Article
Engineering, Chemical
Antonio Conversano, Serena Delgado, Christophe Coquelet, Stefano Consonni, Manuele Gatti
Summary: This study develops a model for the solubility of CO2 in aqueous solutions of potassium lysinate using a Kent-Eisenberg-like approach. The model is calibrated with experimental data and incorporates Debye-Huckel activity coefficients. The developed Deshmukh-Mather model shows good predictive performance and is validated against additional experimental data.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Yanjie Xu, Tao Wang, Qi Yang, Hai Yu, Mengxiang Fang, Graeme Puxty
Summary: A range of water-lean solutions blended from diamines, organic solvent diluents, and water were examined to reduce energy penalties. Some diamines were found to remain homogenous during CO2 uptake, showing low viscosity and rapid absorption and desorption rates.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Eric D. Walter, Difan Zhang, Ying Chen, Kee Sung Han, J. David Bazak, Sarah Burton, Kathryn O'Harra, David W. Hoyt, Jason E. Bara, Deepika Malhotra, Sarah I. Allec, Vassiliki-Alexandra Glezakou, David J. Heldebrant, Roger Rousseau
Summary: Efficient direct air capture (DAC) of CO2 can be achieved by using a combination of a CO2-selective membrane and a CO2 capture solvent. The interaction between a water-lean carbon-capture solvent, a PEEK-ionene membrane, and CO2 was studied using advanced NMR techniques and simulations. It was found that the solvent provides a thermodynamic and kinetic pathway for CO2 to be drawn through the membrane, enhancing its performance. The reaction between the solvent and CO2 also creates structural changes that facilitate faster CO2 diffusion at the interface.
Article
Green & Sustainable Science & Technology
Jak Tanthana, Paul Mobley, Aravind Rayer, Vijay Gupta, Mustapha Soukri, Marty Lail
Summary: This work focuses on demonstrating the energetic performance and operational reliability in a continuous system of RTI's water-lean solvents for post-combustion CO2 capture applications. NAS-1A shows stable operation with 90% CO2 capture efficiency and 15% lower energy input for regeneration compared to MEA, while NAS-1B exhibits even higher efficiency with 25% less energy input for 90% CO2 capture.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Chemistry, Physical
E. Olyaei, A. Hafizi, M. R. Rahimpour
Summary: A new water lean amino acid-based solvent has been developed to reduce the energy required for CO2 absorption and improve absorption efficiency. By adding different co-solvents, the absorption capacity of KGly can be enhanced.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Chemical
Yongda Cao, Chenglong Yang, Chao Wang, Changan Zhou, Lei Song, Kui Ma, Houfang Lu, Hairong Yue
Summary: A novel rapid phase change absorbent composed of ether solvent (SA) and potassium glycinate (GlyK) aqueous solution was developed, which exhibited high CO2 capacity, fast liquid-liquid phase separation, and low energy consumption. The absorbent also showed excellent cycling stability and a 30% reduction in energy consumption compared to the 3 M MEA system.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Engineering, Chemical
Qingyang Li, Zhenghong Bao, Novruz G. Akhmedov, Benjamin A. Li, Yuhua Duan, Malcolm Xing, Jingxin Wang, Badie Morsi, Bingyun Li
Summary: The study reveals that the addition of amino acids like glycine in potassium carbonate solvents can lead to carbamate formation, and amino acids significantly enhance the absorption rate of CO2. The mixed solvent of potassium carbonate and amino acids may be an ideal choice for CO2 removal.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Hiroi Sei, Yu Nagai Kanasaki, Kouki Oka, Norimitsu Tohnai, Yuki Kohno, Takashi Makino
Summary: Amino acid ionic liquids (AAILs) are considered as environmentally friendly alternatives to current CO2-sorptive materials due to the availability of amino acids from renewable sources. The stability of AAILs, especially towards O(2), is crucial for their wide applications including direct air capture. This study investigates the accelerated oxidative degradation of tetra-n-butylphosphonium l-prolinate ([P-4444]-[Pro]), a commonly studied AAIL, and demonstrates the fabrication of supported IL membranes composed of degraded [P-4444]-[Pro] that retain CO2 permeability and CO2/N-2 selectivity values.
Article
Engineering, Chemical
Jiangsheng Liu, Juan Qian, Yan He
Summary: The presence of a small amount of water was found to have a significant effect on the absorption performance of amine/alcohol absorbents. This study investigated the absorption behavior of different polyamines in aqueous and n-propanol solutions and discussed the influence of amine concentration and water content on the absorption-desorption loading and CO2 cycle capacity. The phase separation and species migration mechanisms were explored from the perspective of molecular structure. The findings provide valuable insights for the understanding and optimization of amine/alcohol absorbents.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Vida Sang Sefidi, Ines Winand, Patricia Luis
Summary: This study proposes the use of a membrane contactor and an aqueous alkaline solution containing multiple amino acids as the absorption liquid for carbon capture. Results show that arginine is the best choice, with a high mass transfer coefficient and remarkable CO2 absorption capacity without the need for alkaline component. The use of membrane contactors with a green solvent is promising and requires further investigation.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Engineering, Chemical
Wanxiang Zhang, Zhaoyuan Ma, Xingyi Liu, Yigang Liu, Zhengkun Hou, Jianguang Qi, Yixin Ma, Lei Wang, Yinglong Wang
Summary: In this study, the absorption performance of CO2 in deep eutectic solvents (DESs) was investigated using molecular dynamics simulation and process simulation. Key factors such as absorption mechanism and regeneration ability were discussed, and it was recommended to use 10% DES in industrial applications. The effects of temperature and water on the viscosity and absorption capacity of DES were studied, with the conclusion that increasing system temperature has a more positive effect on ChCl/monoethanolamine (MEA) viscosity than adding water. Additionally, the CO2 removal process of MEA-based DESs was modeled and simulated, showing a high CO2 capture rate and purity in the product gas.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Tengku Nur Adibah Tengku Hassan, Azmi Mohd Shariff, Nor Faiqa Abd Aziz, Nur Farhana Ajua Mustafa, Lian See Tan, Hairul Nazirah Abdul Halim, Mustakimah Mohamed, Heri Hermansyah
Summary: The physicochemical and CO2-solubility properties of potassium L-cysteine (K-CYS), a natural amino-acid-based solvent, for CO2 removal from natural gas were evaluated. The results showed that the density, viscosity, and refractive index of K-CYS decreased with increasing temperature and increased with increasing concentration. The experiments also demonstrated a significant reduction of CO2 loading with increasing solvent concentration.
Article
Chemistry, Multidisciplinary
Jotheeswari Kothandaraman, Johnny Saavedra Lopez, Yuan Jiang, Eric D. Walter, Sarah D. Burton, Robert A. Dagle, David J. Heldebrant
Summary: The integrated carbon capture and conversion process successfully converts captured CO2 into hydrocarbons, mainly methane, using a water-lean solvent and a heterogeneous Ru catalyst. Technoeconomic analysis shows that this process can improve thermal efficiency, reduce total capital investment, and lower the selling price of synthetic natural gas, highlighting its energetic and economic benefits.
Article
Engineering, Chemical
Ge Gao, Xiaoshan Li, Wufeng Jiang, Zhenghong Zhao, Yongqing Xu, Fan Wu, Cong Luo, Liqi Zhang
Summary: In this study, the CO2 absorption heat and sensible heat of six amino acid salt absorbents and their solutions were directly measured using high-precision microcalorimetry. The reaction rates were evaluated using a parameter called CO2 quasi-cycle capacity. Based on the results, PS was identified as a promising absorbent with low CO2 absorption heat and sensible heat.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Lei Wang, Yanyang Gao, Jianmin Luo, Xiaoxing Wang, Richard Davis, Jianjia Yu, Dongsen Mao, Fangqin Cheng, Yun Hang Hu, Sam Toan, Maohong Fan
Summary: A novel DAC technology using lysine and N-doped 3D graphene catalyst has been developed, which significantly improves CO2 absorption efficiency and working time, and accelerates desorption rate. This research provides a new strategy for developing next-generation DAC technologies.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
Xiaoqin Shi, Chenxu Li, Hui Guo, Shufeng Shen
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2019)
Article
Chemistry, Physical
Hui Guo, Yu Dong, Tiantian Ping, Xiaoqin Shi, Shufeng Shen
JOURNAL OF MOLECULAR LIQUIDS
(2020)
Article
Chemistry, Physical
Tiantian Ping, Yu Dong, Shufeng Shen
JOURNAL OF MOLECULAR LIQUIDS
(2020)
Article
Chemistry, Physical
Yu Dong, Tiantian Ping, Xiaoqin Shi, Shufeng Shen
JOURNAL OF MOLECULAR LIQUIDS
(2020)
Article
Chemistry, Multidisciplinary
Hui Li, Hui Guo, Shufeng Shen
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Chemistry, Multidisciplinary
Tiantian Ping, Yu Dong, Shufeng Shen
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Chemistry, Physical
Yu Dong, Xin Yin, Yapeng Cao, Shufeng Shen
Summary: This study investigated the density and viscosity properties of ternary systems containing different amines and EGBE with the addition of water at various temperatures. It was found that the addition of water can significantly impact molecular interactions, with the Δη values of the ternary blends being negative under the investigated conditions, except in the rich concentration region of amine and EGBE.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Thermodynamics
Xin Yin, Yu Dong, Tiantian Ping, Shufeng Shen
Summary: The densities and viscosities of the ternary system 2-(methylamino)ethanol (MAE) + DMSO + water, as well as its binary constituents, were experimentally measured. The binary mixtures exhibited negative V-E values for aqueous DMSO and aqueous MAE, while positive values were observed for the nonaqueous blend of MAE + DMSO. The properties of the ternary system were found to be predominantly influenced by binary effects.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2021)
Article
Engineering, Chemical
Yu Dong, Tiantian Ping, Shufeng Shen
Summary: This study proposes a new type of nonaqueous amine-based absorbent for low-energy CO2 capture. The Henry's law constants and vapor-liquid equilibrium data of CO2 in the absorbent blend were determined and correlated. The results indicate that this blend has good solubility and absorption performance for CO2.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Thermodynamics
Xiaoqin Shi, Yu Dong, Shufeng Shen
Summary: This study measured the densities and viscosities of different mixtures under various conditions, and found that changes in CO2 loading, amine concentration, and temperature significantly affected the properties of the solutions. The calculated values from correlation models matched well with experimental results, providing useful insights for evaluating mass transfer and hydrodynamic performance in CO2 capture processes using nonaqueous absorbents.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2022)
Article
Chemistry, Physical
Xiaoqin Shi, Shufeng Shen
Summary: The physical solubility of N2O and CO2 in alkanolamine-based systems with 2-alkoxyethanols as cosolvents was studied, and vapor-liquid equilibrium data for the CO2 + MAE + 2-ME system was measured and correlated. Liquid nonideality was found to have a significant impact on equilibrium constants.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Applied
Zhengjie Li, Lu Zhang, Yunlong Li, Lilong Zhou, Jilong Han, Hong Xu, Jimmy Yun, Shufeng Shen, Runjing Liu
Summary: In this study, functionalized MIL-101(Cr)-X materials with mesoporous pores were synthesized and used for tannic acid adsorption. Among them, NO2-substituted MIL-101(Cr) showed the highest adsorption capacity. Increasing ionic strength significantly enhanced the adsorption capacity of MIL-101(Cr)-NO2.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Engineering, Chemical
Shuo Wang, Qinghai Long, Shufeng Shen
Summary: This study investigated the effect of water content on the phase behavior and capture performance of absorbents containing ProK and EGBE, revealing a promising strategy for CO2 capture with high energy efficiency and effective water balance management using water-lean ProK/EGBE absorbents.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Shufeng Shen, Xiaoqin Shi, Chenxu Li, Hui Guo, Qinghai Long, Shuo Wang, Xin Yin
Summary: Nonaqueous amine-based absorbents have attracted attention for their potential to reduce the energy penalty of CO2 capture. This study used glycol ethers as cosolvents to dissolve alkanolamines and found that the MAE/EGME system had the lowest regeneration energy consumption for CO2 capture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Thermodynamics
Hui Li, Hui Guo, Shufeng Shen
JOURNAL OF CHEMICAL THERMODYNAMICS
(2020)