Article
Engineering, Environmental
Jongmyeong Lee, Hae-Gu Park, Myeong-Hun Hyeon, Bo-Gyeong Kim, Seok Ki Kim, Su-Young Moon
Summary: Various reactions using hydrogen to produce synthetic fuels generate H2O as a major byproduct, which can be removed in-situ using a polyimide (PI) hollow fiber membrane. The PI membrane showed high H2O permselectivity at elevated temperatures, increasing the CO yield significantly when integrated into a hollow fiber membrane reactor.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Oscar Ovalle-Encinia, Jerry Y. S. Lin
Summary: Water-gas-shift (WGS) reaction is a crucial step in IGCC power plants with CO2 capture, and using a CO2-permselective ceramic-carbonate dual-phase membrane reactor can enhance hydrogen yield and CO2 capture simultaneously. This study investigates the operation of WGS reaction in a samarium-doped ceria membrane reactor infiltrated with lithium/sodium molten carbonate. The results show that under certain conditions, high CO conversion and CO2 recovery can be achieved, but unwanted carbon deposition is observed in the catalyst-free membrane reactor.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
J. A. Fabian-Anguiano, M. J. Ramirez-Moreno, H. Balmori-Ramirez, J. A. Romero-Serrano, I. C. Romero-Ibarra, Xiaoli Ma, J. Ortiz-Landeros
Summary: The study on gamma-LiAlO2-Ag cermets integrated in a packed-bed membrane reactor demonstrates their potential for selective separation of CO2 and O2 at high temperatures, and simultaneous syngas production through oxidative CO2 reforming. The obtained cermets show excellent wettability properties against molten carbonates, corrosion resistance, and superior thermal stability, contributing to their performance in gas separation and syngas production. Long-term permeation tests also confirm the membrane's excellent thermal and chemical stability under continuous reaction conditions.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Green & Sustainable Science & Technology
Weijian Wang, Gianni Olguin, Dachamir Hotza, Majid Ali Seelro, Weng Fu, Yuan Gao, Guozhao Ji
Summary: This article summarizes the research on in-situ separation of hydrogen using inorganic membranes, focusing on the advantages and disadvantages of palladium, silica, and zeolite molecular sieve membranes to enhance hydrogen production from thermochemical reactions.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Review
Chemistry, Physical
Ali M. Bahmanpour, Matteo Signorile, Oliver Kroecher
Summary: The recent progress in catalyst design and understanding of the reaction mechanism for the RWGS reaction has led to the introduction of new promising catalysts, particularly in terms of catalyst stability at high temperatures. However, there is still room for improvement in this area for the conversion of CO2 to fuels.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Gina Bang, Dong-Kyu Moon, Jun-Ho Kang, Yun-Jin Han, Kyung-Min Kim, Chang-Ha Lee
Summary: The Pd-Cu catalytic membrane reactor (CMR) combined with a four-bed PSA system was developed to efficiently produce fuel cell grade hydrogen, enhancing CO conversion and H2 recovery. By using sweep gas, pure H2 could be directly obtained from the permeate side, resulting in H2 purity of over 99.9991% and CO concentration as low as 8.67 ppm.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Ahmad Naquash, Muhammad Abdul Qyyum, Yus Donald Chaniago, Amjad Riaz, Fatma Yehia, Hankwon Lim, Moonyong Lee
Summary: This study evaluated membrane-assisted (case-I) and cryogenic-assisted (case-II) hydrogen (H2) separation and purification technologies in terms of energy, exergy, and economic aspects. The results showed that case-I had lower energy consumption, higher exergy efficiency, but higher cost than case-II. This study can assist industry practitioners and academic researchers in selecting optimal H2 separation and purification technologies.
Article
Nuclear Science & Technology
Gessica Cortese, Alessia Santucci, Claudio Rizzello, Silvano Tosti
Summary: This study explores the performance of a membrane reactor in hydrogen recovery via Water Gas Shift reaction, with experimental results used to validate a novel simulation tool, showing good agreement between experimental and simulation results in most cases.
FUSION ENGINEERING AND DESIGN
(2021)
Article
Chemistry, Multidisciplinary
Inamullah Douna, Sarah Farrukh, Arshad Hussain, Zarrar Salahuddin, Tayyaba Noor, Erum Pervaiz, Mohammad Younas, Xian Feng Fan
Summary: Blended cellulose acetate/polysulfone membranes were fabricated for CO2/H-2 separation using the solution casting method. The addition of polysulfone improved the separation performance of cellulose acetate membrane. The fabricated blend showed notable CO2 permeability and selectivity under specific conditions.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Youngsan Ju, Hyun-Taek Oh, Jae-Cheol Lee, Chang-Ha Lee
Summary: A multi-scale dynamic model was developed for a sorption-enhanced water-gas shift (SE-WGS) fluidized bed reactor, analyzing the reactor performance with K2CO3-promoted hydrotalcite sorbent under different operating conditions. The study demonstrated that increasing the sorption capacity and rate of the CO2 sorbent could enhance the CO conversion rate and carbon capture efficiency of the SE-WGS fluidized bed reactor at 30 bar pressure.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Bingjie Pang, Peng Zhang, Zhongwei Cao, Song Wang, Jingjing Tong, Xuefeng Zhu, Weishen Yang
Summary: The article introduces a method of coupling the CO2 capture process with in situ methanation process, using a ceramic-molten carbonate (MC) dual-phase membrane reactor and a nickel-based catalyst, which can effectively reduce CO2 capture costs and improve reaction performance.
Article
Thermodynamics
Wei-Hsin Chen, Shu-Cheng Li, Steven Lim, Zih-Yu Chen, Joon Ching Juan
Summary: The study showed that lower Reynolds numbers were beneficial for ethanol conversion and H-2 recovery in ethanol steam reforming, while using Pd membrane could increase H-2 yield, and higher Reynolds numbers increased total H-2 production but decreased recovery rate.
Article
Engineering, Chemical
Qinsheng Wang, Yiyi Fan, Chengliang Wu, Yun Jin, Claudia Li, Jaka Sunarso, Xiuxia Meng, Naitao Yang
Summary: The design of a Pd-intercalated lamellar MXene membrane successfully modified the surface chemical properties of MXene and expanded the interlayer spacing, resulting in excellent H-2 permeability and selectivity, surpassing current benchmark membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Oscar Ovalle-Encinia, Han-Chun Wu, Tianjia Chen, Jerry Y. S. Lin
Summary: Experimental and simulation results demonstrate the feasibility of hydrogen production with simultaneous CO2 removal through steam reforming of methane in a CO2-perm-selective membrane reactor. The mathematical model accurately describes the process, showing that adjusting permeation number, Damkohler number, reaction pressure, and sweep side conditions can enhance H2 yield and CO2 recovery.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Mide Luo, Zong Lu, Yali Zhao, Yufei Wang, Yanying Wei, Haihui Wang
Summary: In this work, tubular 2D MXene membranes were successfully prepared on commercial porous stainless steel substrates via fast electrophoretic deposition. The prepared membranes showed advantages of simple operation, high membrane assembly efficiency, and ease for scale-up. These tubular MXene membranes exhibited excellent gas separation performance with high hydrogen permeance and selectivity. Importantly, this work provides valuable reference for the development of other 2D material-based membranes for future applications.
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.