Article
Energy & Fuels
Suleiman Sani, Xin Liu, Lee Stevens, Haomin Wang, Chenggong Sun
Summary: In this work, novel solid amine adsorbents were prepared by impregnating polyethyleneimine (PEI) on mesoporous carbons. The adsorbents exhibited excellent CO2 adsorption capacity and thermo-stability, making them ideal candidates for post-combustion CO2 capture.
Article
Thermodynamics
Zhaoyang Cui, Qian Du, Jianmin Gao, Rushan Bie
Summary: In this paper, a waste heat recovery route of CO2 chemical absorption systems is proposed to achieve waste heat recovery and cascade utilization in heating season. Simulation and experimental methods were used to study carbon capture systems and absorption heat pump. The system can achieve energy conservation and CO2 emission reduction effect, with over 80% of the solution waste heat recovered and the two-stage gas waste heat recovery process improving boiler efficiency by over 19%.
APPLIED THERMAL ENGINEERING
(2023)
Article
Engineering, Environmental
Hyung Jin Yoon, Chan Hyun Lee, Ki Bong Lee
Summary: In this study, mass transfer enhanced CaO pellets were prepared by utilizing CO2 evacuation to form channels, which significantly improved the initial stage of CO2 sorption and accelerated the sorption kinetics. The enhanced mass transfer not only increased the CO2 sorption uptake at different temperatures, but also had a positive effect on CO2 release after capture. The fast CO2 sorption and regeneration kinetics of the new pellets significantly enhanced the energy efficiency of continuous CO2 capture processes.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Xiaolin Wang, Shufan Yang, Hai Zhang, Xingguang Xu, Colin D. Wood, Wojciech Lipinski
Summary: CO2 hydrate-based cold thermal energy storage is a promising method for load shifting and demand management. DEAIHs can be an effective CO2 absorber, but the influencing factors on its performance are unclear. Research on the performance of DEAIHs and their application in cyclic CO2 gas storage for CTES systems has been conducted.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Energy & Fuels
Haris Ishaq, Curran Crawford
Summary: This study compares the energy and exergy efficiencies of CO2-based alternative fuel systems using methanol, dimethyl ether, and methane. The results show that the methane fuel system has lower costs and higher energy efficiency.
Article
Chemistry, Multidisciplinary
Zhou Dong, Mohammad Peydayesh, Felix Donat, Tonghui Jin, Ting Li, Christoph R. Muller, Raffaele Mezzenga
Summary: This study develops a method using amyloid fibrils derived from food proteins as solid adsorbents for direct capture of CO2 from the air. The results show that the CO2 sorption properties of the adsorbents depend on the mixing ratio of aminosilane and the type of amyloid fibril. Beta-lactoglobulin fibril-templated aerogels exhibit the highest CO2 adsorption capacity.
Article
Engineering, Chemical
Chenhuan Xu, Yongmin Zhang, Yun-Lei Peng, Tianlei Yang, Zhe Liu, Feng Qiu, Adefarati Oloruntoba, Shuai Jiang
Summary: In this study, the stability of a resin-based solid amine sorbent in a circulating fluidized bed temperature swing adsorption (CFB-TSA) process was evaluated. Thermal degradation, CO2-induced degradation and oxidative degradation were identified as possible types of degradation. The presence of water molecules was found to alleviate oxidative and CO2-induced degradation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Energy & Fuels
Mohammad Saleh-Abadi, Mohsen Rostami, Amirhamzeh Farajollahi
Summary: The future electricity generation model will integrate intermittent renewable sources and require energy storage technologies for efficiency and availability. A hybrid mechanical/chemical/electrochemical energy storage system was investigated, using the power-to-X concept to convert stored energy into useful fuels. The system achieved superior performance as an integrated multigeneration energy storage system, with high efficiency and low environmental impact.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Green & Sustainable Science & Technology
X. Duan, G. Song, G. Lu, Y. Wang, J. Sun, A. Chen, X. Xie
Summary: This review summarizes the preparation methods and performance characteristics of current amine-modified sorbents, compares the differences in adsorption capacity, adsorption kinetics, regeneration energy, and cycling stability. It also analyzes the influencing factors of chemisorption performance and evaluates the technical and economic feasibility of four low-energy CO2 sorbent regeneration routes. Finally, it outlines the future challenges and research interests in the development of industrialized DAC technology.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Engineering, Chemical
John-Timothy Anyanwu, Yiren Wang, Ralph T. Yang
Summary: It was found that amine-grafting at low temperature can result in higher amine loadings, especially under wet grafting conditions. This is because more water occupies the pore space at lower temperatures, leading to higher amine loadings.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Hong Dong, Li-Hua Li, Zhendong Feng, Qing-Nan Wang, Peng Luan, Jun Li, Can Li
Summary: Directly capturing CO2 from the air at ambient conditions is challenging due to the competition of water adsorption and low CO2 pressure. In this study, we developed amine-functionalized quasi-metal-organic frameworks (X-UIO-EDA) with high CO2 capture capacity, and discovered that water-assistance enhances CO2 capture under 400 ppm CO2 and humidity. The results showed that 2-UIO-EDA had a 10-fold higher CO2 capture capacity under humid air conditions compared to dry air conditions, and quasi-UIO-66 had more amine modification sites for higher CO2 capture.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Physical
Shiming Zhang, Qianhao Pan, Yapei Wang
Summary: Renewable solid sorbents have shown potential for CO2 capture and storage, but current methods have high energy consumption and complexity. This study presents a light-controlled CO2 separation system using natural sawdust and polyethyleneimine, which offers low energy input and simple operation. The system demonstrates direct and reversible adsorption and release of CO2 in response to sunlight, making it a promising alternative to traditional alkaline CO2 collection methods.
GREEN ENERGY & ENVIRONMENT
(2022)
Review
Chemistry, Multidisciplinary
Thien S. Nguyen, Nesibe A. Dogan, Haeseong Lim, Cafer T. Yavuz
Summary: The development of porous solid materials with tunable amine content is necessary for efficient CO2 capture, and unifying both sorbents in one system can address regeneration issues.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Engineering, Chemical
Quyen T. Vu, Hidetaka Yamada, Katsunori Yogo
Summary: Different amines were evaluated for their effects on the stability of CO2 adsorbents in dry and wet oxygen environments. Amines with high molecular weight and long chain alkyl linkers demonstrated higher resistance to oxygen. Additionally, the presence of steam was found to affect the oxidative degradation of amine-based CO2 sorbents depending on the amine structure.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Engineering, Environmental
Ningtong Yi, Mengxiang Fang, Wentao Di, Zhixiang Xia, Tao Wang, Qinhui Wang
Summary: This study investigated the emission characteristics of AMP/MEA in post-combustion CO2 capture and found that aerosol emissions are significantly influenced by condensation nuclei and CO2 concentration within the absorber. An effective control strategy to reduce amine emissions involves nuclei pretreatment, operating optimization, and water scrubbing, leading to decreased MEA and AMP emissions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Polymer Science
Fuminori Ito, Yuriko Nishiyama, Shuhong Duan, Hidetaka Yamada
Summary: In this study, a CO2 separation membrane was prepared by blending PVA and a water-absorbing agent. The addition of amine-based additives improved the membrane's pressure resistance and separation performance when pressurized at 60 degrees C. Changing the combination of materials further enhanced the separation performance of the membrane.
Article
Chemistry, Physical
Toru Yamaguchi, Hidetaka Yamada, Takayuki Fujiwara, Kenji Hori
JOURNAL OF MOLECULAR LIQUIDS
(2020)
Article
Engineering, Chemical
Yoichi Matsuzaki, Shin Yamamoto, Hidetaka Yamada, Firoz A. Chowdhury, Kazuya Goto
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Green & Sustainable Science & Technology
Firoz Alam Chowdhury, Kazuya Goto, Hidetaka Yamada, Yoichi Matsuzaki
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2020)
Article
Polymer Science
Fuminori Ito, Yuriko Nishiyama, Rie Sugimoto, Misato Mori, Hidetaka Yamada
Summary: This study investigated the factors to improve the separation performance of PVA and water absorbing agent membranes, finding that additive compatibility and heat and pressure resistance of the materials are crucial. Additives significantly enhanced separation performance at 60°C, while membranes with more water absorbing agent performed better than those with higher PVA content.
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
F. Ito, H. Yamada
Summary: This study prepared similar PLGA/PLA microspheres using different techniques and found that microspheres prepared using membrane emulsification had better controlled drug release behavior, with a more monodisperse and spherical shape.
BULLETIN OF MATERIALS SCIENCE
(2021)
Article
Engineering, Chemical
Quyen T. Vu, Hidetaka Yamada, Katsunori Yogo
Summary: Different amines were evaluated for their effects on the stability of CO2 adsorbents in dry and wet oxygen environments. Amines with high molecular weight and long chain alkyl linkers demonstrated higher resistance to oxygen. Additionally, the presence of steam was found to affect the oxidative degradation of amine-based CO2 sorbents depending on the amine structure.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Engineering, Chemical
Ryo Nagumo, Kohei Omori, Yukihiro Muraki, Shuichi Iwata, Hideki Mori, Hidetaka Yamada
Summary: This study investigates the correlation between macroscopic properties and microscopic criteria in ethylene glycol-based absorbents through molecular dynamics simulations. The negative correlation between diffusivity and residence time can be categorized based on the number of hydroxy groups in the solvent molecules, with disparities arising from potential hydrogen bonding. The study proposes using residence time as a criterion for evaluating macroscopic properties.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Polymer Science
Fuminori Ito, Yuriko Nishiyama, Rie Sugimoto, Misato Mori, Hidetaka Yamada
Summary: This study demonstrated the fabrication of a high-performance CO2 separation membrane by compounding amine-based additives with composite polymers composed of PVA and PAANa. The membrane showed excellent selectivity in separating CO2 from a CO2-He mixture, exceeding 600 at certain pressures and temperatures. The evaluation also included comparison of separation performances and physical properties of different membranes.
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY
(2021)
Article
Polymer Science
Fuminori Ito, Rie Sugimoto, Misato Mori, Hidetaka Yamada
Summary: By incorporating carbonate into composite polymer membranes, the separation performance of CO2/He mixed gas was improved. The experiment results showed that the membrane exhibited optimal separation performance at a certain thickness and carbonate concentration range.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Engineering, Chemical
Yuki Suzuki, Daisuke Kodama, Hirotoshi Mori, Nahoko Kuroki, Firoz Alam Chowdhury, Hidetaka Yamada
Summary: In this study, the CO2 Henry's law constants for several ionic liquids were predicted using the COSMO-RS method and machine learning. The solubilities of hydrocarbons in these selected ionic liquids were measured, and the CO2/hydrocarbon selectivities were calculated based on the experimental data. The results show that the selectivity depends on the anion of the ionic liquid.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Metallurgy & Metallurgical Engineering
Quyen Thi Vu, Hidetaka Yamada, Katsunori Yogo
Summary: Amine based adsorbents are promising for CO2 removal due to their low regeneration energy and high capture performance. This study investigated the stability of TEPA based materials under oxidizing conditions and found that gas impurities caused a significant loss in CO2 adsorption capacity, while the presence of water vapor and CO2 suppressed oxidative degradation.
ISIJ INTERNATIONAL
(2022)
Article
Engineering, Chemical
Quyen Thi Vu, Firoz Alam Chowdhury, Hidetaka Yamada, Katsunori Yogo
Summary: In this study, the commercial polyamine tetraethylenepentamine (TEPA) was separated and purified, and the influence of different components of TEPA on the CO2 adsorption performance and stability was investigated. Polyamines with piperazine rings exhibited higher amine efficiency, regeneration ability, and O-2 resistance. The results provide a new approach for the development of novel effective and stable amine solid sorbents for CO2 capture.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Polymer Science
Fuminori Ito, Yuriko Nishiyama, Rie Sugimoto, Misato Mori, Hidetaka Yamada
Summary: This study produced a high-performance CO2 separation membrane through optimizing the type and ratio of water-absorbing agents, demonstrating excellent CO2/He selectivity, heat resistance, and pressure resistance.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)