Article
Engineering, Chemical
Nan Wang, Chunyan Ma, Nannan Ye, Xiaoyan Ji
Summary: This study developed ILs-based hybrid solvents for CO2 separation from biogas and investigated the effects of IL mass fraction and temperature on absorption capacity, viscosity, and density. It was found that increasing IL mass fraction and decreasing temperature enhanced CO2 solubility. The process simulation and evaluation showed that thermal regeneration required less energy and had lower capture cost compared to air-blow regeneration. Reducing the PC content also decreased energy demand and capture cost.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Sahar Foorginezhad, Gangqiang Yu, Xiaoyan Ji
Summary: CO2 capture is crucial for reducing emissions and purifying gases. Using liquid green absorbents, such as ionic liquids (IL) and deep eutectic solvents (DES), has been proposed as an effective option. This research reviewed the recent progress in ILs/DESs for CO2 capture and predicted their properties using COSMO-RS, providing insight for developing IL/DES-based technologies. The top 10 ILs/DESs were also listed based on specific criteria.
FRONTIERS IN CHEMISTRY
(2022)
Article
Environmental Sciences
Imran Khan Swati, Qazi Sohaib, Shuyun Cao, Mohammad Younas, Dan Liu, Jianzhou Gui, Mashallah Rezakazemi
Summary: Four ionic liquids were synthesized for the separation of gases CO2/N-2 and CO2/CH4 through supported ionic liquid membranes (SILMs), with [BSmim][tos] showing the highest solubility coefficient and permeability, as well as the highest selectivity values. The ILs synthesized for this work can be ranked as [BSmim][tos] > [BSmpy][tos] > [Bmim][Cl] > [Bpy][Cl], indicating their potential use for CO2 separation through SILMs.
Article
Chemistry, Multidisciplinary
Ayeshe Moazezbarabadi, Duo Wei, Henrik Junge, Matthias Beller
Summary: By employing amino acids as counter ions and utilizing arginine as catalyst, efficient CO2 capture and conversion to formate were achieved.
Article
Environmental Sciences
Syed Awais Ali, Syed Nasir Shah, Mansoor Ul Hassan Shah, Mohammad Younas
Summary: The CO2 emissions are rapidly increasing due to continuous emissions from industries and the transport sector. Although there was an 8.8% decrease in CO2 emissions in the first half of 2020 due to COVID-19 restrictions, the emissions are rising again and may exceed the estimated level in 2030. The current methods for CO2 separation have limitations, and to overcome this, a supported ionic liquid membrane (SILM) incorporated with a bimetallic metal-organic framework (MOF) of copper and magnesium ions (CuxMgx) and a specific ionic liquid (IL) was developed. The SILM showed improved CO2 permeability and selectivity under humid conditions, making it suitable for industrial flue gases.
Article
Engineering, Chemical
Abishek Kasturi, Gyoung Gug Jang, Adeola Dona-Tella Akin, Amiee Jackson, Jiheon Jun, Diana Stamberga, Radu Custelcean, David S. Sholl, Sotira Yiacoumi, Costas Tsouris
Summary: The development of a cost-effective, corrosion resistant, high-flux direct air capture (HiDAC) contactor for a solvent-based direct air capture (DAC) process is reported. The HiDAC contactor has a high specific surface area, resistance to corrosion, and high wettability, making it well suited for DAC.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Polymer Science
David Domingo Huguet, Aitor Gual, Ricard Garcia-Valls, Adrianna Nogalska
Summary: This study demonstrates the potential of improving CO2 capture capabilities by supporting ionic liquids (ILs) on a polymeric matrix. The internal morphology and surface characteristics of the membrane were found to influence the ILs sorption capacity and CO2 solubility.
Article
Environmental Sciences
Waqad Ul Mulk, Mansoor Ul Hassan Shah, Syed Nasir Shah, Qi-Jun Zhang, Asim Laeeq Khan, Mahdi Sheikh, Mohammad Younas, Mashallah Rezakazemi
Summary: The main obstacles in adopting solvent-based CO2 capture technology from power plant flue gases at the industrial scale can be overcome using new green and more stable ionic liquids as solvents. In this study, phosphonium chloride-based ILs immobilized on hydrophobic porous supports were tested for CO2 permeability and selectivity, with PTFE support-based SILM performing the best. This research suggests that phosphonium chloride-based ILs could be better solvent candidates for CO2 removal from large volumes of flue gases.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Na Yang, Rong Xue, Guibo Huang, Yunqian Ma, Junya Wang
Summary: The study demonstrated that nanomaterial based on ionic liquid-modified calcined magnesites showed excellent performance in CO2 capture, with good adsorption capacity and regeneration ability. FT-IR results revealed the direct correlation between the imidazole ring and C-N group with CO2 adsorption capacity, and enhancing the conjugative effect of the imidazole ring improved adsorption performance.
Article
Chemistry, Physical
E. D. Isaacs-Paez, A. J. Garcia-Perez, C. Nieto-Delgado, Luis F. Chazaro-Ruiz, J. R. Rangel-Mendez
Summary: A new hybrid material was prepared by supporting an ionic liquid on the macroporous structure of carbonized agave bagasse fibers. The material exhibited improved kinetics and CO2 sorption capacity. The impregnated carbon fibers showed superior sorption capacity and rate compared to the ionic liquid alone, indicating the synergy between the ionic liquid and the support. The material also demonstrated rapid CO2 sorption-desorption processes and high reversibility, suggesting its potential use in CO2 concentrators.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Review
Chemistry, Physical
Yanrong Liu, Zhengxing Dai, Zhibo Zhang, Shaojuan Zeng, Fangfang Li, Xiangping Zhang, Yi Nie, Lei Zhang, Suojiang Zhang, Xiaoyan Ji
Summary: This study comprehensively collected and summarized the solubilities of CO2 in physical- and chemical-based ILs/DESs, as well as the COSMO-RS models predicting these properties. Chemical-based ILs/DESs were found to be more effective for CO2 capture, especially those with functionalized cations and anions, and superbase DESs.
GREEN ENERGY & ENVIRONMENT
(2021)
Article
Engineering, Chemical
Nesrine Amiri, Hassiba Benyounes, Zoubida Lounis, Weifeng Shen
Summary: Ionic liquids are considered potential candidates for CO2 absorption due to their tunable properties, wide liquid range, negligible vapor pressure, and high CO2 solubility. This study investigated the feasibility of CO2 separation using the cyano-based anion ionic liquid [hmim][TCB] as a physical absorbent, comparing its performance with the organic solvent DEPG. Results showed that [hmim][TCB] was more efficient than DEPG for feed gas containing between 20 and 40 mol.% CO2, requiring lower solvent flow rate at 5 mol.% CO2 in feed gas, and the solvent could be regenerated through pressure and temperature swing processes.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Article
Biochemistry & Molecular Biology
Jinyu Cheng, Congyi Wu, Weiji Gao, Haoyuan Li, Yanlong Ma, Shiyu Liu, Dezhong Yang
Summary: This study investigated the CO2 absorption mechanism by deep eutectic solvents (DESs) based on ethylene glycol (EG) and protic ionic liquid. The results showed that CO2 not only binds to the amine group but also reacts with the deprotonated EG, forming carbamate and carbonate species. Two pathways were proposed to explain the reaction mechanism between CO2 and DESs. These findings provide new insights into the interactions between CO2 and DESs, which can contribute to the design and applications of DESs for carbon capture in the future.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Engineering, Chemical
Jie Cheng, Kunchi Xie, Pengyu Guo, Hao Qin, Liyuan Deng, Zhiwen Qi, Zhen Song
Summary: In this study, a comparative multi-level absorbent screening method was used to identify promising ionic liquids (ILs) and deep eutectic solvents (DESs) as alternative CO2 absorbents. Important physical and thermodynamic properties were estimated using deep learning and COSMO-RS models, while safety-related properties were assessed using the VEGA platform. The top ILs and DESs were identified and their CO2 capture processes were simulated, with 1-methyl-1-propylpyrrolidinium bromide: methylimidazole (1:2) identified as the most efficient absorbent. Quantum chemistry calculations were also conducted to understand its absorption mechanism.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Engineering, Chemical
Hannaneh Rasouli, Ion Iliuta, Francis Bougie, Alain Garnier, Maria C. Iliuta
Summary: A hybrid enzymatic CO2 absorption process using immobilized enzymes on a membrane and dispersed in a liquid phase was proposed. This process can achieve high absorption rates even if one component of the enzymatic system does not work properly.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Thermodynamics
Chunyan Ma, Yanhua Guo, Dongxue Li, Jianpeng Zong, Xiaoyan Ji, Chang Liu
JOURNAL OF CHEMICAL THERMODYNAMICS
(2017)
Article
Energy & Fuels
Chunyan Ma, Chang Liu, Xiaohua Lu, Xiaoyan Ji
Article
Thermodynamics
Erik Furusjo, Chunyan Ma, Xiaoyan Ji, Lara Carvalho, Joakim Lundgren, Elisabeth Wetterlund
Article
Energy & Fuels
Yujiao Xie, Johanna Bjorkmalm, Chunyan Ma, Karin Willquist, Johan Yngvesson, Ola Wallberg, Xiaoyan Ji
Article
Thermodynamics
Lara Carvalho, Erik Furusjo, Chunyan Ma, Xiaoyan Ji, Joakim Lundgren, Jonas Hedlund, Mattias Grahn, Olov G. W. Ohrman, Elisabeth Wetterlund
Article
Energy & Fuels
Chunyan Ma, Yujiao Xie, Xiaoyan Ji, Chang Liu, Xiaohua Lu
Article
Thermodynamics
Yifeng Chen, Chunyan Ma, Xiaoyan Ji, Zhuhong Yang, Xiaohua Lu
FLUID PHASE EQUILIBRIA
(2020)
Article
Chemistry, Multidisciplinary
Chunyan Ma, Shashi Kant Shukla, Rakesh Samikannu, Jyri-Pekka Mikkola, Xiaoyan Ji
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Chemistry, Physical
Nan Wang, Chunyan Ma, Hang Yu, Xiaoyan Ji
Summary: This study investigated the CO2 absorption capacity of superbase derived ionic liquid [HDBU][IM] mixed with different cosolvents, and found that [HDBU][IM]-DEPG with a 2:1 mass ratio at 298.15 K exhibited optimal performance. The research also analyzed gas solubilities, thermodynamic modeling, and the contributions of chemisorption and physical absorption, indicating the potential of [HDBU][IM]-DEPG for CO2 separation in real industrial applications.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Chunyan Ma, Michael Svard, Kerstin Forsberg
Summary: A sustainable deep eutectic solvent (DES) based on choline chloride and L-(+)-tartaric acid has been systematically studied for leaching LIB cathode material, and antisolvent crystallization has been applied for efficient metal recovery. This work presents a green, effective, and closed-loop strategy for recycling LIB cathode materials using a sustainable DES.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Engineering, Chemical
Nan Wang, Chunyan Ma, Nannan Ye, Xiaoyan Ji
Summary: This study developed ILs-based hybrid solvents for CO2 separation from biogas and investigated the effects of IL mass fraction and temperature on absorption capacity, viscosity, and density. It was found that increasing IL mass fraction and decreasing temperature enhanced CO2 solubility. The process simulation and evaluation showed that thermal regeneration required less energy and had lower capture cost compared to air-blow regeneration. Reducing the PC content also decreased energy demand and capture cost.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Zhibo Zhang, Jiajia Li, Mingbo Ji, Yanrong Liu, Nan Wang, Xiangping Zhang, Suojiang Zhang, Xiaoyan Ji
Summary: Efficient enzymatic conversion of CO2 to methanol is achieved by encapsulating enzymes in ZIF-8 and coupling with electrocatalytic NADH regeneration, leading to increased methanol concentration and cost reduction.
Review
Chemistry, Multidisciplinary
Chunyan Ma, Aatto Laaksonen, Chang Liu, Xiaohua Lu, Xiaoyan Ji
CHEMICAL SOCIETY REVIEWS
(2018)
Article
Energy & Fuels
Shitong Fang, Houfan Du, Tao Yan, Keyu Chen, Zhiyuan Li, Xiaoqing Ma, Zhihui Lai, Shengxi Zhou
Summary: This paper proposes a new type of nonlinear VIV energy harvester (ANVEH) that compensates for the decrease in peak energy output at low wind speeds by introducing an auxiliary structure. Theoretical and experimental results show that ANVEH performs better than traditional nonlinear VIV energy harvesters under various system parameter variations.
Article
Energy & Fuels
Wei Jiang, Shuo Zhang, Teng Wang, Yufei Zhang, Aimin Sha, Jingjing Xiao, Dongdong Yuan
Summary: A standardized method was developed to evaluate the availability of solar energy resources in road areas, which combined the Analytic Hierarchy Process (AHP) and the Geographic Information System (GIS). By analyzing critical factors and using a multi-indicator evaluation method, the method accurately evaluated the utilization of solar energy resources and guided the optimal location selection for road photovoltaic (PV) projects. The results provided guidance for the application of road PV projects and site selection for route corridors worldwide, promoting the integration of transportation and energy.
Article
Energy & Fuels
Chang Liu, Jacob A. Wrubel, Elliot Padgett, Guido Bender
Summary: The study investigates the effects of coating defects on the performance of the anode porous transport layer (PTL) in water electrolyzers. The results show that an increasing fraction of uncoated regions on the PTL leads to decreased cell performance, with continuous uncoated regions having a more severe impact compared to multiple thin uncoated strips.
Article
Energy & Fuels
Marcos Tostado-Veliz, Xiaolong Jin, Rohit Bhakar, Francisco Jurado
Summary: In this paper, a coordinated charging price mechanism for clusters of parking lots is proposed. The research shows that enabling vehicle-to-grid characteristics can bring significant economic benefits for users and the cluster coordinator, and vehicle-to-grid impacts noticeably on the risk-averse character of the uncertainty-aware strategies. The developed pricing mechanism can reduce the cost for users, avoiding to directly translate the energy cost to charging points.
Article
Energy & Fuels
Duan Kang
Summary: Building an energy superpower is a key strategy for China and a long-term goal for other countries. This study proposes an evaluation system and index for measuring energy superpower, and finds that China has significantly improved its ranking over the past 21 years, surpassing other countries.
Article
Energy & Fuels
Fucheng Deng, Yifei Wang, Xiaosen Li, Gang Li, Yi Wang, Bin Huang
Summary: This study investigated the synergistic blockage mechanism of sand and hydrate in gravel filling layer and the evolution of permeability in the layer. Experimental models and modified permeability models were established to analyze the effects of sand particles and hydrate formation on permeability. The study provided valuable insights for the safe and efficient exploitation of hydrate reservoirs.
Article
Energy & Fuels
Hao Wang, Xiwen Chen, Natan Vital, Edward Duffy, Abolfazl Razi
Summary: This study proposes a HVAC energy optimization model based on deep reinforcement learning algorithm. It achieves 37% energy savings and ensures thermal comfort for open office buildings. The model has a low complexity, uses a few controllable factors, and has a short training time with good generalizability.
Article
Energy & Fuels
Moyue Cong, Yongzhuo Gao, Weidong Wang, Long He, Xiwang Mao, Yi Long, Wei Dong
Summary: This study introduces a multi-strategy ultra-wideband energy harvesting device that achieves high power output without the need for external power input. By utilizing asymmetry, stagger array, magnetic coupling, and nonlinearity strategies, the device maintains a stable output voltage and high power density output at non-resonant frequencies. Temperature and humidity monitoring are performed using Bluetooth sensors to adaptively assess the device.
Article
Energy & Fuels
Tianshu Dong, Xiudong Duan, Yuanyuan Huang, Danji Huang, Yingdong Luo, Ziyu Liu, Xiaomeng Ai, Jiakun Fang, Chaolong Song
Summary: Electrochemical water splitting is crucial for hydrogen production, and improving the hydrogen separation rate from the electrode is essential for enhancing water electrolyzer performance. However, issues such as air bubble adhesion to the electrode plate hinder the process. Therefore, a methodology to investigate the two-phase flow within the electrolyzer is in high demand. This study proposes using a microfluidic system as a simulator for the electrolyzer and optimizing the two-phase flow by manipulating the micro-structure of the flow.
Article
Energy & Fuels
Shuo Han, Yifan Yuan, Mengjiao He, Ziwen Zhao, Beibei Xu, Diyi Chen, Jakub Jurasz
Summary: Giving full play to the flexibility of hydropower and integrating more variable renewable energy is of great significance for accelerating the transformation of China's power energy system. This study proposes a novel day-ahead scheduling model that considers the flexibility limited by irregular vibration zones (VZs) and the probability of flexibility shortage in a hydropower-variable renewable energy hybrid generation system. The model is applied to a real hydropower station and effectively improves the flexibility supply capacity of hydropower, especially during heavy load demand in flood season.
Article
Energy & Fuels
Zhen Wang, Kangqi Fan, Shizhong Zhao, Shuxin Wu, Xuan Zhang, Kangjia Zhai, Zhiqi Li, Hua He
Summary: This study developed a high-performance rotary energy harvester (AI-REH) inspired by archery, which efficiently accumulates and releases ultralow-frequency vibration energy. By utilizing a magnetic coupling strategy and an accumulator spring, the AI-REH achieves significantly accelerated rotor speeds and enhanced electric outputs.
Article
Energy & Fuels
Yi Yang, Qianyi Xing, Kang Wang, Caihong Li, Jianzhou Wang, Xiaojia Huang
Summary: In this study, a novel hybrid Quantile Regression (QR) model is proposed for Probabilistic Load Forecasting (PLF). The model integrates causal dilated convolution, residual connection, and Bidirectional Long Short-Term Memory (BiLSTM) for multi-scale feature extraction. In addition, a Combined Probabilistic Load Forecasting System (CPLFS) is proposed to overcome the inherent flaws of relying on a single model. Simulation results show that the hybrid QR outperforms traditional models and CPLFS exceeds the best benchmarks in terms of prediction accuracy and stability.
Article
Energy & Fuels
Wen-Jiang Zou, Young-Bae Kim, Seunghun Jung
Summary: This paper proposes a dynamic prediction model for capacity fade in vanadium redox flow batteries (VRFBs). The model accurately predicts changes in electrolyte volume and capacity fade, enhancing the competitiveness of VRFBs in energy storage applications.
Article
Energy & Fuels
Yuechao Ma, Shengtie Wang, Guangchen Liu, Guizhen Tian, Jianwei Zhang, Ruiming Liu
Summary: This paper focuses on the balance of state of charge (SOC) among multiple battery energy storage units (MBESUs) and bus voltage balance in an islanded bipolar DC microgrid. A SOC automatic balancing strategy is proposed considering the energy flow relationship and utilizing the adaptive virtual resistance algorithm. The simulation results demonstrate the effectiveness of the proposed strategy in achieving SOC balancing and decreasing bus voltage unbalance.
Article
Energy & Fuels
Raad Z. Homod, Basil Sh. Munahi, Hayder Ibrahim Mohammed, Musatafa Abbas Abbood Albadr, Aissa Abderrahmane, Jasim M. Mahdi, Mohamed Bechir Ben Hamida, Bilal Naji Alhasnawi, A. S. Albahri, Hussein Togun, Umar F. Alqsair, Zaher Mundher Yaseen
Summary: In this study, the control problem of the multiple-boiler system (MBS) is formulated as a dynamic Markov decision process and a deep clustering reinforcement learning approach is applied to obtain the optimal control policy. The proposed strategy, based on bang-bang action, shows superior response and achieves more than 32% energy saving compared to conventional fixed parameter controllers under dynamic indoor/outdoor actual conditions.