1
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Kumar N, Premadasa UI, Dong D, Roy S, Ma YZ, Doughty B, Bryantsev VS. Adsorption, Orientation, and Speciation of Amino Acids at Air-Aqueous Interfaces for the Direct Air Capture of CO 2. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:14311-14320. [PMID: 38958522 DOI: 10.1021/acs.langmuir.4c00907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Amino acids make up a promising family of molecules capable of direct air capture (DAC) of CO2 from the atmosphere. Under alkaline conditions, CO2 reacts with the anionic form of an amino acid to produce carbamates and deactivated zwitterionic amino acids. The presence of the various species of amino acids and reactive intermediates can have a significant effect on DAC chemistry, the role of which is poorly understood. In this study, all-atom molecular dynamics (MD) based computational simulations and vibrational sum frequency generation (vSFG) spectroscopy studies were conducted to understand the role of competitive interactions at the air-aqueous interface in the context of DAC. We find that the presence of potassium bicarbonate ions, in combination with the anionic and zwitterionic forms of amino acids, induces concentration and charge gradients at the interface, generating a layered molecular arrangement that changes under pre- and post-DAC conditions. In parallel, an enhancement in the surface activity of both anionic and zwitterionic forms of amino acids is observed, which is attributed to enhanced interfacial stability and favorable intermolecular interactions between the adsorbed amino acids in their anionic and zwitterionic forms. The collective influence of these competitive interactions, along with the resulting interfacial heterogeneity, may in turn affect subsequent capture reactions and associated rates. These effects underscore the need to consider dynamic changes in interfacial chemical makeup to enhance DAC efficiency and to develop successful negative emission and storage technologies.
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Affiliation(s)
- Nitesh Kumar
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Uvinduni I Premadasa
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Dengpan Dong
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Santanu Roy
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Ying-Zhong Ma
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Benjamin Doughty
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Vyacheslav S Bryantsev
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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2
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Wen S, Zhang X, Wu Y. Efficient Absorption of CO 2 by Protic-Ionic-Liquid Based Deep Eutectic Solvents. Chem Asian J 2024:e202400234. [PMID: 38567977 DOI: 10.1002/asia.202400234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 03/31/2024] [Indexed: 04/29/2024]
Abstract
Carbon capture, utilization, and storage (CCUS) are among the key technologies to achieve large-scale carbon emission reduction globally. Deep eutectic solvents (DESs) are considered as designable solvents, which has attracted intensive attention for CO2 capture. Here, a series of binary DESs are synthesized through one-step mixing with the starting materials of protic ionic liquid (PIL) and amine. The eutectic behavior was investigated by measuring the melting point of PILs and amine. The saturated vapor of these DESs and industrial MDEA solution were measured and compared. These DESs are investigated to have high absorption capacity (0.1 g ⋅ g-1 at 1.0 bar and 25 °C), superior apparent absorption rate constant (0.381 min-1 vs 0.012 min-1 of 70 wt.% MDEA), moderate interaction with CO2 (the enthalpy change is as low as -34.8 kJ ⋅ mol-1). The absorption mechanism is also investigated by NMR analysis. Eight absorption/desorption regeneration experiments are carried out to show their reversibility. Considering the advantages, including convenience of synthesis, large absorption capacity, fast absorption rate, and moderate interaction energy as well as good regeneration, these DESs are believed to be as potential CO2 absorbent in practical applications.
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Affiliation(s)
- Shuyue Wen
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Xiaomin Zhang
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
- The Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Suzhou, Jiangsu, 215163, China
| | - Youting Wu
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
- The Institute of Green Chemistry and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Suzhou, Jiangsu, 215163, China
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3
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Mantovani S, Pintus A, Kovtun A, Gondolini A, Casadio S, Sanson A, Marforio TD, Calvaresi M, Rancan M, Armelao L, Bertuzzi G, Melucci M, Bandini M. Graphene Oxide-Arginine Composites: Efficient Dual Function Materials for Integrated CO 2 Capture and Conversion. CHEMSUSCHEM 2024; 17:e202301673. [PMID: 38227427 DOI: 10.1002/cssc.202301673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/24/2023] [Accepted: 01/16/2024] [Indexed: 01/17/2024]
Abstract
The "on-demand" capture and utilization of CO2 is effectively realized with a readily accessible dual function organic composite. The covalent and controlled derivatization of graphene oxide (GO) surface with naturally occurring arginine led to a "smart" material capable of capturing (chemisorption) CO2 from high-purity flue-gas as well as low-concentration streams (i. e. direct air capture) and concomitant chemical activation toward the incorporation into cyclic carbonates. The overall integrated CO2 capture and conversion (ICCC) strategy has been fully elucidated mechanistically via dedicated computational, spectroscopic and thermal analyses.
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Affiliation(s)
- Sebastiano Mantovani
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, via P. Gobetti 85, 40129, Bologna, Italy
- The Institute for Organic Synthesis and Photoreactivity (ISOF), National Research Council (CNR), via P. Gobetti 101, 40129, Bologna, Italy
| | - Angela Pintus
- The Institute for Organic Synthesis and Photoreactivity (ISOF), National Research Council (CNR), via P. Gobetti 101, 40129, Bologna, Italy
| | - Alessandro Kovtun
- The Institute for Organic Synthesis and Photoreactivity (ISOF), National Research Council (CNR), via P. Gobetti 101, 40129, Bologna, Italy
| | - Angela Gondolini
- Institute of Science, Technology and Sustainability for Ceramics (ISSMC, former ISTEC), National Research Council (CNR), via Granarolo, 64, 48018, Faenza, RA, Italy
| | - Simone Casadio
- Institute of Science, Technology and Sustainability for Ceramics (ISSMC, former ISTEC), National Research Council (CNR), via Granarolo, 64, 48018, Faenza, RA, Italy
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
| | - Alessandra Sanson
- Institute of Science, Technology and Sustainability for Ceramics (ISSMC, former ISTEC), National Research Council (CNR), via Granarolo, 64, 48018, Faenza, RA, Italy
| | - Tainah D Marforio
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, via P. Gobetti 85, 40129, Bologna, Italy
- Center for Chemical Catalysis - C3, Alma Mater Studiorum - Università di Bologna, via R. Gobetti 85, 40129, Bologna, Italy
| | - Matteo Calvaresi
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, via P. Gobetti 85, 40129, Bologna, Italy
- Center for Chemical Catalysis - C3, Alma Mater Studiorum - Università di Bologna, via R. Gobetti 85, 40129, Bologna, Italy
| | - Marzio Rancan
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (CNR), c/o Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
| | - Lidia Armelao
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
- Department of Chemical Sciences and Materials Technologies (DSCTM), National Research Council (CNR), Piazzale Moro 7, 00185, Roma, Italy
| | - Giulio Bertuzzi
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, via P. Gobetti 85, 40129, Bologna, Italy
- Center for Chemical Catalysis - C3, Alma Mater Studiorum - Università di Bologna, via R. Gobetti 85, 40129, Bologna, Italy
| | - Manuela Melucci
- The Institute for Organic Synthesis and Photoreactivity (ISOF), National Research Council (CNR), via P. Gobetti 101, 40129, Bologna, Italy
| | - Marco Bandini
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum - Università di Bologna, via P. Gobetti 85, 40129, Bologna, Italy
- Center for Chemical Catalysis - C3, Alma Mater Studiorum - Università di Bologna, via R. Gobetti 85, 40129, Bologna, Italy
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4
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Premadasa UI, Kumar N, Zhu Z, Stamberga D, Li T, Roy S, Carrillo JMY, Einkauf JD, Custelcean R, Ma YZ, Bocharova V, Bryantsev VS, Doughty B. Synergistic Assembly of Charged Oligomers and Amino Acids at the Air-Water Interface: An Avenue toward Surface-Directed CO 2 Capture. ACS APPLIED MATERIALS & INTERFACES 2024; 16:12052-12061. [PMID: 38411063 DOI: 10.1021/acsami.3c18225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Interfaces are considered a major bottleneck in the capture of CO2 from air. Efforts to design surfaces to enhance CO2 capture probabilities are challenging due to the remarkably poor understanding of chemistry and self-assembly taking place at these interfaces. Here, we leverage surface-specific vibrational spectroscopy, Langmuir trough techniques, and simulations to mechanistically elucidate how cationic oligomers can drive surface localization of amino acids (AAs) that serve as CO2 capture agents speeding up the apparent rate of absorption. We demonstrate how tuning these interfaces provides a means to facilitate CO2 capture chemistry to occur at the interface, while lowering surface tension and improving transport/reaction probabilities. We show that in the presence of interfacial AA-rich aggregates, one can improve capture probabilities vs that of a bare interface, which holds promise in addressing climate change through the removal of CO2 via tailored interfaces and associated chemistries.
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Affiliation(s)
- Uvinduni I Premadasa
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Nitesh Kumar
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Zewen Zhu
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Diana Stamberga
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Tianyu Li
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Santanu Roy
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Jan-Michael Y Carrillo
- Center for Nanophase Materials Science, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Jeffrey D Einkauf
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Radu Custelcean
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Ying-Zhong Ma
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Vera Bocharova
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Vyacheslav S Bryantsev
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Benjamin Doughty
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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5
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Evaluation of the rapid phase change absorbents based on potassium glycinate for CO2 capture. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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6
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Lim H, Kim K, Sic Park H, Hong Kang J, Park J, Song H. Carbon Dioxide Capture in Aqueous Potassium Serinate and Piperazine Solution Using Bubbling Reactor for Membrane Contactor Applications. J IND ENG CHEM 2023. [DOI: 10.1016/j.jiec.2023.02.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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7
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Determination of the Regeneration Energy of Direct Air Capture Solvents/Sorbents Using Calorimetric Methods. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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8
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Siegel RE, Pattanayak S, Berben LA. Reactive Capture of CO 2: Opportunities and Challenges. ACS Catal 2022. [DOI: 10.1021/acscatal.2c05019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Rachel E. Siegel
- Department of Chemistry, The University of California, 1 Shields Avenue, Davis, California 95161, United States
| | - Santanu Pattanayak
- Department of Chemistry, The University of California, 1 Shields Avenue, Davis, California 95161, United States
| | - Louise A. Berben
- Department of Chemistry, The University of California, 1 Shields Avenue, Davis, California 95161, United States
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9
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de Meyer F, Jouenne S. Industrial carbon capture by absorption: recent advances and path forward. Curr Opin Chem Eng 2022. [DOI: 10.1016/j.coche.2022.100868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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10
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Recent Advances in Biomass Based Activated Carbon for Carbon Dioxide Capture - A Review. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.08.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Srivastava S, Kollemparembil AM, Zettel V, Claßen T, Gatternig B, Delgado A, Hitzmann B. Experimental investigation of CO 2 uptake in CO 2 hydrates formation with amino acids as kinetic promoters and its dissociation at high temperature. Sci Rep 2022; 12:8359. [PMID: 35590025 PMCID: PMC9120522 DOI: 10.1038/s41598-022-12538-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 05/06/2022] [Indexed: 11/10/2022] Open
Abstract
The dissociation of CO2 gas hydrates (GH) with amino acid kinetic promoters and without promoters was studied at a high temperature of 90 °C for a period of 20 min to understand the percentage of CO2 gas and to select the best promoter that aids CO2 gas entrapment along with stability at a high temperature. The possibility of using four hydrophobic food grade amino acids, namely cysteine, valine, leucine, and methionine, and one surfactant, lecithin, as kinetic promoters for CO2 GH has been studied. The amino acids were added 0.5 g (wt%), and lecithin was added 5 g for the GH production. Furthermore, the amino acids leucine and methionine gave some positive results, therefore, these amino acids were carried further for the experimentation purpose in the production of CO2 GH. Also, a combinational use of these amino acids was studied to investigate the effect on % CO2 retention in comparison to the normal GH. From the results, it was observed that the stability of GH decreases with an increase in temperature, but the addition of promoters, especially leucine + methionine + lecithin increased the CO2 uptake during GH formation.
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Affiliation(s)
- Shubhangi Srivastava
- Department of Process Analytics and Cereal Science, University of Hohenheim, 70599, Stuttgart, Germany.
| | - Ann Mary Kollemparembil
- Department of Process Analytics and Cereal Science, University of Hohenheim, 70599, Stuttgart, Germany
| | - Viktoria Zettel
- Department of Process Analytics and Cereal Science, University of Hohenheim, 70599, Stuttgart, Germany
| | - Timo Claßen
- Department of Process Analytics and Cereal Science, University of Hohenheim, 70599, Stuttgart, Germany
| | - Bernhard Gatternig
- Institute of Fluid Mechanics (LSTME), FAU Erlangen-Nuremberg, Erlangen, Germany.,Process Engineering and Circular Economy, University of Applied Sciences Weihenstephan-Triesdorf, Triesdorf, Germany.,German Engineering Research and Development Center LSTME Busan, Busan, Republic of Korea
| | - Antonio Delgado
- Institute of Fluid Mechanics (LSTME), FAU Erlangen-Nuremberg, Erlangen, Germany.,German Engineering Research and Development Center LSTME Busan, Busan, Republic of Korea
| | - Bernd Hitzmann
- Department of Process Analytics and Cereal Science, University of Hohenheim, 70599, Stuttgart, Germany
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12
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Abstract
The rise of carbon dioxide (CO2) levels in the atmosphere emphasises the need for improving the current carbon capture and storage (CCS) technology. A conventional absorption method that utilises amine-based solvent is known to cause corrosion to process equipment. The solvent is easily degraded and has high energy requirement for regeneration. Amino acids are suitable candidates to replace traditional alkanolamines attributed to their identical amino functional group. In addition, amino acid salt is a green material due to its extremely low toxicity, low volatility, less corrosive, and high efficiency to capture CO2. Previous studies have shown promising results in CO2 capture using amino acids salts solutions and amino acid ionic liquids. Currently, amino acid solvents are also utilised to enhance the adsorption capacity of solid sorbents. This systematic review is the first to summarise the currently available amino acid-based adsorbents for CO2 capture using PRISMA method. Physical and chemical properties of the adsorbents that contribute to effective CO2 capture are thoroughly discussed. A total of four categories of amino acid-based adsorbents are evaluated for their CO2 adsorption capacities. The regeneration studies are briefly discussed and several limitations associated with amino acid-based adsorbents for CO2 capture are presented before the conclusion.
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13
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Lyu H, Chen OIF, Hanikel N, Hossain MI, Flaig RW, Pei X, Amin A, Doherty MD, Impastato RK, Glover TG, Moore DR, Yaghi OM. Carbon Dioxide Capture Chemistry of Amino Acid Functionalized Metal-Organic Frameworks in Humid Flue Gas. J Am Chem Soc 2022; 144:2387-2396. [PMID: 35080872 DOI: 10.1021/jacs.1c13368] [Citation(s) in RCA: 65] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Metal-organic framework-808 has been functionalized with 11 amino acids (AA) to produce a series of MOF-808-AA structures. The adsorption of CO2 under flue gas conditions revealed that glycine- and dl-lysine-functionalized MOF-808 (MOF-808-Gly and -dl-Lys) have the highest uptake capacities. Enhanced CO2 capture performance in the presence of water was observed and studied by using single-component sorption isotherms, CO2/H2O binary isotherm, and dynamic breakthrough measurements. The key to the favorable performance was uncovered by deciphering the mechanism of CO2 capture in the pores and attributed to the formation of bicarbonate as evidenced by 13C and 15N solid-state nuclear magnetic resonance spectroscopy studies. On the basis of these results, we examined the performance of MOF-808-Gly in simulated coal flue gas conditions and found that it is possible to capture and release CO2 by vacuum swing adsorption. MOF-808-Gly was cycled at least 80 times with full retention of performance. This study significantly advances our understanding of CO2 chemistry in MOFs by revealing how strongly bound amine moieties to the MOF backbone create the chemistry and environment within the pores, leading to the binding and release of CO2 under mild conditions without application of heat.
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Affiliation(s)
- Hao Lyu
- Department of Chemistry and Kavli Energy Nanoscience Institute, University of California, Berkeley, Berkeley, California 94720, United States
| | - Oscar Iu-Fan Chen
- Department of Chemistry and Kavli Energy Nanoscience Institute, University of California, Berkeley, Berkeley, California 94720, United States
| | - Nikita Hanikel
- Department of Chemistry and Kavli Energy Nanoscience Institute, University of California, Berkeley, Berkeley, California 94720, United States
| | - Mohammad I Hossain
- Department of Chemical & Biomolecular Engineering, University of South Alabama, Mobile, Alabama 36688, United States
| | - Robinson W Flaig
- Department of Chemistry and Kavli Energy Nanoscience Institute, University of California, Berkeley, Berkeley, California 94720, United States
| | - Xiaokun Pei
- Department of Chemistry and Kavli Energy Nanoscience Institute, University of California, Berkeley, Berkeley, California 94720, United States
| | - Ameer Amin
- Department of Chemistry and Kavli Energy Nanoscience Institute, University of California, Berkeley, Berkeley, California 94720, United States
| | - Mark D Doherty
- GE Global Research, 1 Research Circle, Niskayuna, New York 12309, United States
| | - Rebekah K Impastato
- Department of Chemical & Biomolecular Engineering, University of South Alabama, Mobile, Alabama 36688, United States
| | - T Grant Glover
- Department of Chemical & Biomolecular Engineering, University of South Alabama, Mobile, Alabama 36688, United States
| | - David R Moore
- GE Global Research, 1 Research Circle, Niskayuna, New York 12309, United States
| | - Omar M Yaghi
- Department of Chemistry and Kavli Energy Nanoscience Institute, University of California, Berkeley, Berkeley, California 94720, United States
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15
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Bao Z, Li Q, Akhmedov NG, Li BA, Xing M, Wang J, Morsi BI, Li B. Innovative cycling reaction mechanisms of CO2 absorption in amino acid salt solvents. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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16
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Abstract
Acid gas removal from gaseous streams such as flue gas, natural gas and biogas is mainly performed by chemical absorption with amines, but the process is highly energy intensive and can generate emissions of harmful compounds to the atmosphere. Considering the emerging interest in carbon capture, mainly associated with increasing environmental concerns, there is much current effort to develop innovative solvents able to lower the energy and environmental impact of the acid gas removal processes. To be competitive, the new blends must show a CO2 uptake capacity comparable to the one of the traditional MEA benchmark solution. In this work, a review of the state of the art of attractive solvents alternative to the traditional MEA amine blend for acid gas removal is presented. These novel solvents are classified into three main classes: biphasic blends—involving the formation of two liquid phases, water-lean solvents and green solvents. For each solvent, the peculiar features, the level of technological development and the main expected pros and cons are discussed. At the end, a summary on the most promising perspectives and on the major limitations is provided.
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17
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Affiliation(s)
- Cameron Halliday
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - T. Alan Hatton
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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18
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Dashti A, Amirkhani F, Hamedi AS, Mohammadi AH. Evaluation of CO 2 Absorption by Amino Acid Salt Aqueous Solution Using Hybrid Soft Computing Methods. ACS OMEGA 2021; 6:12459-12469. [PMID: 34056396 PMCID: PMC8154155 DOI: 10.1021/acsomega.0c06158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 04/02/2021] [Indexed: 06/12/2023]
Abstract
Amino acid salt (AAs) aqueous solutions have recently exhibited a great potential in CO2 absorption from various gas mixtures. In this work, four hybrid machine learning methods were developed to evaluate 626 CO2 and AAs equilibrium data for different aqueous solutions of AAs (potassium sarcosinate, potassium l-asparaginate, potassium l-glutaminate, sodium l-phenylalanine, sodium glycinate, and potassium lysinate) gathered from reliable references. The models are the hybrids of the least squares support vector machine and coupled simulated annealing optimization algorithm, radial basis function neural network (RBF-NN), particle swarm optimization-adaptive neuro-fuzzy inference system, and hybrid adaptive neuro-fuzzy inference system. The inputs of the models are the CO2 partial pressure, temperature, mass concentration in the aqueous solution, molecular weight of AAs, hydrogen bond donor count, hydrogen bond acceptor count, rotatable bond count, heavy atom count, and complexity, and the CO2 loading capacity of AAs aqueous solution is considered as the output of the models. The accuracies of the models' results were verified through graphical and statistical analyses. RBF-NN performance is promising and surpassed that of other models in estimating the CO2 loading capacities of AAs aqueous solutions.
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Affiliation(s)
- Amir Dashti
- Department
of Chemical Engineering, Faculty of Engineering, University of Kashan, Kashan 8731753153, Iran
| | - Farid Amirkhani
- Department
of Chemical Engineering, Faculty of Engineering, University of Kashan, Kashan 8731753153, Iran
| | - Amir-Sina Hamedi
- Department
of Chemical Engineering, Brigham Young University, Provo, Utah 84602, United States
| | - Amir H. Mohammadi
- Discipline
of Chemical Engineering, School of Engineering, University of KwaZulu-Natal, Howard College Campus, King George V Avenue, Durban 4041, South Africa
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