Pub Date : 2024-11-12DOI: 10.1016/j.ccst.2024.100336
Ahmad Salam Farooqi , Abdelwahab N. Allam , Muhammad Zubair Shahid , Anas Aqil , Kevin Fajri , Sunhwa Park , Omar Y. Abdelaziz , Mahmoud M. Abdelnaby , Mohammad M. Hossain , Mohamed A. Habib , Syed Muhammad Wajahat ul Hasnain , Ali Nabavi , Mingming Zhu , Vasilije Manovic , Medhat A. Nemitallah
The sorption-enhanced steam methane reforming (SE-SMR) process, which integrates methane steam reforming with in situ CO2 capture, represents a breakthrough technology for clean hydrogen production. This comprehensive review thoroughly explores the SE-SMR process, highlighting its ability to efficiently combine carbon capture with hydrogen generation. The review evaluates the mechanisms of SE-SMR and evaluates a range of innovative sorbent materials, such as CaO-based, alkali-ceramic, hydrotalcite, and waste-derived sorbents. The role of catalysts in enhancing hydrogen production within SE-SMR processes is also discussed, with a focus on bi-functional materials. In addition to examining reaction kinetics and advanced process configurations, this review touches on the techno-economic aspects of SE-SMR. While the analysis does not provide an in-depth economic evaluation, key factors such as potential capital costs (CAPEX), operational expenses (OPEX), and scalability are considered. The review outlines the potential of SE-SMR to offer more efficient hydrogen production, with the added benefit of in situ carbon capture simplifying the process design. Although a detailed economic comparison with other hydrogen production technologies was not the focus, this review emphasizes SE-SMR's promise as a scalable and flexible solution for clean energy. With its integrated design, SE-SMR offers pathways to industrial-scale hydrogen production. This review serves as a valuable resource for researchers, policymakers, and industry experts committed to advancing sustainable and efficient hydrogen production technologies.
{"title":"Advancements in sorption-enhanced steam reforming for clean hydrogen production: A comprehensive review","authors":"Ahmad Salam Farooqi , Abdelwahab N. Allam , Muhammad Zubair Shahid , Anas Aqil , Kevin Fajri , Sunhwa Park , Omar Y. Abdelaziz , Mahmoud M. Abdelnaby , Mohammad M. Hossain , Mohamed A. Habib , Syed Muhammad Wajahat ul Hasnain , Ali Nabavi , Mingming Zhu , Vasilije Manovic , Medhat A. Nemitallah","doi":"10.1016/j.ccst.2024.100336","DOIUrl":"10.1016/j.ccst.2024.100336","url":null,"abstract":"<div><div>The sorption-enhanced steam methane reforming (SE-SMR) process, which integrates methane steam reforming with in situ CO<sub>2</sub> capture, represents a breakthrough technology for clean hydrogen production. This comprehensive review thoroughly explores the SE-SMR process, highlighting its ability to efficiently combine carbon capture with hydrogen generation. The review evaluates the mechanisms of SE-SMR and evaluates a range of innovative sorbent materials, such as CaO-based, alkali-ceramic, hydrotalcite, and waste-derived sorbents. The role of catalysts in enhancing hydrogen production within SE-SMR processes is also discussed, with a focus on bi-functional materials. In addition to examining reaction kinetics and advanced process configurations, this review touches on the techno-economic aspects of SE-SMR. While the analysis does not provide an in-depth economic evaluation, key factors such as potential capital costs (CAPEX), operational expenses (OPEX), and scalability are considered. The review outlines the potential of SE-SMR to offer more efficient hydrogen production, with the added benefit of in situ carbon capture simplifying the process design. Although a detailed economic comparison with other hydrogen production technologies was not the focus, this review emphasizes SE-SMR's promise as a scalable and flexible solution for clean energy. With its integrated design, SE-SMR offers pathways to industrial-scale hydrogen production. This review serves as a valuable resource for researchers, policymakers, and industry experts committed to advancing sustainable and efficient hydrogen production technologies.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100336"},"PeriodicalIF":0.0,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697778","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}
Pub Date : 2024-11-09DOI: 10.1016/j.ccst.2024.100337
Bablu Alawa, Sankar Chakma
The single-use waste plastics is one of the major concerns globally to society as well as to the scientific community. It is even more so at the present-day due to the rapid production of plastic and polymeric materials to meet the societal demand. The consumers’ demand and dependency on plastic is huge due to its versatility, low production cost, light weight and numerous applications of it. With increasing the demand, waste plastic generation is also high that leads to creation of environmental and health problems like vomiting, anemia, headache, kidney, liver damage, cancer, shortened lifespan and chronic damage to nervous system. Therefore, new and modern techniques such as pyrolysis has been developed to reduce the environmental pollution and cutting of carbon tracers of plastic products by reducing the emissions of oxides of carbon like monoxide (CO) and carbon dioxide (CO2) as compared to other technologies. This review paper mainly focused on the plastic waste generation scenario in India and minimization technique to produce fuels. Additionally, other new technologies to handle waste plastic along with energy generation (in the form of oil and gas production) with the specific process parameters (reaction time, reactor type, catalyst type and reaction temperature) to obtain the maximum yield are also discussed. The technoeconomic analysis and energy participation of waste plastic oil has also been highlighted to enhance the utilization of pyrolysis products and their futuristic application as an automotive fuel. An attempt was also made to analyze the emissions reduction as well as promotion of circular economy.
{"title":"A review on feasibility and techno-economic analysis of hydrocarbon liquid fuels production via catalytic pyrolysis of waste plastic materials","authors":"Bablu Alawa, Sankar Chakma","doi":"10.1016/j.ccst.2024.100337","DOIUrl":"10.1016/j.ccst.2024.100337","url":null,"abstract":"<div><div>The single-use waste plastics is one of the major concerns globally to society as well as to the scientific community. It is even more so at the present-day due to the rapid production of plastic and polymeric materials to meet the societal demand. The consumers’ demand and dependency on plastic is huge due to its versatility, low production cost, light weight and numerous applications of it. With increasing the demand, waste plastic generation is also high that leads to creation of environmental and health problems like vomiting, anemia, headache, kidney, liver damage, cancer, shortened lifespan and chronic damage to nervous system. Therefore, new and modern techniques such as pyrolysis has been developed to reduce the environmental pollution and cutting of carbon tracers of plastic products by reducing the emissions of oxides of carbon like monoxide (CO) and carbon dioxide (CO<sub>2</sub>) as compared to other technologies. This review paper mainly focused on the plastic waste generation scenario in India and minimization technique to produce fuels. Additionally, other new technologies to handle waste plastic along with energy generation (in the form of oil and gas production) with the specific process parameters (reaction time, reactor type, catalyst type and reaction temperature) to obtain the maximum yield are also discussed. The technoeconomic analysis and energy participation of waste plastic oil has also been highlighted to enhance the utilization of pyrolysis products and their futuristic application as an automotive fuel. An attempt was also made to analyze the emissions reduction as well as promotion of circular economy.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"14 ","pages":"Article 100337"},"PeriodicalIF":0.0,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142697769","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}
Pub Date : 2024-11-05DOI: 10.1016/j.ccst.2024.100316
Wenkang Deng , Xiaofeng Xie , Yalou Guo , Guoping Hu
A series of negative impacts caused by greenhouse gas emissions have driven mankind to look for a more efficient and economical strategy to reduce emissions. Methane is the second most abundant anthropogenic greenhouse gas, and implementing cost-effective technologies to reduce its emissions is a crucial pathway toward achieving the milestones outlined in the Paris Agreement. The energy sector has a greater potential for methane emission reductions than other sectors, such as (agriculture and waste) with 75 % reductions achievable by 2050 using existing technologies. Capturing and utilizing fugitive methane from the energy sector could offset the cost of emission reductions to some extent. We analyzed existing methane abatement technologies such as leak detection and repair, flaring, technology standards, and methane capture technologies and found that there are well-established solutions for methane leakage at medium and high concentrations. However, capturing methane from low-concentration sources to meet transportation or utilization requirements remains a significant technical challenge, highlighting the need for advances in low-grade methane enrichment technologies. Adsorption technology has been regarded as a promising methodology for methane capture in recent decades due to various advantages such as high flexibility, low capital investment and energy consumption, and a well-established technological framework. This review provides an overview of recent methane emission trends and prevalent methane abatement strategies, offering a brief analysis of the merits and drawbacks associated with existing methane capture technologies for industrial applications. We analyze the current methane emission reduction policies from major economies and identify a gap between proposed policies and practical actions, suggesting that constructing methane detection systems and developing low-concentration methane capture technologies is a key approach to closing the gap.
{"title":"Breakthroughs in CH4 capture technologies: Key to reducing fugitive methane emissions in the energy sector","authors":"Wenkang Deng , Xiaofeng Xie , Yalou Guo , Guoping Hu","doi":"10.1016/j.ccst.2024.100316","DOIUrl":"10.1016/j.ccst.2024.100316","url":null,"abstract":"<div><div>A series of negative impacts caused by greenhouse gas emissions have driven mankind to look for a more efficient and economical strategy to reduce emissions. Methane is the second most abundant anthropogenic greenhouse gas, and implementing cost-effective technologies to reduce its emissions is a crucial pathway toward achieving the milestones outlined in the Paris Agreement. The energy sector has a greater potential for methane emission reductions than other sectors, such as (agriculture and waste) with 75 % reductions achievable by 2050 using existing technologies. Capturing and utilizing fugitive methane from the energy sector could offset the cost of emission reductions to some extent. We analyzed existing methane abatement technologies such as leak detection and repair, flaring, technology standards, and methane capture technologies and found that there are well-established solutions for methane leakage at medium and high concentrations. However, capturing methane from low-concentration sources to meet transportation or utilization requirements remains a significant technical challenge, highlighting the need for advances in low-grade methane enrichment technologies. Adsorption technology has been regarded as a promising methodology for methane capture in recent decades due to various advantages such as high flexibility, low capital investment and energy consumption, and a well-established technological framework. This review provides an overview of recent methane emission trends and prevalent methane abatement strategies, offering a brief analysis of the merits and drawbacks associated with existing methane capture technologies for industrial applications. We analyze the current methane emission reduction policies from major economies and identify a gap between proposed policies and practical actions, suggesting that constructing methane detection systems and developing low-concentration methane capture technologies is a key approach to closing the gap.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100316"},"PeriodicalIF":0.0,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593570","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}
Pub Date : 2024-11-04DOI: 10.1016/j.ccst.2024.100323
Xin Xiao , Zhengliang Han , Yunfeng Wang , Ming Li
Solid desiccant dehumidification system can use low-grade energy for regeneration process and reduce the electrical energy consumption, thus saving energy and reducing carbon emissions. The choice of desiccant can significantly affect the dehumidification performance of the system. In the present study, the composite desiccant was synthesized by adding silica gel (SG), polyvinylpyrrolidone (PVP) and expanded graphite (EG) with calcium alginate hydrogel (CAH) as the matrix, named CAH/SG/EG. Subsequently, the characteristics of the samples were analyzed, and a dehumidification system was built to reveal the effects of different working conditions on the dehumidification performances. The results show that CAH/SG/20 wt.% EG has the optimal adsorption kinetics among all samples. Its moisture adsorption capacity reaches up to 1.009 g/g at 25 °C and 70 % relative humidity (RH), and its adsorption rate is 0.0179 g/(g·min). Especially, its moisture adsorption capacity can still reach 0.44 g/g at 30 % RH, showing a good adsorption capacity at lower RH. Simultaneously, the thermal conductivity of composites gradually increases from 0.449 W/(m·K) to 0.716 W/(m·K) with the addition of EG, increasing by about 60 %. In addition, the dehumidification performance of CAH/SG/20 wt.% EG is higher than that of CAH/SG, and the dehumidification performance of the system shows an ascending, descending and descending trends with the increase of inlet air moisture content, inlet air temperature and inlet air flow, respectively.
{"title":"Thermal characterization and moisture adsorption performance of calcium alginate hydrogel/silica gel/polyvinylpyrrolidone/expanded graphite composite desiccant","authors":"Xin Xiao , Zhengliang Han , Yunfeng Wang , Ming Li","doi":"10.1016/j.ccst.2024.100323","DOIUrl":"10.1016/j.ccst.2024.100323","url":null,"abstract":"<div><div>Solid desiccant dehumidification system can use low-grade energy for regeneration process and reduce the electrical energy consumption, thus saving energy and reducing carbon emissions. The choice of desiccant can significantly affect the dehumidification performance of the system. In the present study, the composite desiccant was synthesized by adding silica gel (SG), polyvinylpyrrolidone (PVP) and expanded graphite (EG) with calcium alginate hydrogel (CAH) as the matrix, named CAH/SG/EG. Subsequently, the characteristics of the samples were analyzed, and a dehumidification system was built to reveal the effects of different working conditions on the dehumidification performances. The results show that CAH/SG/20 wt.% EG has the optimal adsorption kinetics among all samples. Its moisture adsorption capacity reaches up to 1.009 g/g at 25 °C and 70 % relative humidity (RH), and its adsorption rate is 0.0179 g/(g·min). Especially, its moisture adsorption capacity can still reach 0.44 g/g at 30 % RH, showing a good adsorption capacity at lower RH. Simultaneously, the thermal conductivity of composites gradually increases from 0.449 W/(m·K) to 0.716 W/(m·K) with the addition of EG, increasing by about 60 %. In addition, the dehumidification performance of CAH/SG/20 wt.% EG is higher than that of CAH/SG, and the dehumidification performance of the system shows an ascending, descending and descending trends with the increase of inlet air moisture content, inlet air temperature and inlet air flow, respectively.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100323"},"PeriodicalIF":0.0,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578311","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}
Pub Date : 2024-10-31DOI: 10.1016/j.ccst.2024.100335
Saleem Nawaz Khan , Ming Zhao
The CO2 concentration in the atmosphere is increasing at an alarming rate, which is causing distress to human society and the natural environment. Adsorption is one of the most widely used methods of removing CO2 from flue gases, which reduces its adverse effects on our environment. For adsorption purposes, a facile green solvent-assisted de-novo synthesis approach was developed to construct a UiO-66′s structure to target CO2 at low pressure due to the partial pressure of CO2 in flue gases in the atmosphere (0.01⁓0.02 MPa). In the de-novo synthesis approach, a combination of various types of modulators and deep eutectic solvents (DES) are utilized to graft structural defects and induce quantitative and dispersive deep eutectic solvents onto the UiO-66 structure, respectively. The green solvent-assisted de-novo synthesis approach helped to tune all three structural parameters and preserve extra open metal sites (Lewis acid and Bronsted basis sites) with active NH2 and OH groups for improved CO2 adsorption and kinetics under flue gas conditions (CO2/N2=15/85 %). In comparison to the parent UiO-66, de-novo synthesized ChClPropx5@UiO-66 showed increased CO2 uptake (65.04 mg g-1) by 73 % at 0.15 bar and 25 °C, and the cyclic capacity remained almost similar over 10 consecutive cycles with an almost 94 % retention rate. After 3 times of regeneration at 105 °C under N2 atmosphere, the sample reserved almost similar adsorption capacity and could be recycled without dropping CO2 uptake. The strong and rapid interaction between guest CO2 and de-novo synthesized UiO-66 was confirmed by pseudo-first-order and second-order kinetics with reaction rate constants of 0.00026 and 0.00259, respectively. Furthermore, through periodic Density Functional Theory (DFT) calculations, a variety of linker defects are engineered onto the UiO-66 structure to preserve more open metal sites. For each of the engineering defects, free energies, adsorption energies, and the interaction of CO2 molecules on defect structures with bond length (Ɩ, Å) and bond angle (θ˚) are calculated for the most stable structures of UiO-66.
{"title":"Green solvents assisted de-novo synthesis and defect-engineered UiO-66 for improved CO2 adsorption and kinetics- experimental and DFT approach","authors":"Saleem Nawaz Khan , Ming Zhao","doi":"10.1016/j.ccst.2024.100335","DOIUrl":"10.1016/j.ccst.2024.100335","url":null,"abstract":"<div><div>The CO<sub>2</sub> concentration in the atmosphere is increasing at an alarming rate, which is causing distress to human society and the natural environment. Adsorption is one of the most widely used methods of removing CO<sub>2</sub> from flue gases, which reduces its adverse effects on our environment. For adsorption purposes, a facile green solvent-assisted de-novo synthesis approach was developed to construct a UiO-66′s structure to target CO<sub>2</sub> at low pressure due to the partial pressure of CO<sub>2</sub> in flue gases in the atmosphere (0.01⁓0.02 MPa). In the de-novo synthesis approach, a combination of various types of modulators and deep eutectic solvents (DES) are utilized to graft structural defects and induce quantitative and dispersive deep eutectic solvents onto the UiO-66 structure, respectively. The green solvent-assisted de-novo synthesis approach helped to tune all three structural parameters and preserve extra open metal sites (Lewis acid and Bronsted basis sites) with active NH<sub>2</sub> and OH groups for improved CO<sub>2</sub> adsorption and kinetics under flue gas conditions (CO<sub>2</sub>/N<sub>2</sub>=15/85 %). In comparison to the parent UiO-66, de-novo synthesized ChClProp<sub>x5</sub>@UiO-66 showed increased CO<sub>2</sub> uptake (65.04 mg g<sup>-1</sup>) by 73 % at 0.15 bar and 25 °C, and the cyclic capacity remained almost similar over 10 consecutive cycles with an almost 94 % retention rate. After 3 times of regeneration at 105 °C under N<sub>2</sub> atmosphere, the sample reserved almost similar adsorption capacity and could be recycled without dropping CO<sub>2</sub> uptake. The strong and rapid interaction between guest CO<sub>2</sub> and de-novo synthesized UiO-66 was confirmed by pseudo-first-order and second-order kinetics with reaction rate constants of 0.00026 and 0.00259, respectively. Furthermore, through periodic Density Functional Theory (DFT) calculations, a variety of linker defects are engineered onto the UiO-66 structure to preserve more open metal sites. For each of the engineering defects, free energies, adsorption energies, and the interaction of CO<sub>2</sub> molecules on defect structures with bond length (Ɩ, Å) and bond angle (θ˚) are calculated for the most stable structures of UiO-66.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100335"},"PeriodicalIF":0.0,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660349","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}
Pub Date : 2024-10-30DOI: 10.1016/j.ccst.2024.100325
Tohid N. Borhani , Mohammad Reza Abbasi , Morteza Hosseinpour , Mohsen Salimi , Morteza Afkhamipour , Eni Oko , Kyra Sedransk Campbell , Navid Kahllaghi
In order to control global warming and CO2 emissions to the atmosphere, carbon capture from the carbon production source is considered the short- to midterm solution. The CO2 absorption-desorption process is recognised as a mature process that has been implemented for many years. However, this process has several weaknesses, such as the considerable energy requirements for regeneration in the desorber unit and degradation of solvent when using amine solutions. In this study, we examine several elements of absorption-desorption cycles for CO2 capture. This includes modelling, experimentation categorised by the unit operation employed, techno-economic analysis, optimisation, control strategies, and life cycle assessments. It discusses steady-state, dynamic, and data-driven based models, along with a selection of experimental studies conducted at the laboratory scale, detailing solvents used, column characteristics, and equipment specifications. Furthermore, it examines optimisation techniques, techno-economic assessments (TEA), and industrial applications, categorising them into power sectors and industries, and comparing their costs and energy requirements for carbon capture processes. Additionally, different control strategies for absorption-desorption systems are reviewed, compared, and discussed. Life cycle assessments (LCA), focussing on solvents like amine and ammonia, are also explored, with summarised information presented in tables for each aspect of the study. It's essential to highlight the significance of conducting studies on the absorption-desorption cycles for several reasons. Firstly, these studies enable the investigation of amine degradation and the reclaiming of amines, shedding light on crucial aspects of solvent performance. Additionally, absorption-desorption cycle studies provide valuable insights into the energy requirements for solvent regeneration. Ultimately, these studies are crucial in the advancement of more stable solvents, offering the potential to reduce the cost associated with solvent-based carbon capture technologies. This approach optimises important performance metrics such as cyclic capacity, recovery quality, and the purity of the treated stream which are critical parameters for CO2 absorption-desorption process.
{"title":"CO2 absorption-desorption cycles: Progress, gaps, and future","authors":"Tohid N. Borhani , Mohammad Reza Abbasi , Morteza Hosseinpour , Mohsen Salimi , Morteza Afkhamipour , Eni Oko , Kyra Sedransk Campbell , Navid Kahllaghi","doi":"10.1016/j.ccst.2024.100325","DOIUrl":"10.1016/j.ccst.2024.100325","url":null,"abstract":"<div><div>In order to control global warming and CO<sub>2</sub> emissions to the atmosphere, carbon capture from the carbon production source is considered the short- to midterm solution. The CO<sub>2</sub> absorption-desorption process is recognised as a mature process that has been implemented for many years. However, this process has several weaknesses, such as the considerable energy requirements for regeneration in the desorber unit and degradation of solvent when using amine solutions. In this study, we examine several elements of absorption-desorption cycles for CO<sub>2</sub> capture. This includes modelling, experimentation categorised by the unit operation employed, techno-economic analysis, optimisation, control strategies, and life cycle assessments. It discusses steady-state, dynamic, and data-driven based models, along with a selection of experimental studies conducted at the laboratory scale, detailing solvents used, column characteristics, and equipment specifications. Furthermore, it examines optimisation techniques, techno-economic assessments (TEA), and industrial applications, categorising them into power sectors and industries, and comparing their costs and energy requirements for carbon capture processes. Additionally, different control strategies for absorption-desorption systems are reviewed, compared, and discussed. Life cycle assessments (LCA), focussing on solvents like amine and ammonia, are also explored, with summarised information presented in tables for each aspect of the study. It's essential to highlight the significance of conducting studies on the absorption-desorption cycles for several reasons. Firstly, these studies enable the investigation of amine degradation and the reclaiming of amines, shedding light on crucial aspects of solvent performance. Additionally, absorption-desorption cycle studies provide valuable insights into the energy requirements for solvent regeneration. Ultimately, these studies are crucial in the advancement of more stable solvents, offering the potential to reduce the cost associated with solvent-based carbon capture technologies. This approach optimises important performance metrics such as cyclic capacity, recovery quality, and the purity of the treated stream which are critical parameters for CO<sub>2</sub> absorption-desorption process.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100325"},"PeriodicalIF":0.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142551550","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}
Pub Date : 2024-10-30DOI: 10.1016/j.ccst.2024.100302
Rasmeet Singh , Lizhuo Wang , Junhan Cheng , Haoyue Sun , Chunfei Wu , Jun Huang
Global warming led by excessive CO2 emission is a significant challenge. CO2 capture is recognised as an efficient way to mitigate this issue. In this study, we successfully synthesized a series of activation-free nitrogen-doped mesoporous carbon nanospheres (Mx: where x is ratio of urea/phenol) via an aqueous synthesis route, using urea-phenol-formaldehyde resin as a precursor and triblock copolymer F127 as a soft template. These Mx exhibited nitrogen contents ranging from 0.48 % to 1.52 % and with high surface areas within the range of 486.382 to 683.891 m²g⁻¹. Furthermore, they demonstrated a uniform pore channel diameter of around 3.2 nm. The incorporated nitrogen atoms primarily in the forms of pyrrolic, pyridine, and amine groups, offers abundant adsorption sites for CO2. The CO2 adsorption and desorption performance of as-synthesized Mx were systematically studied under various CO2 feed concentrations, including 10 % CO2 by volume, compressed air (mimicking direct air capture (DAC)), and 10 % CO2 by volume at 90 % relative humidity, all at 298 K and ∼1 atm. Interestingly, the M0.1 sample displayed exceptional CO2 capture performance, achieving a capacity of 2.53 mmol g⁻¹ (or 4.8 mmol m⁻²) at a 10 % CO2 by volume feed. This outstanding CO2 adsorption capacity can be attributed to the synergistic effects of ordered mesopore channels, abundant structural micropores, and nitrogen functionalities, facilitating efficient CO2 adsorption and desorption. Additionally, M0.1 also displayed high hydrophobicity character, making it ideal for CO2 adsorption under humid conditions. Moreover, the Mx displayed remarkable stability and recyclability, positioning them as promising and environmentally friendly adsorbents for CO2 capture and separation under practical operating conditions. Additionally, the proposed Mx does not need any additional alkali activation before application, thus simplifying the implementation process, reducing costs, and complexity.
{"title":"Synthesis of nitrogen-doped mesoporous carbon nanospheres using urea-phenol-formaldehyde resin for efficient CO2 adsorption–desorption studies","authors":"Rasmeet Singh , Lizhuo Wang , Junhan Cheng , Haoyue Sun , Chunfei Wu , Jun Huang","doi":"10.1016/j.ccst.2024.100302","DOIUrl":"10.1016/j.ccst.2024.100302","url":null,"abstract":"<div><div>Global warming led by excessive CO<sub>2</sub> emission is a significant challenge. CO<sub>2</sub> capture is recognised as an efficient way to mitigate this issue. In this study, we successfully synthesized a series of activation-free nitrogen-doped mesoporous carbon nanospheres (M<sub>x</sub>: where x is ratio of urea/phenol) via an aqueous synthesis route, using urea-phenol-formaldehyde resin as a precursor and triblock copolymer F127 as a soft template. These M<sub>x</sub> exhibited nitrogen contents ranging from 0.48 % to 1.52 % and with high surface areas within the range of 486.382 to 683.891 m²g⁻¹. Furthermore, they demonstrated a uniform pore channel diameter of around 3.2 nm. The incorporated nitrogen atoms primarily in the forms of pyrrolic, pyridine, and amine groups, offers abundant adsorption sites for CO<sub>2</sub>. The CO<sub>2</sub> adsorption and desorption performance of as-synthesized M<sub>x</sub> were systematically studied under various CO<sub>2</sub> feed concentrations, including 10 % CO<sub>2</sub> by volume, compressed air (mimicking direct air capture (DAC)), and 10 % CO<sub>2</sub> by volume at 90 % relative humidity, all at 298 K and ∼1 atm. Interestingly, the M<sub>0.1</sub> sample displayed exceptional CO<sub>2</sub> capture performance, achieving a capacity of 2.53 mmol g⁻¹ (or 4.8 mmol m⁻²) at a 10 % CO<sub>2</sub> by volume feed. This outstanding CO<sub>2</sub> adsorption capacity can be attributed to the synergistic effects of ordered mesopore channels, abundant structural micropores, and nitrogen functionalities, facilitating efficient CO<sub>2</sub> adsorption and desorption. Additionally, M<sub>0.1</sub> also displayed high hydrophobicity character, making it ideal for CO<sub>2</sub> adsorption under humid conditions. Moreover, the M<sub>x</sub> displayed remarkable stability and recyclability, positioning them as promising and environmentally friendly adsorbents for CO<sub>2</sub> capture and separation under practical operating conditions. Additionally, the proposed M<sub>x</sub> does not need any additional alkali activation before application, thus simplifying the implementation process, reducing costs, and complexity.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100302"},"PeriodicalIF":0.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142551549","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}
Pub Date : 2024-10-30DOI: 10.1016/j.ccst.2024.100326
Maxime H.J.-J. François , Vanja Buvik , Kai Vernstad , Hanna K. Knuutila
Amine-based carbon capture has proven to be a mature technology, but challenges remain. Emission control of potentially hazardous compounds is critical to ensure the long-term viability of the technology. The ability to predict which compounds to expect in gas emissions and at what levels is fundamental. This work aims to provide a qualitative and quantitative assessment of the volatility of both MEA and HS3 blend degradation products. VLE experiments were performed with different degraded solutions over a temperature range from 40 to 100 °C. Samples were analyzed using extensive LC-MS methods to quantify over 40 degradation compounds. Henry's constants were calculated to assess their volatility. The compiled results allow the ranking of most of the compounds studied in terms of volatility, and the quantification of their relative volatility compared to each other. Pyrazines and alkylamines are among the most volatile, followed by aldehydes, ketones, nitrosamines, and finally, larger amides. When compared, the volatilities of the degradation compounds are consistent from one degraded solution to another, highlighting the possibility of generalization from one solvent to another. This consistency is also observed with the dilute version of the degraded solutions simulating water-wash conditions. Finally, this work provides insight into the temperature dependence of the volatilities of the compounds studied. The methodology used provides a valuable and new type of data that have never been published before on the volatility of amine degradation compounds. The results can be used to better understand emissions and the design of emission control technologies.
胺基碳捕集已被证明是一项成熟的技术，但挑战依然存在。潜在危险化合物的排放控制对于确保该技术的长期可行性至关重要。预测气体排放中会出现哪些化合物以及其含量的能力至关重要。这项工作旨在对 MEA 和 HS3 混合降解产物的挥发性进行定性和定量评估。在 40 至 100 °C 的温度范围内，对不同的降解溶液进行了 VLE 实验。使用广泛的 LC-MS 方法对样品进行分析，以量化 40 多种降解化合物。通过计算亨利常数来评估它们的挥发性。根据汇总的结果，可以对所研究的大部分化合物的挥发性进行排序，并量化它们之间的相对挥发性。吡嗪和烷基胺的挥发性最强，其次是醛、酮、亚硝胺，最后是较大的酰胺。经过比较，不同降解溶液中降解化合物的挥发性是一致的，这说明从一种溶剂到另一种溶剂可以通用。在模拟水洗条件的稀释降解溶液中也观察到了这种一致性。最后，这项研究还深入探讨了所研究化合物的挥发性与温度的关系。所使用的方法提供了有关胺降解化合物挥发性的有价值的新型数据，这些数据以前从未发表过。研究结果可用于更好地了解排放和排放控制技术的设计。
{"title":"Assessment of the volatility of amine degradation compounds in aqueous MEA and blend of 1-(2HE)PRLD and 3A1P","authors":"Maxime H.J.-J. François , Vanja Buvik , Kai Vernstad , Hanna K. Knuutila","doi":"10.1016/j.ccst.2024.100326","DOIUrl":"10.1016/j.ccst.2024.100326","url":null,"abstract":"<div><div>Amine-based carbon capture has proven to be a mature technology, but challenges remain. Emission control of potentially hazardous compounds is critical to ensure the long-term viability of the technology. The ability to predict which compounds to expect in gas emissions and at what levels is fundamental. This work aims to provide a qualitative and quantitative assessment of the volatility of both MEA and HS3 blend degradation products. VLE experiments were performed with different degraded solutions over a temperature range from 40 to 100 °C. Samples were analyzed using extensive LC-MS methods to quantify over 40 degradation compounds. Henry's constants were calculated to assess their volatility. The compiled results allow the ranking of most of the compounds studied in terms of volatility, and the quantification of their relative volatility compared to each other. Pyrazines and alkylamines are among the most volatile, followed by aldehydes, ketones, nitrosamines, and finally, larger amides. When compared, the volatilities of the degradation compounds are consistent from one degraded solution to another, highlighting the possibility of generalization from one solvent to another. This consistency is also observed with the dilute version of the degraded solutions simulating water-wash conditions. Finally, this work provides insight into the temperature dependence of the volatilities of the compounds studied. The methodology used provides a valuable and new type of data that have never been published before on the volatility of amine degradation compounds. The results can be used to better understand emissions and the design of emission control technologies.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100326"},"PeriodicalIF":0.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142551547","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}
Pub Date : 2024-10-30DOI: 10.1016/j.ccst.2024.100319
Alex Durkin , Tom Vinestock , Miao Guo
Meeting the needs of a growing population calls for a change from linear production systems that exacerbate the depletion of finite natural resources and the emission of environmental pollutants. These linear production systems have resulted in the human-driven perturbation of the Earth’s natural biogeochemical cycles and the transgression of environmentally safe operating limits. One solution that can help alleviate the environmental issues associated both with resource stress and harmful emissions is resource recovery from waste. In this review, we address the recovery of resources from food and beverage processing wastewater (FPWW), which offers a synergistic solution to some of the environmental issues with traditional food production. Research on resource recovery from FPWW typically focuses on technologies to recover specific resources without considering integrative process systems to recover multiple resources while simultaneously satisfying regulations on final effluent quality. Process Systems Engineering (PSE) offers methodologies able to address this holistic process design problem, including modelling the trade-offs between competing objectives. Optimisation of FPWW treatment and resource recovery has significant scope to reduce the environmental impacts of food production systems. There is significant potential to recover carbon, nitrogen, and phosphorus resources while respecting effluent quality limits, even when the significant uncertainties inherent to wastewater systems are considered. This review article gives an overview of the environmental challenges we face, discussed within the framework of the planetary boundary, and highlights the impacts caused by the agri-food sector. This paper also presents a comprehensive review of the characteristics of FPWW and available technologies to recover carbon and nutrient resources from wastewater streams with a particular focus on bioprocesses. PSE research and modelling advances are discussed in this review. Based on this discussion, we conclude the article with future research directions.
要满足日益增长的人口需求，就必须改变加剧有限自然资源耗竭和环境污染排放的线性生产系统。这些线性生产系统导致地球的自然生物地球化学循环受到人为干扰，并突破了环境安全运行极限。从废弃物中回收资源是一个有助于缓解与资源紧张和有害排放相关的环境问题的解决方案。在本综述中，我们将讨论从食品和饮料加工废水（FPWW）中回收资源的问题，这为解决传统食品生产中的一些环境问题提供了一种协同解决方案。从食品饮料加工废水中回收资源的研究通常侧重于回收特定资源的技术，而没有考虑在满足最终出水水质要求的同时回收多种资源的综合工艺系统。工艺系统工程（PSE）提供了能够解决这一整体工艺设计问题的方法，包括对相互竞争的目标之间的权衡进行建模。FPWW 处理和资源回收的优化在减少食品生产系统对环境的影响方面具有重大意义。即使考虑到废水系统固有的重大不确定性，在遵守出水水质限值的同时回收碳、氮和磷资源的潜力也很大。这篇综述文章概述了我们所面临的环境挑战，在地球边界框架内进行了讨论，并强调了农业食品行业所造成的影响。本文还全面回顾了 FPWW 的特点以及从废水流中回收碳和养分资源的现有技术，尤其侧重于生物工艺。本综述还讨论了 PSE 研究和建模方面的进展。在讨论的基础上，我们以未来的研究方向作为文章的结尾。
{"title":"Towards planetary boundary sustainability of food processing wastewater, by resource recovery & emission reduction: A process system engineering perspective","authors":"Alex Durkin , Tom Vinestock , Miao Guo","doi":"10.1016/j.ccst.2024.100319","DOIUrl":"10.1016/j.ccst.2024.100319","url":null,"abstract":"<div><div>Meeting the needs of a growing population calls for a change from linear production systems that exacerbate the depletion of finite natural resources and the emission of environmental pollutants. These linear production systems have resulted in the human-driven perturbation of the Earth’s natural biogeochemical cycles and the transgression of environmentally safe operating limits. One solution that can help alleviate the environmental issues associated both with resource stress and harmful emissions is resource recovery from waste. In this review, we address the recovery of resources from food and beverage processing wastewater (FPWW), which offers a synergistic solution to some of the environmental issues with traditional food production. Research on resource recovery from FPWW typically focuses on technologies to recover specific resources without considering integrative process systems to recover multiple resources while simultaneously satisfying regulations on final effluent quality. Process Systems Engineering (PSE) offers methodologies able to address this holistic process design problem, including modelling the trade-offs between competing objectives. Optimisation of FPWW treatment and resource recovery has significant scope to reduce the environmental impacts of food production systems. There is significant potential to recover carbon, nitrogen, and phosphorus resources while respecting effluent quality limits, even when the significant uncertainties inherent to wastewater systems are considered. This review article gives an overview of the environmental challenges we face, discussed within the framework of the planetary boundary, and highlights the impacts caused by the agri-food sector. This paper also presents a comprehensive review of the characteristics of FPWW and available technologies to recover carbon and nutrient resources from wastewater streams with a particular focus on bioprocesses. PSE research and modelling advances are discussed in this review. Based on this discussion, we conclude the article with future research directions.</div></div>","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100319"},"PeriodicalIF":0.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142551540","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}
Pub Date : 2024-10-30DOI: 10.1016/j.ccst.2024.100320
Sergio Dorado-Alfaro , Daniel Hospital-Benito , Cristian Moya , Pablo Navarro , Jesús Lemus , José Palomar
<div><div>The development of efficient and cost-effective carbon capture (CC) technologies is becoming a crucial challenge for short-term industrial decarbonization strategies and energy transition goals centred on biomethane and biohydrogen production. Nowadays, available CC technologies present main shortcomings for being applied to the huge wide range of CO<sub>2</sub> partial pressure involved in currently-of-interest industrial CC scenarios (from 0.0004 bar in direct air capture to 13 bar in pre-combustion system: it means five orders of magnitude). Aprotic N-heterocyclic anion-based ionic liquids (AHA-ILs) arise as highly versatile CO<sub>2</sub> chemical absorbents able to deal with this challenge. In this work, the process thermodynamic limits of the CC based on AHA-IL is explored by estimating the thermodynamic CO<sub>2</sub> absorption cyclic capacity (<span><math><msub><mi>z</mi><mrow><mi>c</mi><mi>y</mi><mi>c</mi><mi>l</mi><mi>i</mi><mi>c</mi></mrow></msub></math></span>) for four relevant CC industrial systems [inlet CO<sub>2</sub> partial pressure typical of direct air capture (DAC), post-combustion (post-comb), biogas upgrading (biogas) and pre-combustion (pre-comb)], by means of sensitivity analysis in the literature reported range of key material properties (reaction enthalpy, <span><math><mrow><mstyle><mi>Δ</mi></mstyle><msub><mi>H</mi><mi>R</mi></msub></mrow></math></span>: [−15, −100 kJ/mol]; reaction entropy, <span><math><mrow><mstyle><mi>Δ</mi></mstyle><msub><mi>S</mi><mi>R</mi></msub></mrow></math></span>: [−0.05, −0.16 kJ/mol⋅K]; Henry constant, <span><math><msub><mi>K</mi><mi>H</mi></msub></math></span>: [20, 115 bar]) and process operating conditions (absorption temperature, <span><math><msup><mrow><mi>T</mi></mrow><mrow><mi>a</mi><mi>b</mi><mi>s</mi></mrow></msup></math></span>: [20, 100 °C]; regeneration temperature, <span><math><msup><mrow><mi>T</mi></mrow><mrow><mi>r</mi><mi>e</mi><mi>g</mi></mrow></msup></math></span>: [20, 100 °C]; regeneration pressure, <span><math><msubsup><mi>P</mi><mrow><mi>C</mi><mi>O</mi><mn>2</mn></mrow><mrow><mi>r</mi><mi>e</mi><mi>g</mi></mrow></msubsup></math></span>: [0.01, 0.5 bar]). It is obtained that <span><math><msub><mi>z</mi><mrow><mi>c</mi><mi>y</mi><mi>c</mi><mi>l</mi><mi>i</mi><mi>c</mi></mrow></msub></math></span> can be significantly increased by designing AHA-ILs with more negative <span><math><mrow><mstyle><mi>Δ</mi></mstyle><msub><mi>H</mi><mi>R</mi></msub></mrow></math></span> and <span><math><mrow><mstyle><mi>Δ</mi></mstyle><msub><mi>S</mi><mi>R</mi></msub></mrow></math></span> values, since reaction exothermicity enhances the absorption stage, whereas unfavourable reaction entropy promotes absorbent regeneration. Physical absorption contribution described by <span><math><msub><mi>K</mi><mi>H</mi></msub></math></span> plays a minor role in post-comb and biogas CC systems and becomes highly relevant for pre-comb conditions; surprisingly, DAC process can be enhanced by dec
对于以生物甲烷和生物氢生产为核心的短期工业脱碳战略和能源转型目标而言，开发高效且具有成本效益的碳捕集（CC）技术正成为一项重要挑战。目前，现有的碳捕集（CC）技术在应用于目前感兴趣的工业碳捕集（CC）方案所涉及的巨大二氧化碳分压范围（从直接空气捕集的 0.0004 巴到预燃烧系统的 13 巴：这意味着五个数量级）方面存在主要缺陷。Aprotic N-heterocyclic 阴离子基离子液体（AHA-ILs）作为高度通用的二氧化碳化学吸收剂，能够应对这一挑战。在这项工作中，通过对文献报道的关键材料属性范围（反应焓，ΔHR.[-15, -100 kJ]）进行敏感性分析，估算了四种相关 CC 工业系统[典型的直接空气捕集（DAC）、燃烧后（post-comb）、沼气升级（biogas）和燃烧前（pre-comb）的入口二氧化碳分压]的热力学二氧化碳吸收循环能力（zcyclic），从而探索了基于 AHA-IL 的 CC 的工艺热力学极限：[-15，-100 kJ/mol]；反应熵，ΔSR：[-0.05，-0.16 kJ/mol-K]；亨利常数，KH：[20，115 bar]）和工艺操作条件（吸收温度，Tabs：[20，100 °C]; 再生温度，Treg：[20，100 °C]; 再生压力，PCO2reg：[0.01，0.5 bar]）。结果表明，通过设计具有更多负值 ΔHR 和 ΔSR 的 AHA-IL 可以显著提高 zcyclic 值，因为反应放热会增强吸收阶段，而不利的反应熵则会促进吸收剂的再生。KH 所描述的物理吸收作用在后化学反应和沼气 CC 系统中作用较小，而在前化学反应条件下则变得非常重要；令人惊讶的是，DAC 过程可以通过降低材料的 KH 值来增强。至于工艺操作条件的影响，通过降低 Tabs 和 PCO2reg 以及增加 Treg 可以提高 CC 循环能力，但不同 CC 方案的影响明显不同：在预混合系统中，z 循环几乎不受影响，而在 DAC 中，工艺条件是获得正 z 循环值的决定因素。最后，对现有文献中的ΔHR、ΔSR 和 KH 的批判性分析表明，通过微调阳离子和阴离子结构来设计 AHA-IL 材料，非常适合于开发具有更佳 CC 工艺性能的创新技术，尤其适用于更具挑战性的 DAC 和稀释碳源捕获。
{"title":"Exploiting process thermodynamics in carbon capture from direct air to industrial sources: The paradigmatic case of ionic liquids","authors":"Sergio Dorado-Alfaro , Daniel Hospital-Benito , Cristian Moya , Pablo Navarro , Jesús Lemus , José Palomar","doi":"10.1016/j.ccst.2024.100320","DOIUrl":"10.1016/j.ccst.2024.100320","url":null,"abstract":"<div><div>The development of efficient and cost-effective carbon capture (CC) technologies is becoming a crucial challenge for short-term industrial decarbonization strategies and energy transition goals centred on biomethane and biohydrogen production. Nowadays, available CC technologies present main shortcomings for being applied to the huge wide range of CO<sub>2</sub> partial pressure involved in currently-of-interest industrial CC scenarios (from 0.0004 bar in direct air capture to 13 bar in pre-combustion system: it means five orders of magnitude). Aprotic N-heterocyclic anion-based ionic liquids (AHA-ILs) arise as highly versatile CO<sub>2</sub> chemical absorbents able to deal with this challenge. In this work, the process thermodynamic limits of the CC based on AHA-IL is explored by estimating the thermodynamic CO<sub>2</sub> absorption cyclic capacity (<span><math><msub><mi>z</mi><mrow><mi>c</mi><mi>y</mi><mi>c</mi><mi>l</mi><mi>i</mi><mi>c</mi></mrow></msub></math></span>) for four relevant CC industrial systems [inlet CO<sub>2</sub> partial pressure typical of direct air capture (DAC), post-combustion (post-comb), biogas upgrading (biogas) and pre-combustion (pre-comb)], by means of sensitivity analysis in the literature reported range of key material properties (reaction enthalpy, <span><math><mrow><mstyle><mi>Δ</mi></mstyle><msub><mi>H</mi><mi>R</mi></msub></mrow></math></span>: [−15, −100 kJ/mol]; reaction entropy, <span><math><mrow><mstyle><mi>Δ</mi></mstyle><msub><mi>S</mi><mi>R</mi></msub></mrow></math></span>: [−0.05, −0.16 kJ/mol⋅K]; Henry constant, <span><math><msub><mi>K</mi><mi>H</mi></msub></math></span>: [20, 115 bar]) and process operating conditions (absorption temperature, <span><math><msup><mrow><mi>T</mi></mrow><mrow><mi>a</mi><mi>b</mi><mi>s</mi></mrow></msup></math></span>: [20, 100 °C]; regeneration temperature, <span><math><msup><mrow><mi>T</mi></mrow><mrow><mi>r</mi><mi>e</mi><mi>g</mi></mrow></msup></math></span>: [20, 100 °C]; regeneration pressure, <span><math><msubsup><mi>P</mi><mrow><mi>C</mi><mi>O</mi><mn>2</mn></mrow><mrow><mi>r</mi><mi>e</mi><mi>g</mi></mrow></msubsup></math></span>: [0.01, 0.5 bar]). It is obtained that <span><math><msub><mi>z</mi><mrow><mi>c</mi><mi>y</mi><mi>c</mi><mi>l</mi><mi>i</mi><mi>c</mi></mrow></msub></math></span> can be significantly increased by designing AHA-ILs with more negative <span><math><mrow><mstyle><mi>Δ</mi></mstyle><msub><mi>H</mi><mi>R</mi></msub></mrow></math></span> and <span><math><mrow><mstyle><mi>Δ</mi></mstyle><msub><mi>S</mi><mi>R</mi></msub></mrow></math></span> values, since reaction exothermicity enhances the absorption stage, whereas unfavourable reaction entropy promotes absorbent regeneration. Physical absorption contribution described by <span><math><msub><mi>K</mi><mi>H</mi></msub></math></span> plays a minor role in post-comb and biogas CC systems and becomes highly relevant for pre-comb conditions; surprisingly, DAC process can be enhanced by dec","PeriodicalId":9387,"journal":{"name":"Carbon Capture Science & Technology","volume":"13 ","pages":"Article 100320"},"PeriodicalIF":0.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142551548","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}
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