Article
Energy & Fuels
Rui Ma, Weidong Fan, Jun Chen, Hao Guo, Xin Wang, Guanyu Feng
Summary: In this study, the mechanism of NO reduction by real biogas in an advanced oxy-fuel reburning system was investigated. The effects of reduction temperature, complex atmosphere, and pyrolysis temperature on the NO reduction process were analyzed. The experimental results showed that the NO reduction rate of different biogas types followed a trend of initial increase and then decrease with increasing reduction temperature. The presence of CO, water vapor, and C4H8 in biogas significantly influenced the reduction process.
Article
Energy & Fuels
Shanhui Zhao, Linghai Chen, Xiaolong Bi, Wanjun Xu
Summary: NOx emissions during fossil fuel combustion are a significant issue. Nitrogen-containing tar compounds, such as pyridine and pyrrole, have been investigated for their potential in reducing NO emissions through decomposition and direct reduction reactions.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Thermodynamics
Fan Hu, Pengfei Li, Pengfei Cheng, Guodong Shi, Yan Gao, Yaowei Liu, Cuijiao Ding, Chao Yang, Zhaohui Liu
Summary: This study compares the homogeneous NO-reburning characteristics in flameless combustion through experiments and simulations. The results show that flameless combustion can effectively reduce NO emissions compared to swirl flame combustion, and reducing the air-preheating temperature enhances NO-reburning during flameless combustion. The numerical simulation provides insights into the reduction pathways of NO.
Article
Energy & Fuels
Zhijun Gong, Zhao Zhang, Jian Wang, Rui Qi, Wenfei Wu
Summary: The catalytic denitration performance of rare earth tailing was experimentally investigated at different temperatures, revealing that factors such as temperature, added minerals, and gas composition have significant effects on the NO conversion rate.
Article
Environmental Sciences
Zia ur Rahman, Jiaye Zhang, Lan Zhang, Xuebin Wang, Zhiwei Yang, Houzhang Tan, Richard L. Axelbaum
Summary: Pressurized oxy-combustion is a more efficient technology for carbon capture, utilization, and storage compared to atmospheric oxy-combustion, but it produces NOx. Maintaining a specific NOx concentration before the direct contact wash column is crucial for efficient pollutant removal. Through experimentation and research, the process of NOx reduction under high-pressure oxy-combustion can be optimized.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Chemistry, Multidisciplinary
Thipwipa (Tip) Sirinakorn, Taya (Ko) Saothayanun, Donhatai (Ammy) Sruamsiri, Makoto Ogawa
Summary: The study prepared layered cesium titanate (Cs2Ti5O11) with an elongated rectangular particle shape by size reduction, and found that the size-reduced H2Ti5O11 exhibited higher activity in photocatalytic H-2 production compared to pristine Cs2Ti5O11.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Physical
Wenhao Zhao, Liping Wen, Ivan P. Parkin, Xiujian Zhao, Baoshun Liu
Summary: In this study, the Fermi-level (E-F) shift of the UV-illuminated Ag/TiO2 system under gaseous conditions was evaluated using in situ photoconductance and theoretical analysis. The role of Ag nanoparticles in storing and separating electrons was discussed, and it was found that the E-F of Ag/TiO2 is located deeper in the gap and is less affected by temperature compared to undecorated TiO2. The analysis showed that approximately 46 electrons can be stored in 10 nm Ag nanoparticles under the experimental conditions, and the blue-shift of localized surface plasmon resonance (LSPR) in Ag nanoparticles is not related to electron storage.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Dinesh Singh, Bhavana Joshi, Pankaj Poddar
Summary: The thickness and exposed crystalline facets have a crucial impact on the oxygen evolution reaction (OER) of 2D ferroelectric nanosheets. Iron-substituted BiOCl nanosheets with larger thickness and exposed (001) facet exhibit higher ferroelectric polarization, leading to superior electrocatalytic activity and remarkable stability.
Article
Biochemistry & Molecular Biology
Asfa Amalia Ahmad Fauzi, Azlin Fazlina Osman, Eid M. Alosime, Ismail Ibrahim, Khairul Anwar Abdul Halim, Hanafi Ismail
Summary: Poly (ethylene-co-vinyl acetate) (PEVAc) is enhanced with dolomite nanoparticles (DNPs) to improve its tensile properties. The combination of physical and chemical modifications reduces the size of dolomite particles and improves the compatibility between dolomite and PEVAc. The resulting PEVAc nanocomposite film shows increased tensile strength and elongation at break.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Zineb Benzait, Levent Trabzon
Summary: This study investigates the impact of different graphite flake sources on the size, structure, and properties of graphene oxide (GO) and reduced graphene oxide (rGO). The results show that the graphite flake size not only affects the expansion volume and final properties of GO, but also influences the presence of organosulfate impurities, defects, size distribution, and the oxidation reaction itself.
Article
Energy & Fuels
Gangfu Rao, Meirong Dong, Wei Nie, Xiao Lin, Youcai Liang, Jidong Lu
Summary: In this study, image spectroscopy and numerical simulation were used to investigate the conversion of NH3/NO in the reburning zone. The presence of NO and NH3 resulted in a decrease in OH and an increase in NH and CN. The reduction of NO occurred earlier than the oxidation of NH. The study revealed the coupling effect of NO reduction and NH3 oxidation on nitrogen conversion, providing theoretical guidance for improving the NOx removal effect in the reburning zone.
Article
Engineering, Chemical
J. B. Dankwah, R. K. Asamoah, M. Zanin, W. Skinner
Summary: This study investigates the impact of superficial water rate, superficial gas rate, and bed particle size on bed-level and coarse particle flotation performance. The results show that bed-level increases with increasing superficial water rate, but the rate of increase is limited by bed particle size. Bed-level decreases with increasing superficial gas rate, but the rate of decrease is lower for relatively coarser bed particle sizes.
MINERALS ENGINEERING
(2022)
Article
Food Science & Technology
Ionica Cotovanu, Silvia Mironeasa
Summary: The study showed that changing the particle size and addition amount of amaranth flour can affect the composition, dough properties, and bread quality of composite flour, with small particle sizes helping to improve hydration capacity and increase protein and fat content. The tenacity and hardness of dough increase with the addition of amaranth flour, but the volume, porosity, and elasticity of bread decrease.
Review
Pharmacology & Pharmacy
Rahul Kumar, Amit K. Thakur, Nilanjana Banerjee, Pranava Chaudhari
Summary: Novel particle generation processes of Active Pharmaceutical Ingredient (API)/drug have been extensively explored in recent decades, with Rapid Expansion of Supercritical Solutions (RESS) being a promising technique. This literature review critically examines the application of RESS in the formation of fine particles, discussing the key factors such as solubility of API in SC CO2 and supersaturation that affect particle size.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2021)
Article
Food Science & Technology
Ayon Tarafdar, Barjinder Pal Kaur
Summary: Microfluidization was used for the first time to address sedimentation issues in sugarcane juice, with 150 MPa pressure and 5 processing cycles identified as optimal for reducing particle size and sedimentation rate.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
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.