Article
Engineering, Environmental
Federico Atzori, Francesco Barzagli, Alberto Varone, Giacomo Cao, Alessandro Concas
Summary: It is well known that CO2 capture and re-use is one of the main challenges to tackle global warming. Aqueous ammonia solutions have shown promising potential as sorbents for CO2 capture, offering higher absorption capacity, lower energy requirements, and greater resistance to degradation compared to conventional alkanolamines. This study investigates the chemical absorption of CO2 in aqueous NH3 solutions and proposes a mathematical model to quantify the capture efficiency dynamics and sorbent composition. The results validate the model's effectiveness in designing and optimizing the capture process, considering the effects of temperature and sorbent concentration.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Fengming Chu, Xi Liu, Qianhong Gao, Longchun Zhong, Guozhen Xiao, Qianlin Wang
Summary: The high energy consumption and ammonia escape during the ammonia regeneration process are the main barriers for the commercial application of CO2 capture technology using ammonia solutions. Metal oxides, particularly tungsten trioxide (WO3), have been found to enhance CO2 desorption and inhibit ammonia escape, thereby reducing the energy consumption of CO2 capture systems. Experimental results showed that a concentration of 0.1 mol/L of WO3 increased the CO2 desorption efficiency by 18.8% and reduced the ammonia escape efficiency by about 14%. XRD analysis confirmed that the mechanism behind the enhanced CO2 desorption process was the production of ammonium tungstate, while other metal oxides had no catalytic influence on the regeneration process.
Article
Engineering, Environmental
Zening Lv, Kun Qiao, Fengming Chu, Lijun Yang, Xiaoze Du
Summary: In this study, the CO2 desorption features from ammonia rich solution were analyzed with the addition of metal ions to reduce ammonia emission. Results showed that increasing temperature greatly increased the rates of CO2 desorption and ammonia escape. Divalent metal ions, such as Ni, Cu, and Zn, were found to promote the CO2 desorption process and inhibit ammonia escape, with Ni(II) showing the strongest effect due to greater complexation with free ammonia.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Qi Zhao, Zhao-Yang Chen, Xiao-Sen Li, Zhi-Ming Xia
Summary: This study investigates the influence of an electrostatic field on the formation of CO2 hydrate in fresh water, memory water, and saltwater systems. Experimental results show that the presence of an electrostatic field can promote the nucleation and growth of CO2 hydrate. However, the electrostatic field weakens the memory effect in the memory water system and increases the completion time of hydrate formation in the salt water system.
Article
Chemistry, Applied
Dongdong Feng, Zhecheng Zhang, Xishan Zhu, Yu Zhang, Zhen Luo, Lixiao Luo, Wenda Zhang, Chunfei Wu, Jianmin Gao
Summary: CCUS technology is a crucial method for achieving carbon neutral energy utilization. The use of ammonia CO2-capture method, though mature, has limitations such as low CO2 absorption efficiency and ammonia escape. A novel ethanol/biochar synergistic ammonia carbon capture technology is proposed, and through wetted-wall column experiments, it is proven that biochar and ethanol have a synergistic effect on CO2 absorption by ammonia. The simulation indicates that the micropores in biochar adsorb and enrich CO2, while mesopores and macropores facilitate CO2 diffusion and transport, enhancing the mass transfer capacity of CO2. The experimental results show that the mass transfer efficiency of biochar-ethanol is increased by 15.4%, surpassing that of ethanol (7.1%), but ammonia escape is more pronounced. The enhancement effect of biochar's pore structure on CO2 diffusion into ammonia could be a promising direction for improving CO2 capture by ammonia.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Agricultural Engineering
Francisco M. Baena-Moreno, Daofeng Mei, Henrik Leion, David Pallares
Summary: The calcium looping technology is a promising method for CO2 capture and storage. Previous studies have focused on evaluating this technology using combustion flue gas, while little is known about its performance when capturing CO2 from biogas or gases resulting from hydrothermal carbonization. This experimental study assesses the performance of calcium looping for biogas and finds improved CO2-capture performance compared to combustion flue gas.
BIOMASS & BIOENERGY
(2023)
Article
Engineering, Environmental
Sreetama Ghosh, Louise Olsson, Derek Creaser
Summary: This study proposes a kinetic model for predicting the trends of direct CO2 hydrogenation to hydrocarbon products over the In2O3/HZSM-5 catalyst. The accuracy of the model is verified through experiments.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Rujie Wang, Yuying Yang, Mengfan Wang, Jinshan Lin, Shihan Zhang, Shanlong An, Lidong Wang
Summary: This study utilized 1-propanol as a phase splitter for diethylenetriamine (DETA) aqueous solvents, achieving tunable phase separation properties by varying the concentration of 1-propanol. Molecular dynamics simulations revealed the mechanism of phase separation upon 1-propanol introduction, and a promising DETA?1-propanol biphasic solvent with superior performance was proposed.
Article
Engineering, Chemical
Liang Mu, Qingyun Zhang, Qingyan Cui
Summary: This study focuses on capturing CO2 from simulated flue gas using adsorption-hydration method and optimizing the process. The results show that wet activated carbon 2(#) with 50.0 wt % water content performed the best with a CO2 recovery rate of 90.35%. The study also found that the variations in water content and initial gas-solid ratio had different effects on the adsorption process and CO2 recovery efficiency.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Engineering, Environmental
Gengyuan Tian, Yuan Zhou, Yanping Huang, Junfeng Wang, Yangle Wang, Chengtian Zeng, Jiajian Huang
Summary: The accidental release of carbon dioxide in carbon capture and storage (CCS) and supercritical carbon dioxide (S-CO2) power cycle systems poses severe risks to infrastructure and nearby populations. The study investigated the release characteristics of CO2 in different initial states (liquid and gaseous phase), temperatures, and rupture sizes. It found that the initial state affects the decompression process, with liquid phase resulting in lower fluid temperature and larger circumferential wall temperature gradient. The experiments also showed that lower temperatures do not damage materials, providing important insights for early leakage detection and model development.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Engineering, Environmental
Longyun Zheng, Bo Zhang, Yi Luo, Kai Guo, Zhengchao Wang, Kun Liu, Xutao Mei, Chunjiang Liu
Summary: In this study, the absorption process of CO2 bubbles in MEA solutions was investigated. It was found that the diameter of the CO2 bubble rapidly decreases and becomes stable in MEA solutions, and the terminal bubble diameter increases with the concentration of MEA. Based on this phenomenon, the absorption process was divided into two stages, mass transfer enhancement and mass transfer deterioration. A mass transfer dynamics model considering the effect of chemical reaction kinetics and reaction-induced bubble surface contamination was proposed and validated by experiment. The findings of this study are important for the design of gas-liquid reactive flow and multiphase reactors.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Huiyun Ren, Huan Li, Hongyan Shen, Youzhi Liu
Summary: This paper investigates the use of a high gravity reactor-rotating adsorption bed (RAB) to enhance gas-solid mass transfer in the process of CO2 adsorption. The results show that mesoporous silica modified by tetraethylammonium lysine ionic liquid (N(2222)Lys-Si) has a large specific surface area and good adsorption performance. The adsorption capacity of CO2 reaches 23.33 mg.g(-1) under the optimal operating conditions. Increasing the external and internal diffusion rates in the RAB can intensify the adsorption rate.
Review
Chemistry, Multidisciplinary
Mohammad Chehrazi, Bahareh Kamyab Moghadas
Summary: Over the past 30 years, the increase in energy demand due to technological advancements following the industrial revolution has led to a rise in CO2 and greenhouse gas concentrations globally. Reducing emissions of these gases has become a critical challenge for industries, and Carbon Dioxide Capture and Utilization (CCU) technology is seen as a potential solution. This article explores the possibility of using the new Chilled Ammonia Process (CAP) technology as an alternative method for CO2 recovery from ammonia plant flue gases, highlighting its advantages of capturing pollutants and converting them into valuable chemical fertilizers, while significantly reducing costs and energy consumption.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Engineering, Marine
Qiuwan Shen, Zicheng Shao, Shian Li, Guogang Yang, Jinliang Yuan, Xinxiang Pan
Summary: The study demonstrates that the B-site doped perovskite BaCo0.8Al0.2O3-δ exhibits high adsorption performance, making it suitable for reducing CO2 emissions from marine exhaust. The optimal operating parameters are determined to be 850 degrees C for adsorption/desorption temperature, 200 mL/min for CO2 volume flow rate, 100% CO2 partial pressure, and 30 minutes for absorption time. Multiple cycle results indicate that the BaCo0.8Al0.2O3-δ sorbent has high reactivity and cyclic stability.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Environmental
Wenfei Yue, Chuigang Fan, Wenli Song, Songgeng Li
Summary: This study investigates the effects of different precipitated CaCO3 precursors on the physical properties and CO2 capture performance of CaO sorbents. The results show that the presence of additives affects the crystal composition and porosity of the CaCO3 precursor, and CaO sorbents derived from CaCO3 modified with 8 mmol/L CTAB exhibit higher CO2 capture capacity than other sorbents.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Energy & Fuels
Ma Shuangchen, Chen Gongda, Zhu Sijie, Han Tingting, Yu Weijing
Article
Green & Sustainable Science & Technology
Ma Shuangchen, Chen Gongda, Gao Ran, Wen Jiaqi, Ma Lan
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2016)
Article
Green & Sustainable Science & Technology
Ma Shuangchen, Chen Gongda, Gao Ran, Zhu Sijie, Weng Xiaoyu, Jiao Kunling
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2016)
Review
Green & Sustainable Science & Technology
Ma Shuangchen, Chai Jin, Chen Gongda, Yu Weijing, Zhu Sijie
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2016)
Article
Environmental Sciences
Shuangchen Ma, Jin Chai, Gongda Chen, Kai Wu, Yajun Xiang, Zhongcheng Wan, Jingrui Zhang, Hongtao Zhu
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Engineering, Environmental
Gongda Chen, Shangchao Xiong, Xiaoping Chen, Xuefeng Chu, Rongqiang Yin, Changdong Liu, Jianjun Chen, Junhua Li
Summary: This study analyzed deactivated honeycomb V2O5-WO3/TiO2 catalysts used for over 4000 hours in glass furnaces, revealing that the adhered substance was mainly composed of Na2SO4 and CaSO4, with arsenic penetrating to a depth of over 370 μm and inducing a three-stage penetration and deactivation process. It was found that molten and volatile As2O3 played a key role in the deactivation caused by arsenic.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Sa Lv, Peiyu Geng, Yaodan Chi, Huan Wang, Xuefeng Chu, Gongda Chen, Wenshi Shang, Chao Wang, Jia Yang, Zhifei Cheng, Xiaotian Yang
Summary: A Cu(OH)(2)/Ni3S2 composite was prepared by simple electrodeposition, exhibiting significantly enhanced pseudocapacitance performance, good coulombic efficiency, and remarkable cyclic stability.
Article
Chemistry, Multidisciplinary
Mumin Rao, Xiangbo Zou, Ji Ye, Cao Kuang, Chuangting Chen, Cong Huang, Gongda Chen, Shiwei Qin, Zhenyi Wang, Lingchong Feng, Yang Tang, Jianglei Tian, Jun Cheng
Summary: This study comprehensively investigated the combined effects of various CO2 concentrations and light intensities on microalgal growth and carbon fixation. The results demonstrated the importance of the correct match of CO2 concentration and light intensity for optimizing microalgal biomass and carbon fixation.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Yang Liu, Gongda Chen, Jianjun Chen, Hejingying Niu
Summary: This study investigated the catalytic performance of different catalysts prepared using metal organic framework (MOF) as carriers and noble metal Pt as the active component. The results showed that rod-shaped Pt/MOF-BTC exhibited the best catalytic performance, with high stability and resistance to water. The study also found that the amorphous structure of Pt/MOF-BTC had no effect on its catalytic activity. These findings provide valuable insights for future research on MOF in the field of volatile organic compound catalytic oxidation.
Article
Engineering, Environmental
Gongda Chen, Jianjun Chen, Xiaoping Chen, Rongqiang Yin, Kezhi Li, Junhua Li
Summary: This study investigated the influence of catalyst physical structure, monolith or powder, on the characterization of V2O5-WO3/TiO2 catalysts. Important catalytic behaviors and phenomena, including depth-dependent distribution of external elements, penetration of As2O3, and the formation of Tl2O-TiO2 p-n junctions, were observed only on monolithic catalysts. Grinding the monolith into powder alters the catalyst surface and may misperceive its true performance under working conditions. Therefore, cautious pretreatment of commercial honeycomb V2O5-WO3/TiO2 catalysts is important for accurate analysis.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Plant Sciences
Lingchong Feng, Wangbiao Guo, Jiansheng Guo, Xing Zhang, Xiangbo Zou, Mumin Rao, Ji Ye, Cao Kuang, Gongda Chen, Chuangting Chen, Shiwei Qin, Weijuan Yang, Jun Cheng
Summary: In this study, the dynamic changes of organelle microstructures in Chlorella pyrenoidosa cells during photosynthetic growth were investigated using FIB-SEM. The results showed that mitochondria split into dumbbell and circular ring shapes, with decreased distances to chloroplast and nucleus to enhance energy transfer. The pyrenoid in each chloroplast developed from a large part and a small part to an equal size. The nucleolus became larger with euchromatin replication, while the number of starch grains increased but the mean grain volume remained unchanged.
Article
Green & Sustainable Science & Technology
Mengying Li, Pan Zhang, Gongda Chen, Dong Fu
Summary: The CO2 desorption performance and corrosion characteristics of AAILs in MDEA aqueous solutions were investigated. The influences of AAILs type, concentration, temperature, and CO2 loading on CO2 desorption and corrosion rate were analyzed. FT-IR, 13C NMR, SEM and EDS characterization were used to evaluate the desorption and corrosion mechanisms. The study found that AAILs have good desorption performance and can effectively reduce the corrosion rate of MDEA aqueous solutions.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2023)
Article
Chemistry, Physical
Jianjun Chen, Rongqiang Yin, Gongda Chen, Junyu Lang, Xiaoping Chen, Xuefeng Chu, Junhua Li
Summary: In this study, using V2O5-WO3/TiO2 catalyst, the efficient capture of gaseous Tl2O from combustion flue gas was investigated. Experimental and theoretical results showed that Tl2O can easily interact with TiO2 to form a p-n junction on the surface, making it an effective method to eliminate Tl emission.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Engineering, Environmental
Gongda Chen, Jianjun Chen, Xiaoping Chen, Rongqiang Yin, Kezhi Li, Junhua Li
Summary: The physical structure of the catalyst, whether monolithic or in powder form, has a significant impact on the characterization results and catalytic performance. Certain important behaviors and phenomena of the catalysts were only observable on monolithic structures in this study, highlighting the importance of careful pretreatment when analyzing commercial V2O5-WO3/TiO2 catalysts.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
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.
