Adsorption最新文献_第3页

Enhancing adsorption heat transformers with functionalized MOF-808: A statistical physics approach 用功能化MOF-808增强吸附式热变压器：统计物理方法

IF 3.3 4区工程技术

Adsorption Pub Date : 2026-07-01 DOI: 10.1007/s10450-026-00696-x

Wouroud Sghaier, Yosra Ben Torkia, Fatma Aouaini, Abdelmottaleb Ben Lamine

{"title":"Enhancing adsorption heat transformers with functionalized MOF-808: A statistical physics approach","authors":"Wouroud Sghaier, Yosra Ben Torkia, Fatma Aouaini, Abdelmottaleb Ben Lamine","doi":"10.1007/s10450-026-00696-x","DOIUrl":"10.1007/s10450-026-00696-x","url":null,"abstract":"<div>The recovery and upgrading of low-grade thermal energy has become an important challenge for improving industrial energy efficiency. Adsorption heat transformers (AdsHT) provide a viable solution by converting waste heat into higher-temperature heat streams exceeding 120 °C through reversible adsorption–desorption cycles. In this study, the thermodynamic performance of an AdsHT system was assessed using two post-synthetically modified MOF-808 materials, MOF-808NDS and MOF-808PDS, as adsorbents for water vapor. A statistical physics approach based on the grand canonical ensemble was applied to investigate the adsorption mechanism and to determine the key energetic and structural parameters governing the process. The modeling results reveal that water adsorption on both materials can be described by a monolayer model involving two distinct adsorption energy levels. Stereographic analysis suggests that water molecules interact with the adsorption sites mainly in a non-parallel orientation. The calculated adsorption energies, lower than 40 kJ mol⁻¹, indicate that the process is dominated by weak physical interactions such as hydrogen bonding and van der Waals forces. Furthermore, pore size distribution analysis confirms the microporous structure of the studied frameworks. The thermodynamic analysis of the adsorption cycle shows coefficients of performance (COPGCSP) of 0.764 for MOF-808NDS and 0.826 for MOF-808PDS, highlighting the superior efficiency of MOF-808PDS due to its higher water uptake and favorable pore characteristics. These findings demonstrate that functionalized MOF-808 materials are promising candidates for enhancing the performance of adsorption heat transformer systems dedicated to sustainable thermal energy utilization.</div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"32 6","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148349840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Selective CO2 capture from industrial emissions and biogas using MUF-16: a computational study on competitive adsorption from gas mixtures 使用MUF-16从工业排放和沼气中选择性捕获二氧化碳：气体混合物竞争吸附的计算研究

IF 3.1 4区工程技术

Adsorption Pub Date : 2026-06-04 DOI: 10.1007/s10450-026-00688-x

Elnaz Jangodaz, Shane G. Telfer

{"title":"Selective CO2 capture from industrial emissions and biogas using MUF-16: a computational study on competitive adsorption from gas mixtures","authors":"Elnaz Jangodaz, Shane G. Telfer","doi":"10.1007/s10450-026-00688-x","DOIUrl":"10.1007/s10450-026-00688-x","url":null,"abstract":"<div>MUF-16 (MUF = Massey University framework) is currently being commercialized for carbon dioxide capture from large-scale industrial emissions and for biogas upgrading. Although comprehensive experimental and pilot-trial data have already confirmed MUF-16’s structural stability towards impurity gases, such as NOx, H2S, and CO, quantitative thermodynamic data regarding the uptake of these components have not yet been reported. Experimental limitations associated with toxic and corrosive gases make laboratory measurements difficult and underscore the importance of developing reliable simulation techniques to predict their influence on CO2 capture by MUF-16. Here, we employed the RASPA simulation package to predict the adsorption isotherms of such gases. The results demonstrate that MUF-16 maintains its strong affinity for CO2 in the presence when these gases are present in the gas stream. These results strengthen the commercial potential of MUF-16 for carbon capture across a diverse range of industrial scenarios.</div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"32 5","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10450-026-00688-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148172675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adsorption calorimetry studies of carbon dioxide uptake within porous rocks from the Aphrodite gas field 阿芙罗狄蒂气田多孔岩石中二氧化碳吸收的吸附量热法研究

IF 3.1 4区工程技术

Adsorption Pub Date : 2026-06-03 DOI: 10.1007/s10450-026-00691-2

Eleni Himona, Sean P. Rigby

{"title":"Adsorption calorimetry studies of carbon dioxide uptake within porous rocks from the Aphrodite gas field","authors":"Eleni Himona, Sean P. Rigby","doi":"10.1007/s10450-026-00691-2","DOIUrl":"10.1007/s10450-026-00691-2","url":null,"abstract":"<div>Adsorption calorimetry has been used to provide a novel characterisation of the adsorption of carbon dioxide within clay-rich carbonate mudstones from the Aphrodite Mediterranean gas field, particularly considering the distribution of strength of adsorption sites, and their external accessibility via mass transfer measurements. The distribution of heat of adsorption (HoA) with coverage, determined for carbon dioxide via adsorption calorimetry, was found to have a subsidiary peak at intermediate coverage values for all rock types considered. A comparison of the carbon dioxide and nitrogen isotherms led to the proposed origin of the peaks lying with a particular surface disposition of adsorbate, and this mechanism was found to be predictive of the position of the peaks. Coupled kinetic gas uptake and calorimetry experiments revealed the relative external accessibility of sites with differing HoA. For some rocks the accessibility was similar for all adsorption sites, but for one rock type the accessibility was best for sites with the highest HoA. This difference was found to be associated with the particular pathways available to the various adsorption sites, as detected by serial nitrogen and iodononane experiments.</div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"32 5","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10450-026-00691-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148172624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tailoring nanoporous activated carbons from palm leaf biomass for high performance and selective CO2 capture 从棕榈叶生物质中裁剪纳米多孔活性炭，用于高性能和选择性二氧化碳捕获

IF 3.1 4区工程技术

Adsorption Pub Date : 2026-06-03 DOI: 10.1007/s10450-026-00695-y

Muhammad Amin, Mosim Ansari, Abuzar Khan, Muhammad Usman, Aasif Helal, M. Nasiruzzaman Shaikh, Saleh Mohammed AlMansour, Mohd Yusuf Khan

{"title":"Tailoring nanoporous activated carbons from palm leaf biomass for high performance and selective CO2 capture","authors":"Muhammad Amin, Mosim Ansari, Abuzar Khan, Muhammad Usman, Aasif Helal, M. Nasiruzzaman Shaikh, Saleh Mohammed AlMansour, Mohd Yusuf Khan","doi":"10.1007/s10450-026-00695-y","DOIUrl":"10.1007/s10450-026-00695-y","url":null,"abstract":"<div>The urgent need to mitigate anthropogenic CO2 emissions has driven the advancement of various carbon capture technologies, with solid adsorbents emerging as a key focus. Among them, activated carbons (ACs) are particularly attractive due to their excellent adsorption capacity, thermal stability, and cost-effectiveness, making them well-suited for industrial-scale applications. However, achieving high CO2 selectivity in biomass-derived ACs remains a significant challenge, requiring precise control over pore structure and surface functionality. In this study, nanoporous ACs were synthesized from palm leaves using phosphoric acid (H3PO4), potassium hydroxide (KOH), and sodium bicarbonate (NaHCO3) as activating agents, achieving optimized pore sizes (< 2 nm). Different Characterization techniques were employed to assess the properties of the prepared ACs. Morphological analysis results indicate that the AC-P-H3PO4 exhibits a honeycomb structure with abundant pores, enabling CO2 capture (up to 1.42 mmol/g) with a selectivity of up to 44.3, surpassing other reported ACs. Isosteric heat of adsorption (Qst values = 22–27 kJ/mol) measurements demonstrate that CO2 adsorption occurs primarily via physisorption, suggesting lower energy requirements for regeneration. Additionally, performance indicators for a cyclic vacuum swing adsorption (VSA) process were evaluated, highlighting the practical suitability of these nanoporous ACs for CO2 capture applications. ACs exhibited a CO2 working capacity of up to 0.97 mmol/g and regenerability of up to 81%.</div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"32 5","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148172156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Volatile fatty acid adsorption: From equilibrium characterization to breakthrough dynamics 挥发性脂肪酸吸附：从平衡表征到突破动力学

IF 3.1 4区工程技术

Adsorption Pub Date : 2026-05-29 DOI: 10.1007/s10450-026-00692-1

Cristiana Gomes, Ana M. Ribeiro, Alírio E. Rodrigues, Alexandre F.P. Ferreira

{"title":"Volatile fatty acid adsorption: From equilibrium characterization to breakthrough dynamics","authors":"Cristiana Gomes, Ana M. Ribeiro, Alírio E. Rodrigues, Alexandre F.P. Ferreira","doi":"10.1007/s10450-026-00692-1","DOIUrl":"10.1007/s10450-026-00692-1","url":null,"abstract":"<div>This work presents a comprehensive experimental and modelling study of the adsorption and desorption behavior of volatile fatty acids (VFA) under well-controlled conditions, with the aim of developing an integrated modelling framework with experimental data (adsorption equilibrium and dynamic behavior) for better predictions of process performance. Batch experiments using single-component solutions were first performed to determine adsorption equilibrium and to identify a suitable adsorbent for VFA separation. The nonfunctionalized adsorbent (Amberlite XAD-4) was selected and used in the fixed-bed experiments, to determine single- and multicomponent breakthrough curves. In a multicomponent system, adsorption capacities ranged from 0.125 mmol·gads−1 for acetic acid to 1.564 mmol·gads−1 for hexanoic acid, highlighting significant differences in affinity among VFA. During these assays, some swelling of the adsorbent was observed with increase adsorbed quantity in the solid phase. A mathematical model was developed combining the dual-site Langmuir model and the Linear Driving Force model to describe adsorption equilibrium and intraparticle diffusion, respectively. Adsorbent swelling was incorporated by defining the mass transfer coefficient dependent on the average adsorbed quantity in the solid phase, enabling the model to capture swelling-induced variations in transport properties. The proposed model successfully described VFA adsorption and desorption behavior with single- and multicomponent solutions, and in both batch and fixed-bed systems. This work provides a consistent experimental-modelling methodology for VFA adsorption and represents a first step toward the development of intensified separation processes such as simulated moving bed systems and the future application to real effluents.</div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"32 5","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10450-026-00692-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148173243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adsorption equilibria and kinetics of NO and N2O on natural erionite exchanged with Fe, Co, and Cu NO和N2O在与Fe、Co和Cu交换的天然铁铁矿上的吸附平衡和动力学

IF 3.1 4区工程技术

Adsorption Pub Date : 2026-05-29 DOI: 10.1007/s10450-026-00693-0

Mayra Sánchez-Cruz, Rosario Hernández-Huesca, M. Ana Pérez-Cruz, Eric Aguilar-García, Hernani. Yee-Madeira, Rosalía Torralba-Sánchez, Diana Vargas Hernández, D. Judith Caballero-Jiménez

{"title":"Adsorption equilibria and kinetics of NO and N2O on natural erionite exchanged with Fe, Co, and Cu","authors":"Mayra Sánchez-Cruz, Rosario Hernández-Huesca, M. Ana Pérez-Cruz, Eric Aguilar-García, Hernani. Yee-Madeira, Rosalía Torralba-Sánchez, Diana Vargas Hernández, D. Judith Caballero-Jiménez","doi":"10.1007/s10450-026-00693-0","DOIUrl":"10.1007/s10450-026-00693-0","url":null,"abstract":"<div>The present study investigated the equilibrium and kinetics of nitric oxide (NO) and nitrous oxide (N2O) adsorption at different temperatures on natural erionite from Agua Prieta, Sonora, Mexico (ZAPS), modified by ion exchange with Fe2+, Co2+, and Cu2+. UV–Vis diffuse reflectance, energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR), and Mössbauer spectroscopy were used to characterize the exchanged samples. The Freundlich, Langmuir, and Brunauer–Emmett–Teller (BET) models were employed to analyze the adsorption data. The isotherms of N2O and NO adsorption in the exchanged samples at the same temperature and at low equilibrium pressures showed that the adsorbed amount and irreversibility grade decrease in the order: ZAPS-Co > ZAPS-Fe > ZAPS-Cu, which was attributed to the increasing acidity of the cations. At high equilibrium pressures, the NO adsorption capacity changed in order due to the increased pore volume resulting from the exchange of smaller cations. At equilibrium, the ZAPS-Fe and ZAPS-Cu samples exhibited the best performance for separating NO/N2O mixtures at high temperatures and low concentrations, whereas for high concentrations, the ZAPS-Cu sample was the most effective for separation This result indicated that upon contact with the ZAPS-Cu catalyst, the NO/N2O mixture undergoes selective adsorption of NO, resulting in an increase in the relative concentration of N2O in the gas phase. Under non-equilibrium conditions at low temperatures, for the separation of N2O-NO mixtures, the N2O was adsorbed more rapidly than NO.</div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"32 5","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10450-026-00693-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148173620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Retraction Note: DFT study of the adsorption behaviors of glycine, hystidine and phenylalanine amino acids on the novel Ag4 cluster modified BSe nanosheets: applications to bionanosensors 论文摘要：新型Ag4簇修饰BSe纳米片对甘氨酸、胱氨酸和苯丙氨酸的吸附行为的DFT研究：在生物纳米传感器中的应用

IF 3.1 4区工程技术

Adsorption Pub Date : 2026-05-23 DOI: 10.1007/s10450-026-00694-z

Farag M. A. Altalbawy, Ali Fawzi Al-Hussainy, Suhas Ballal, Mekha Monsi, Chakshu Walia, G. V. Siva Prasad, Masar Almuttairi, Karar R. Al-Shami, Marwa Akram Nafea, Ahmed Mohsin Alsayah

引用次数: 0

Meteorology-driven screening of moisture swing sorbents for passive direct air capture 用于被动直接空气捕获的湿气波动吸附剂的气象驱动筛选

IF 3.1 4区工程技术

Adsorption Pub Date : 2026-05-22 DOI: 10.1007/s10450-026-00671-6

Mohammad Abu Talha, John Cirucci, Klaus S. Lackner

{"title":"Meteorology-driven screening of moisture swing sorbents for passive direct air capture","authors":"Mohammad Abu Talha, John Cirucci, Klaus S. Lackner","doi":"10.1007/s10450-026-00671-6","DOIUrl":"10.1007/s10450-026-00671-6","url":null,"abstract":"<div>Scaling passive direct air capture (DAC) with moisture swing sorbents requires an understanding of how ambient meteorological conditions constrain achievable performance. While laboratory and device-scale models of moisture swing adsorption exist, there is currently a lack of parsimonious frameworks that translate long-term weather variability into site-level productivity and water-loss metrics for screening and deployment decisions. In this study, we develop a reduced-order, meteorology-driven process model for a moisture swing passive DAC system that maps ambient temperature, relative humidity, and wind speed directly to CO2 productivity and net water loss. The model employs decoupled proxy equilibria, a modified Langmuir isotherm for CO2 loading and a Flory–Huggins model for H2O loading, closed with linear-driving-force kinetics parameterized by ambient wind speed and temperature. Using 17 years of NOAA weather data for St. Johns, Arizona, we quantify climatological seasonal variability and the impact of interannual weather fluctuations. Results show that relative humidity is the dominant driver of both CO2 productivity and water loss. Low-humidity conditions enable higher productivity at the cost of increased net water loss, whereas periods of sustained high ambient humidity can preclude capture entirely. Notably, we identify distinct wintertime intervals during which the equilibrium CO₂ loading under ambient conditions falls below the regenerated state, resulting in zero net capture despite continued cycling. This finding highlights a minimum required swing capacity and establishes a fundamental climatic constraint on passive DAC operability. By explicitly linking meteorology to CO2 productivity and water loss, this work provides a screening-level framework for geospatial site triage and operational planning of moisture-swing passive DAC systems, with results interpreted as bounded performance estimates rather than device-specific predictions.</div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"32 5","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148009552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mitigating elemental sulfur in dehydration unit using Na-LTA4A zeolite: Molecular simulation and process optimization Na-LTA4A沸石减轻脱水装置单质硫：分子模拟与工艺优化

IF 3.1 4区工程技术

Adsorption Pub Date : 2026-05-18 DOI: 10.1007/s10450-026-00682-3

Sara Abbasi, Mohammad Ahmadi, Mohammad Reza Khosravi-Nikou, Ahmad Shariati

{"title":"Mitigating elemental sulfur in dehydration unit using Na-LTA4A zeolite: Molecular simulation and process optimization","authors":"Sara Abbasi, Mohammad Ahmadi, Mohammad Reza Khosravi-Nikou, Ahmad Shariati","doi":"10.1007/s10450-026-00682-3","DOIUrl":"10.1007/s10450-026-00682-3","url":null,"abstract":"<div>Natural gas, an essential energy source, often contains undesirable acidic components such as hydrogen sulfide (H2S) and carbon dioxide (CO2), which must be removed to prevent corrosion, environmental pollution, and efficiency loss. During the dehydration of acid gases, the formation of carbonyl sulfide (COS) and elemental sulfur poses significant operational challenges, particularly in temperature swing adsorption (TSA) units using molecular sieves. Although COS is initially non-corrosive, it can hydrolyze to form H2S and CO2, exacerbating corrosion and reducing process reliability. In this study, molecular simulations using the RASPA (Version 2) code were employed to investigate the adsorption behavior of H2O, H2S, and CO2, and to explore the reaction pathways leading to COS and elemental sulfur formation in Na-LTA4A zeolite. The Langmuir–Freundlich model was applied to describe the adsorption isotherms, while the Aspen Adsorption (Version 12.1) software was used to simulate the TSA process under various operational conditions. Simulation results reveal that Na-LTA4A enhances H2S conversion to COS up to 81% at 523 K, and COS decomposition to elemental sulfur occurs effectively above 450 K. The effects of regeneration gas temperature, flow rate, H2S concentration, and gas type were systematically analyzed. Among these, the composition of the regeneration gas was found to be the most effective parameter in controlling sulfur formation. Substituting dry acid gas with pure CO2, CH4, or N2 significantly reduces elemental sulfur production. This combined molecular–process modeling approach provides a cost-effective and safe alternative to experimental studies, offering molecular-level insight and practical guidelines for optimizing dehydration processes to minimize sulfur formation and improve unit performance.</div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"32 5","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148008683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Equilibrium and kinetic studies of unary CO2 and H2O adsorption on Lewatit VP OC 1065 for direct air capture of CO2 lewait VP OC 1065吸附一元CO2和H2O的平衡及动力学研究

IF 3.1 4区工程技术

Adsorption Pub Date : 2026-04-30 DOI: 10.1007/s10450-026-00690-3

Bhubesh Murugappan Balasubramaniam, Evelyn Forbes, Colin Picard, James A. Sawada, Arvind Rajendran

{"title":"Equilibrium and kinetic studies of unary CO2 and H2O adsorption on Lewatit VP OC 1065 for direct air capture of CO2","authors":"Bhubesh Murugappan Balasubramaniam, Evelyn Forbes, Colin Picard, James A. Sawada, Arvind Rajendran","doi":"10.1007/s10450-026-00690-3","DOIUrl":"10.1007/s10450-026-00690-3","url":null,"abstract":"<div>The study focuses on the characterization of Lewatit VP OC 1065, a reference sorbent for direct air capture of ({hbox {CO}_{2}}), for its unary ({hbox {CO}_2}) and ({hbox {H}_{2}hbox {O}}) equilibria and sorption kinetics. Unary ({hbox {CO}_2}) and ({hbox {H}_{2}hbox {O}}) isotherms were obtained via static measurements and fit to the Toth and Guggenheim-Anderson-de Boer (GAB) isotherm models, respectively. Gravimetric uptake measurements were performed to estimate the sorption kinetics. Lewatit beads were crushed to different sizes to estimate the controlling resistance for ({hbox {CO}_2}) sorption. It was found that a portion of the resistance lies in the macropores of the sorbent, while the other is likely related to reaction kinetics. A series of micro-scale dynamic column breakthrough experiments was performed to evaluate equilibrium and kinetic parameters. The linear driving force (LDF) coefficient estimated for 400 ppm ({hbox {CO}_2}) at T = 30(^{circ }) C via gravimetric and breakthrough experiments were (3.7times 10^{-4}~{textrm{s}^{-1}}), and (2 times 10^{-3}~{textrm{s}^{-1}}), respectively. Similarly, for ({hbox {H}_{2}hbox {O}}) at 15% relative humidity and (30^{circ }) C, the LDF coefficient from gravitmetric and breakthrough experiments were (3.38times 10^{-3}~{textrm{s}^{-1}}), and (7.0times 10^{-2}~{textrm{s}^{-1}}), respectively. We postulate that this difference in LDF coefficients might be due to the unreliability of the sensors in detecting low compositions. Breakthrough experiments conducted suggest that the sorption kinetics increase with an increase in ({hbox {CO}_2}) composition and temperature.</div>","PeriodicalId":458,"journal":{"name":"Adsorption","volume":"32 5","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0