Carbon Capture Science & Technology最新文献

{"title":"Emission control and carbon capture from diesel generators and engines: A decade-long perspective","authors":"Shervan Babamohammadi ,&nbsp;Amy R Birss ,&nbsp;Hamid Pouran ,&nbsp;Jagroop Pandhal ,&nbsp;Tohid N. Borhani","doi":"10.1016/j.ccst.2025.100379","DOIUrl":"10.1016/j.ccst.2025.100379","url":null,"abstract":"<div><div>Diesel generators play a crucial role in providing electricity, particularly in less developed economies. As achieving Net Zero 2050 gains more traction, it is essential to address the environmental impacts and emission contributions of diesel generators. In this paper, we review the past decade of research into diesel generator emissions and discuss technologies available to mitigate their environmental effects. Starting with a description of the market importance and environmental problems caused by the release of chemicals like nitrogen oxides (NO_X), sulphur oxides (SO_X), carbon monoxide (CO), hydrocarbons (HC), and carbon dioxide (CO₂) as well as particulate matter (soot), the paper categorises and evaluates advanced mitigation systems. These systems include After-treatment Technologies, Engine Modification Technologies, and Fuel Modification Strategies. After-treatment systems such as Diesel Particulate Filters (DPF), Diesel Oxidation Catalysts (DOC), Selective Catalytic Reduction (SCR) and Exhaust Gas Recirculation (EGR) and their recent advancement are reviewed, followed by Engine Modification technologies, including Fuel Injection Strategies, Miller Cycle and In-cylinder Combustion Control. Then, we summarise the Fuel Modification Strategies and recent developments such as Blending Biodiesel and Diesel, Nanofuel Additives to Diesel, Metal-based Additives to Diesel and blending of Alcohol and Diesel. Furthermore, the potential for retrofitting CO₂ capture technologies to diesel generators is discussed as the topic that has received less attention compared to other areas mentioned above. CO₂ abatement methods, including absorption, adsorption, algae bio-fixation, and oxy-combustion techniques and their potential to be retrofitted for diesel generators, are also discussed. The paper concludes by reflecting on the importance that these technology developments play in the United Nations Sustainable Development Goals (SDGs), specifically in promoting good health, sustainable energy, innovation, and climate action. The work aims to contribute to addressing the significant gap in the decarbonisation of diesel generators by cohesively and systematically reviewing the research topics mentioned earlier. This gap is particularly evident in the application of CO₂ abatement technologies within the context of diesel generators, and this research strives to provide a foundation for further research in this critical area to meet Net Zero targets.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100379"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157585","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":"Washcoated zeolite structured adsorbents for CO2 capture and recovery by rotary adsorption","authors":"Ziyi Li ,&nbsp;Cong Wang ,&nbsp;Jin Xiao ,&nbsp;Xu Jiang ,&nbsp;Ningqi Sun ,&nbsp;Xiong Yang ,&nbsp;Yingshu Liu","doi":"10.1016/j.ccst.2025.100378","DOIUrl":"10.1016/j.ccst.2025.100378","url":null,"abstract":"<div><div>Adsorption has long been recognized as a vital and extensively utilized technology for CO2 capture, for which developing a cost-effective process is a long-sought goal. The structured adsorbent with faster heat and mass transfer, present new opportunities for advancing rotary adsorption process, however, lacks comprehensive evaluation and discussion on CO₂ sorption. In this study, structured adsorbents were prepared by washcoating commercial NaY and 13X zeolites onto a fiberglass honeycomb support. A series of characterizations and breakthrough test demonstrated the advantages of structured adsorbents over conventional pellets. NaY zeolite emerged as the thermodynamically and kinetically preferred CO₂ adsorbent, exhibiting an equilibrium adsorption capacity of 5.972 mmol·g^-1 and an internal mass transfer coefficient of 5.12 × 10^–3 s^-1 (15 % CO₂, 298 K, 1 bar). These values are 18.3 % and 164 % higher than those of its pellet counterpart and 12.3 % and 36.9 % higher than those of the 13X honeycomb. NaY's great adaptability across various applications was indicated by its breakthrough capacities at different temperatures and CO₂ feed concentrations, as well as the minimal influence of feed gas flow rate on CO₂ adsorption equilibrium and kinetics. By employing a recirculating thermal desorption strategy, CO₂ can be enriched from 5 % to 61 %, 15 % to 79 %, and 55 % to 92 %, achieving a 90 % recovery under mild desorption conditions. A two-stage rotary adsorption process for low-concentration CO₂ capture was proposed, enabling CO₂ enriched from 5 % to 55 % in the first stage, and further to 90 % in the second stage. This work introduces a promising approaches for low-cost industrial carbon capture and even direct air carbon capture.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100378"},"PeriodicalIF":0.0,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143386562","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":"Synergistical effect of CoIn alloy and oxygen vacancies over Co-In-Zr ternary catalysts boosting CO2 hydrogenation to methanol","authors":"Xueyang Jiang ,&nbsp;Xiaoshen Li ,&nbsp;Shaohui Xiong ,&nbsp;Wei Liu ,&nbsp;Jiayan Yan ,&nbsp;Xiang Duan ,&nbsp;Song Song ,&nbsp;Qingpeng Cheng ,&nbsp;Ye Tian ,&nbsp;Xingang Li","doi":"10.1016/j.ccst.2025.100376","DOIUrl":"10.1016/j.ccst.2025.100376","url":null,"abstract":"<div><div>The hydrogenation of CO₂ to methanol using H₂ produced from renewable resources has been regarded as an effective way to mitigate CO₂ emissions. Unfortunately, how to obtain both high activity and methanol selectivity is still a trade-off challenge for catalyst development. Herein, we synthesize Co-In-Zr ternary metal oxide precursors via a simple hydrothermal method for hydrogenation of CO₂ to methanol. After reduction by H₂, a part of Co and In cations could be reduced from the solid solution to generate CoIn alloy, simultaneously constructing oxygen vacancy rich environment on the catalyst surface. The increased concentration of surface oxygen vacancies can improve the adsorption and activation of CO₂. Meanwhile, our findings show that the formed CoIn alloy significantly enhances the adsorption and dissociation of H₂, thus accelerating successive hydroconversion of CO₂ and intermediates to methanol. The synergy of CoIn alloy and oxygen vacancies significantly boosts both activity and methanol selectivity. Under the conditions of 300 °C and GHSV of 30,000 ml g_cat^-1 h^-1, the catalyst with a Co: In: Zr molar ratio of 1: 2: 7 achieves the CO₂ conversion of 10.2 %, the methanol selectivity of 81.5 %, and especially the methanol time-space yield up to 860 mg g_cat^-1 h^-1, surpassing the majority of the state-of-the-art In-based catalysts. Moreover, the catalyst exhibits the excellent stability, maintaining the performance within 100 h. Our work provides insights into designing efficient none-noble-metal catalysts for CO₂ hydrogenation reactions.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100376"},"PeriodicalIF":0.0,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157581","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":"Assessing CO2 separation performances of IL/ZIF-8 composites using molecular features of ILs","authors":"Hasan Can Gulbalkan ,&nbsp;Alper Uzun ,&nbsp;Seda Keskin","doi":"10.1016/j.ccst.2025.100373","DOIUrl":"10.1016/j.ccst.2025.100373","url":null,"abstract":"<div><div>Given the vast number and diversity of metal-organic frameworks (MOFs) and ionic liquids (ILs), it is impractical to experimentally test the gas adsorption and separation potential of each one of the possible IL/MOF composites formed by the different combinations of these two components. In this study, we developed a comprehensive computational approach integrating Conductor-like Screening Model for Realistic Solvents (COSMO-RS) calculations, density functional theory (DFT) calculations, Grand Canonical Monte Carlo (GCMC) simulations, and machine learning (ML) algorithms to evaluate a wide variety of IL-incorporated ZIF-8 composites for CO₂ separations. We examined 1322 different types of IL/ZIF-8 composites, covering the largest variety of ILs studied to date (8 cations and 35 anions) at various loadings, for flue gas separation and natural gas purification. We simulated CO₂, CH₄, and N₂ adsorption properties of these composites and used this high-quality molecular simulation data to develop ML models that can predict gas uptakes of any IL/ZIF-8 composite when chemical and structural features of the IL are given. The accurate prediction power of these ML models was shown by comparing their estimates with the experimental and simulation data. Our approach significantly accelerates the assessment of a very large number of IL/ZIF-8 composites and reveals the key molecular features of ILs to make composites for achieving superior gas separation performance.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100373"},"PeriodicalIF":0.0,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157455","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":"A novel insight into CO2-cured cement modified by ultrasonic carbonated waste incineration fly ash: Mechanical properties, carbon sequestration, and heavy metals immobilization","authors":"Jie Chen,&nbsp;Zheming Zhang,&nbsp;Yizhe Shen,&nbsp;Hailong Li,&nbsp;Xiaoqing Lin,&nbsp;Xiaodong Li,&nbsp;Jianhua Yan","doi":"10.1016/j.ccst.2025.100368","DOIUrl":"10.1016/j.ccst.2025.100368","url":null,"abstract":"<div><div>As a typical alkaline hazardous waste, municipal solid waste incineration fly ash is used for CO₂ storage and cement supplementary material, contributing to carbon emission reduction and hazardous waste management. This study proposed a new idea of using ultrasonic accelerated carbonated fly ash (UFA) to modify CO₂ mineralization cured cement, aimed at recycling FA while enhancing cement performance. Incorporating small amounts of UFA (5% and 10%) significantly improved the mechanical properties of cement paste, with the optimal inclusion of 10% UFA yielding a compressive strength of 50.23 MPa—higher than that of pure cement (41.04 MPa). The UFA contributed to pore filling and acts as a nucleation site for CO₂ mineralization, forming stable flaky calcite and thus enhancing the microstructure. Conversely, higher UFA contents (20% and 50%) reduced performance due to a dilution effect that impaired the hydration product structure. Kinetic analysis via the Avrami-Erofeev model revealed that CO₂ diffusion and crystal growth primarily control the mineralization reaction. The 50%UFA cement paste exhibited the greatest carbon fixation depth, with a carbon sequestration capacity of 186 g-CO₂/kg-PC. This was attributed to its enhanced porosity and pore size, which facilitated CO₂ diffusion. The 10%UFA cement paste, which had the highest compressive strength, also achieved a carbon sequestration capacity of 158 g-CO₂/kg-PC, surpassing the 144 g-CO₂/kg-PC of the pure cement paste. Moreover, the proposed UFA-modified CO₂ mineralization cement displayed a low risk of heavy metal leaching under alkaline or acidic environment.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100368"},"PeriodicalIF":0.0,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100120","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":"Structural design of covalent organic frameworks and their recent advancements in carbon capture applications: A review","authors":"Mohamed Essalhi ,&nbsp;El-Hassan Mahmoud ,&nbsp;Ali Tayeb ,&nbsp;Rawan A. Al-Qahtani ,&nbsp;Ahmad Salam Farooqi ,&nbsp;Mahmoud Abdelnaby","doi":"10.1016/j.ccst.2025.100370","DOIUrl":"10.1016/j.ccst.2025.100370","url":null,"abstract":"<div><div>Covalent organic frameworks (COFs) are an attractive subclass of porous solids due to their strong potential in various applications. The reticular chemistry behind COF design enables the achievement of desired functional properties. Additionally, the post-synthesis modification (PSM) of COFs is an effective method for tuning their skeleton architecture, chemical stability, and chemical interactions with guest molecules to enhance specific properties. However, the inherent challenges related to their chemical and thermal stability have limited their widespread use. Recently, various approaches for PSM on the pre-established covalent framework have been reported, providing an opportunity to tune the functional properties of COFs while maintaining and even strengthening their fundamental framework integrity and crystallinity. This review highlights recent advancements in synthesis strategies and PSM of COFs with enhanced stability and versatile functional properties. The discussion highlights different design approaches of COFs, such as the compatible reticular chemistry of their stronger covalent bonds and rigid building blocks and new innovative PSM techniques, including cross-linking and surface functionalization. Additionally, we explore the impact of these strategies on COF properties, such as porosity, chemical and thermal stability, and their surface chemistry, thereby expanding their practical applications. We provide a comprehensive overview of current advances in COF solids and performances in gas adsorption and separation applications, specifically for carbon capture and conversion, as well as in direct air capture (DAC) of CO₂. This review aims to offer insights into the future directions of COF research, focusing on developing robust and functional COFs that meet real-world carbon capture and utilization requirements.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100370"},"PeriodicalIF":0.0,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157583","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":"Low-carbon, hydrogen-rich syngas from sorption-enhanced gasification: A review","authors":"Godknows Dziva ,&nbsp;Jonas Weitzel ,&nbsp;Pengjun Cui ,&nbsp;Maxine Yew ,&nbsp;Guangchao Ding ,&nbsp;Liang Zeng ,&nbsp;Songgeng Li","doi":"10.1016/j.ccst.2025.100372","DOIUrl":"10.1016/j.ccst.2025.100372","url":null,"abstract":"<div><div>This review aims to provide a comprehensive overview of sorption-enhanced gasification (SEG) with CaO, highlighting its potential as an efficient and sustainable energy conversion technology. SEG integrates dual bed steam gasification with <em>in situ</em> CO₂ removal using CaO, efficiently converting solid carbonaceous fuels such as biomass and low-rank coal into hydrogen-rich (up to 80 vol% H₂), low-carbon and tar, medium calorific value and nitrogen-free syngas that can be adapted for various downstream applications. The review details the working principle, operating conditions and reaction mechanisms of SEG, emphasizing how these factors influence product distribution. Calcium sorbents are central to the SEG process, so their reactions, catalytic activity and limitations are discussed in this review. Pilot-scale tests are examined to underscore process engineering advancements as well as to highlight scale-up challenges that currently limit the technology to TRL 5–6. Unsustainable long-term sorbent performance and energy penalties from sorbent regeneration and CO₂ capture still need to be addressed through scalable and cost-effective material development and process engineering. This review discusses various process intensification concepts as potential solutions to the inherent shortcomings of SEG. Process systems analyses examined indicate the potential of SEG in hydrogen, synthetic fuel and electricity production, positioning it as a promising technology for decentralized sustainable energy conversion. Furthermore, the review explores the sustainable repurposing and disposal of spent solids to foster circular economies. Overall, this comprehensive review provides crucial insights to further leverage and advance the SEG process, offering a platform for future research and development.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100372"},"PeriodicalIF":0.0,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157584","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":"Recent innovations in spinel oxide-based catalysts for CO2 hydrogenation to olefins","authors":"Abdelhakim Elmhamdi ,&nbsp;Maryam Khaleel","doi":"10.1016/j.ccst.2025.100367","DOIUrl":"10.1016/j.ccst.2025.100367","url":null,"abstract":"<div><div>With the increased urgency for reducing CO₂ emissions, CO₂ capture and hydrogenation into hydrocarbons stands out as a promising approach. This review highlights recent advancements in the evaluation of spinel oxide-based catalysts for CO₂ hydrogenation into olefins, covering un-doped, doped, and bi-functional spinel oxide-based catalysts. The effect of catalyst composition and promotion on catalytic performance is thoroughly discussed. Among the various spinel oxides, Fe₃O₄ and K-ZnFe₂O₄ have shown promising performance, exhibiting 43 % and 46.7 % CO₂ conversion, respectively, and 41.5 % and 68.9 % selectivity towards olefins, respectively. Bi-functional catalysts combining spinel oxides with SAPO-34 have shown enhanced olefins selectivity up to 87 % and low methane formation. Bi-functional zinc-based spinel catalysts were shown to outperform bi-functional magnesium-based spinel catalysts, due to their better ability to activate hydrogen and the balance between basicity and reducibility. However, despite improved olefins selectivity, CO₂ conversion remains low (13–14 %), highlighting the need for further optimization. This review also provides a comprehensive analysis of the active sites responsible for catalysis, and the proposed mechanisms for CO₂ hydrogenation. The mechanism of CO₂ hydrogenation over spinel oxide catalysts is strongly influenced by the catalyst composition. The two main proposed pathways are: i) the redox mechanism (such as on ZnFe₂O₄), and ii) the formate mechanism (such as on ZnAl₂O₄/SAPO-34). In this review, challenges such as achieving higher CO₂ conversion and olefins selectivity, enhancing catalyst stability, and understanding the underlying reaction mechanisms are discussed. Finally, future research opportunities, including enhanced catalyst design, exploring multi-component systems, developing underutilized promoters like cesium, and utilizing advanced <em>in-situ</em> characterization techniques and computational modeling, are proposed to advance the field of CO₂ hydrogenation.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100367"},"PeriodicalIF":0.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100116","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":"Integrated calcium looping technologies for enhanced CO2 valorisation—A critical review","authors":"Priyanka Kumari ,&nbsp;Nahla Al Amoodi ,&nbsp;Ludovic F. Dumée ,&nbsp;Ahmed Al Hajaj","doi":"10.1016/j.ccst.2025.100371","DOIUrl":"10.1016/j.ccst.2025.100371","url":null,"abstract":"<div><div>The calcium looping (CaL) process stands out as a promising technology for carbon dioxide (CO₂) capture, which exhibits two essential phases: carbonation and calcination. CaL process has several advantages over conventional systems such as availability of abundant and low cost CaO sorbents, reduced environmental impact, lower greenhouse emissions and energy requirements. CaL offers easy and innovative schemes to integrate renewable energy such as concentrated solar power, oxy-fuel and chemical looping process and steam dilution to further enhance the overall efficiency of the system. The review first focuses on summarizing the characteristics and operational parameters of these process integrated CaL facilities while highlighting key experimental findings. The examination of innovative sorbent materials utilized within integrated CaL processes has been addressed, emphasizing pathways directed towards enhancing reaction efficacy, energy conservation, and holistic sustainability attained via process integration and intensification. Meanwhile, strategies to overcome the limitation of CaL process in terms of rapid sintering of sorbent particles over time have also been discussed. Further, the approaches for integrating CaL into industrial plants such as power, cement and steel plants have been identified and compared to realize significant reduction of energy penalty compared to conventional system. The impact of multivariate latent variable (LV) modeling on the integrated CaL process has been examined. Based on the review, CaL showed equivalent or better performance in reducing CO₂ emissions (global warming potential or climate change impact indicator) in comparison to alternative scenarios.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100371"},"PeriodicalIF":0.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157582","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":"Enzyme assisted direct air capture of carbon dioxide","authors":"Agnese Zaghini ,&nbsp;Silke Flindt Badino ,&nbsp;Stefanie Neun ,&nbsp;Peter Westh","doi":"10.1016/j.ccst.2025.100369","DOIUrl":"10.1016/j.ccst.2025.100369","url":null,"abstract":"<div><div>Direct air capture (DAC) has been widely advocated as a key tool in the strive towards zero emissions. Here we present the first systematic data on enzyme assisted DAC and show that CO₂ absorption rate tripled upon addition of carbonic anhydrase (CA) at micromolar concentrations, reaching a capture efficiency of 60%. We found that CA promoted high absorption efficiency as the flow rate was raised and we rationalized these observations based on molecular mechanism of enzyme assisted capture. Furthermore, measurements of absorption rates in KOH and carbonate with 1 μM CA showed comparable kinetics suggesting that enzyme application could offset kinetic advantages of hydroxides. These attributes may eventually pave the way for DAC in sorbents with low regeneration energies.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100369"},"PeriodicalIF":0.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157458","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}