the application of activated biochar in CO<sub>2</sub> adsorption.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100309"},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326857","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}
引用次数: 0
Efficient methane production from photocatalytic CO2 reduction by InCu0.05Co0.05Ox: The synergistic effect of Co and Cu InCu0.05Co0.05Ox 光催化还原二氧化碳产生高效甲烷:钴和铜的协同效应
Carbon Capture Science & Technology Pub Date : 2024-09-26 DOI: 10.1016/j.ccst.2024.100313
Shuhao Li , Feng Wang , Tianhan Shen , Derrick Ng , Yuning Huo , Boxiong Shen , Zongli Xie
{"title":"Efficient methane production from photocatalytic CO2 reduction by InCu0.05Co0.05Ox: The synergistic effect of Co and Cu","authors":"Shuhao Li ,&nbsp;Feng Wang ,&nbsp;Tianhan Shen ,&nbsp;Derrick Ng ,&nbsp;Yuning Huo ,&nbsp;Boxiong Shen ,&nbsp;Zongli Xie","doi":"10.1016/j.ccst.2024.100313","DOIUrl":"10.1016/j.ccst.2024.100313","url":null,"abstract":"<div><div>Photocatalytic reduction of CO<sub>2</sub> to methane (CH<sub>4</sub>) is a promising strategy to address CO<sub>2</sub> emissions and energy scarcity. However, low efficiency limits its practical application. This study presents a bimetallic co-doping strategy using Cu and Co to enhance the photocatalytic performance of the In<sub>2</sub>O<sub>3</sub> catalyst. The InCu<sub>0.05</sub>Co<sub>0.05</sub>O<sub>x</sub> (InCuCo) catalyst demonstrated a CH<sub>4</sub> yield of 22.3 µmol·g<sup>−1</sup>·h<sup>−1</sup>, outperforming In<sub>2</sub>O<sub>3</sub> (8.8 µmol·g<sup>−1</sup>·h<sup>−1</sup>), InCu (14.5 µmol·g<sup>-1</sup>·h<sup>−1</sup>), and InCo (18.0 µmol·g<sup>-1</sup>·h<sup>−1</sup>). This remarkable improvement highlights the synergistic effects of Cu and Co in the In<sub>2</sub>O<sub>3</sub> catalyst. Characterizations and density functional theory (DFT) calculations revealed that Co doping narrows the bandgap of the catalyst, enhancing light utilization, while Cu adjusts the energy band positions and improves CO<sub>2</sub> adsorption. Consequently, the InCuCo catalyst significantly enhances the photocatalytic reduction of CO<sub>2</sub>–CH<sub>4</sub>, offering remarkable activity and stability. These results provide new insights into CO<sub>2</sub> photoreduction to CH<sub>4</sub>, facilitating further practical applications.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100313"},"PeriodicalIF":0.0,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326854","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}
引用次数: 0
Hypercrosslinked natural biopolymers with quasi-unimodal micropores for carbon capture 用于碳捕获的具有准单模微孔的超交联天然生物聚合物
Carbon Capture Science & Technology Pub Date : 2024-09-20 DOI: 10.1016/j.ccst.2024.100305
Liang Ding , Yue Wu , Guanchu Lu , Yixuan Zhang , Mariolino Carta , Xianfeng Fan , Cher Hon Lau
{"title":"Hypercrosslinked natural biopolymers with quasi-unimodal micropores for carbon capture","authors":"Liang Ding ,&nbsp;Yue Wu ,&nbsp;Guanchu Lu ,&nbsp;Yixuan Zhang ,&nbsp;Mariolino Carta ,&nbsp;Xianfeng Fan ,&nbsp;Cher Hon Lau","doi":"10.1016/j.ccst.2024.100305","DOIUrl":"10.1016/j.ccst.2024.100305","url":null,"abstract":"<div><p>Ultra-microporous solid sorbents with high CO<sub>2</sub> adsorption capacities and gas selectivity are preferred for carbon capture. Here we deliver such sorbents <em>via</em> a combination of narrow micropores, lack of mesopores and an abundance of CO<sub>2</sub>-philic functional groups. This was achieved by crosslinking lignin waste obtained from a local paper factory, in Lewis's acid deep eutectic solvents (DESs) such as [ChCl][ZnCl<sub>2</sub>]<sub>2</sub> and [ChCl][FeCl<sub>3</sub>]<sub>2</sub>, varying crosslinker types and optimizing experimental parameters. Hypercrosslinked polymers (HCPs) prepared in [ChCl][FeCl<sub>3</sub>]<sub>2</sub> with 1,4-dichloroxylene crosslinkers comprised quasi-unimodal, ultra-narrow micropores. At 298 K, 1 bar, and using a gas mixture comprising 15 vol.% CO<sub>2</sub> and 85 vol.% N<sub>2</sub> (similar to post-combustion flue gas), the CO<sub>2</sub> adsorption capacity and CO<sub>2</sub>/N<sub>2</sub> selectivity of this HCP reached 18.1 cm<sup>3</sup> <em>g</em><sup>−1</sup> and 835, respectively. Deployed in temperature swing adsorption and evaluated for vacuum pressure swing adsorption, the CO<sub>2</sub> recovery rates of this HCP were &gt;87 %, outperforming commercial solid sorbents such as zeolite 13X and PSAO2 HP Molsiv™. The optimization of sorbent microporosity with CO<sub>2</sub>-philic functional groups could pave the route towards developing bio-derived solid sorbents for carbon capture.</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100305"},"PeriodicalIF":0.0,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772656824001179/pdfft?md5=95da19847e8c68cb25c45e0e7608c18c&pid=1-s2.0-S2772656824001179-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142270463","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}
引用次数: 0
Post-combustion CO2 capture retrofit from diesel-powered Arctic mines – Techno-economic and environmental assessment 以柴油为动力的北极矿山燃烧后二氧化碳捕集改造--技术经济和环境评估
Carbon Capture Science & Technology Pub Date : 2024-09-19 DOI: 10.1016/j.ccst.2024.100299
M.O. Landry , F. Larachi , P. González
{"title":"Post-combustion CO2 capture retrofit from diesel-powered Arctic mines – Techno-economic and environmental assessment","authors":"M.O. Landry ,&nbsp;F. Larachi ,&nbsp;P. González","doi":"10.1016/j.ccst.2024.100299","DOIUrl":"10.1016/j.ccst.2024.100299","url":null,"abstract":"<div><p>This study evaluates the economic feasibility and environmental impacts of retrofitting a diesel-based powerhouse in the Canadian Arctic with a post-combustion carbon capture process at an active gold mining site isolated from cheaper or cleaner electrical grids. A techno-economic analysis was conducted to determine the total annualized cost (<em>TAC</em>) of implementing a monoethanolamine (MEA) chemical absorption process to mitigate carbon dioxide emissions. The calculated cost per tonne of CO<sub>2</sub> captured of $420 reflects the challenges of operating northern sites reliant on diesel fuel. Electricity generation costs, estimated at 0.44 $/kWh, are found to explain most of the variance in cost per tonne compared to other studies. A profitability model, comparing the additional annual expenditure to the current carbon tax exposure (<em>CTE</em>), suggests that carbon pricing alone is insufficient to incentivize investment in energy-intensive carbon capture technologies such as amine-based absorption processes. The sensitivity analysis, which evaluates profitability relative to variations in key variables, highlights the significant impact of the solvent regeneration heat demand. This major cost driver also contributes substantially to the carbon footprint of 0.55 tonnes emitted per tonne captured, as determined by a complementary life cycle assessment.</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100299"},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772656824001118/pdfft?md5=520526a50ec1cb86981e4ccf886913a6&pid=1-s2.0-S2772656824001118-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142270462","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}
引用次数: 0
Carbon sequestration behavior of magnesium oxychloride cement based on salt lakes magnesium residue and industrial solid waste 基于盐湖镁渣和工业固体废弃物的氧氯化镁水泥的固碳行为
Carbon Capture Science & Technology Pub Date : 2024-09-19 DOI: 10.1016/j.ccst.2024.100301
Yuanrui Li , Baolan Li , Weixin Zheng , Jin Zhou , Jing Wen , Jinmei Dong , Chenggong Chang , Qiang Wang
{"title":"Carbon sequestration behavior of magnesium oxychloride cement based on salt lakes magnesium residue and industrial solid waste","authors":"Yuanrui Li ,&nbsp;Baolan Li ,&nbsp;Weixin Zheng ,&nbsp;Jin Zhou ,&nbsp;Jing Wen ,&nbsp;Jinmei Dong ,&nbsp;Chenggong Chang ,&nbsp;Qiang Wang","doi":"10.1016/j.ccst.2024.100301","DOIUrl":"10.1016/j.ccst.2024.100301","url":null,"abstract":"<div><p>With the extensive utilization of lithium-ion battery in the electric vehicle and energy storage field, the consumption of lithium has been sharply increasing. Lithium resource occurrence area were facing increasing environmental pressure, particularly the magnesium residue (MR) produced in the lithium extraction process, and a sustainable exploitation pathway have not been established. In the framework of \"net-zero\", MRs were onverted to Salt lake magnesium oxide (SL-MgO) which was characterized by various elemental and surface analysis methods. Magnesium oxychloride cement (MOC) was prepared form SL-MgO and two industrial solid wastes [fly ash (FA) and phosphogypsum (PG)], and its carbon sequestration capacity was analyzed and evaluated. If all the MRs produced from the lithium extraction process were used to manufacture MOC materials for CO<sub>2</sub> sequestration. When the PG content was 20 %, the CO<sub>2</sub> sequestration capacity of the MOC was 0.29 kg/m<sup>2</sup>, the compressive strength was 85.30 MPa, and the MOC neutralized 220.10 % of the CO<sub>2</sub> emissions from the lithium extraction process. In this procedure, evidence was found of the typical metastable carbonate products identifiable. Overall, utilizing MRs and industrial solid waste to manufacture new low-carbon MOCs may become the most direct and effective countermeasures to alleviate environmental pressure in these regions.</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100301"},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772656824001131/pdfft?md5=7145c5a848f626375d22a4d324a97d9a&pid=1-s2.0-S2772656824001131-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142270468","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}
引用次数: 0
CO2 capture via subsurface mineralization geological settings and engineering perspectives towards long-term storage and decarbonization in the Middle East 通过地下成矿捕获二氧化碳 实现中东长期封存和脱碳的地质环境和工程前景
Carbon Capture Science & Technology Pub Date : 2024-09-16 DOI: 10.1016/j.ccst.2024.100293
Priyanka Kumari , Rihab Yahmadi , Fatima Mumtaz , Lourdes F. Vega , Andrea Ceriani , Riccardo Tribuzio , Ludovic F. Dumée , Alessandro Decarlis
{"title":"CO2 capture via subsurface mineralization geological settings and engineering perspectives towards long-term storage and decarbonization in the Middle East","authors":"Priyanka Kumari ,&nbsp;Rihab Yahmadi ,&nbsp;Fatima Mumtaz ,&nbsp;Lourdes F. Vega ,&nbsp;Andrea Ceriani ,&nbsp;Riccardo Tribuzio ,&nbsp;Ludovic F. Dumée ,&nbsp;Alessandro Decarlis","doi":"10.1016/j.ccst.2024.100293","DOIUrl":"10.1016/j.ccst.2024.100293","url":null,"abstract":"<div><p>Mineral carbonation or mineralization of CO<sub>2</sub> using rocks or waste industrial materials is emerging as a viable carbon capture and storage (CCS) technology, especially for smaller and medium-scale emitters where geological sequestration is not feasible. During mineralization processes, CO<sub>2</sub> chemically reacts with alkaline earth metals in waste materials or rocks to form stable and non-toxic carbonates <em>In situ</em> mineral carbonation holds promise due to ample resources and enhanced security. However, it is still in its early stages, with higher transport and storage costs compared to geological storage in sedimentary basins. <em>Ex situ</em> mineral carbonation has shown promise at pilot and demonstration scales, but its widespread application is hindered by high costs, ranging from US$50-US$300/ton of sequestered CO<sub>2</sub>. This review delves into the current progress of proposed mineralization technologies and their potential in reducing the overall cost of CO<sub>2</sub> sequestration. The discussion critically analyzes various factors affecting carbonation reactions, such as temperature, pressure, leaching agents, solid-to-liquid ratio, and mineralogy for geological settings relevant to the Middle East and the net-zero strategy established within Gulf Cooperation Countries (GCC). Furthermore, the potential commercialization of mineral carbonation, emphasizing the importance of reducing energy consumption and production costs to make the process economically viable is highlighted, offering directions for circular economy and mineral carbonation as a substantial carbon mitigation tool in the Middle East region. Life Cycle Assessment and Techno-Economic Analysis) was also reviewed to provide a comprehensive understanding of both the environmental and economic implications of a CO<sub>2</sub> capture via subsurface mineralization</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100293"},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772656824001052/pdfft?md5=8903ecec69272ce814add40e706429d8&pid=1-s2.0-S2772656824001052-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142243321","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}
引用次数: 0
In-situ hydrogenation of dual function material for integrated CO2 capture and methanation with the presence of steam 在有蒸汽存在的情况下,对集成二氧化碳捕获和甲烷化的双功能材料进行原位氢化
Carbon Capture Science & Technology Pub Date : 2024-09-08 DOI: 10.1016/j.ccst.2024.100291
Daocheng Liu, Liangyong Chen
{"title":"In-situ hydrogenation of dual function material for integrated CO2 capture and methanation with the presence of steam","authors":"Daocheng Liu,&nbsp;Liangyong Chen","doi":"10.1016/j.ccst.2024.100291","DOIUrl":"10.1016/j.ccst.2024.100291","url":null,"abstract":"<div><p>The impacts of steam on hydrogenation of dual function materials (DFM) for Integrated CO<sub>2</sub> Capture and <em>in-situ</em> methanation (ICCM) is a new area requiring detailed investigations prior to industrialization. This work investigated impacts from steams on hydrogenation of Ru-Na<sub>2</sub>CO<sub>3</sub>/γ-Al<sub>2</sub>O<sub>3</sub> DFM for ICCM that containing Na<sub>2</sub>O adsorbent, Ru sites, and γ-Al<sub>2</sub>O<sub>3</sub> support. DFM performance was examined in cyclic reactions as introducing external steam during hydrogenation, and the behaviors of adsorbed CO<sub>2</sub> species during hydrogenation were characterized by <em>in-situ</em> DRIFTS and H<sub>2</sub>-TPSR. CH₄ selectivity decreased sharply from 84.3 % to 1.2 % as increasing external steam concentrations to 20 vol.%, and the conversion of adsorbent component decreased from 298.5 μmol g<sup>-1</sup> to 167.1 μmol g<sup>-1</sup>. <em>b</em>-CO<sub>3</sub><sup>2-</sup> and <em>m</em>-CO<sub>3</sub><sup>2-</sup> formed at Na<sub>2</sub>CO<sub>3</sub>/γ-Al<sub>2</sub>O<sub>3</sub> interface were the carbonate species that could be hydrogenated into CH<sub>4</sub>, some of which were desorbed into CO<sub>2</sub> due to moisture-driven desorption effects. With the presence of external steam in H<sub>2</sub> reactants, the conversion of carbonate species is a competing process between hydrogenation and moisture-driven desorption. In ICCM reaction with external steam present, <em>b</em>-CO<sub>3</sub><sup>2-</sup> was preferred to be desorbed into CO<sub>2</sub>; while for <em>m</em>-CO<sub>3</sub><sup>2-</sup>, desorption into CO<sub>2</sub> by steam and hydrogenation into CH<sub>4</sub> proceeded in parallel. Strong moisture-driven desorption effects from steam product were demonstrated in a fixed-bed reactor, which also led to rapid decrease of localized selectivity of CH<sub>4</sub> along bed height.</p></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100291"},"PeriodicalIF":0.0,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772656824001039/pdfft?md5=40bbc551bf4434d0f251bd58b0bc43ce&pid=1-s2.0-S2772656824001039-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142158388","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}
引用次数: 0
Advancements in dual-phase carbonate membranes for carbon capture and syngas production 用于碳捕获和合成气生产的双相碳酸酯膜的研究进展
Carbon Capture Science & Technology Pub Date : 2024-09-03 DOI: 10.1016/j.ccst.2024.100288
Liza Melia Terry , Melvin Xin Jie Wee , Claudia Li , Guoqiang Song , Jiuan Jing Chew , Jian Song , M. Hanif B.M. Halim , Farahdila B. Kadirkhan , Shaomin Liu , Sibudjing Kawi , Jaka Sunarso
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