Review
Chemistry, Multidisciplinary
Arvind Rajendran, Sai Gokul Subraveti, Kasturi Nagesh Pai, Vinay Prasad, Zukui Li
Summary: Adsorption using solid sorbents is becoming a serious competitor to liquid absorption for CO2 capture. Significant efforts have been made in developing new adsorbents for this application, but identifying the right adsorbent remains a challenge. This article discusses the development of computational methods for process-based evaluation and highlights the need for collaboration between chemists and chemical engineers.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Engineering, Chemical
Chaopeng Zhang, Chenguang Li, Wenjie Li, Xin Guo
Summary: Li4SiO4 has shown great potential as a cyclic high-temperature CO2 capture material due to its stability, capacity, and low regeneration temperature. However, the high cost of raw materials, especially lithium resources, has limited its practical application. This study synthesized Li4SiO4 sorbents using spent lithium cobalt oxide cathodes and rice husk ash, providing an alternative for CO2 capture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Chia-Hsin Chen, Erika L. Sesti, Jason J. Lee, Frederic Mentink-Vigier, Carsten Sievers, Christopher W. Jones, Sophia E. Hayes
Summary: This spectroscopic study investigates the formation and environments of bicarbonate in solid-amine CO2 sorbent materials under humid carbon capture conditions using tertiary, secondary, and primary amine moieties with mesoporous silica support. The presence of water on the walls of the mesoporous silica support and in the pore or mid-channel significantly influences the generation of bicarbonate in these materials.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Review
Green & Sustainable Science & Technology
Yuanting Qiao, Josh J. Bailey, Qi Huang, Xuebin Ke, Chunfei Wu
Summary: Porous materials with photochromic units are being investigated for their potential applications in gas separation and storage, chemical sensing, and drug delivery. This review focuses on the use of photo-switching materials for CO2 capture and highlights different types of photo-responsive adsorbents and their applications. The key purpose is to inspire more research into photo-switching sorbents for CO2 capture with the ability to control capture or release by simply switching the light on and off.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Review
Energy & Fuels
Paola Saenz A. Cavazos, Elwin Hunter-Sellars, Paul Iacomi, Sean R. McIntyre, David Danaci, Daryl R. Williams
Summary: Expanding populations and growing economies lead to higher energy demands, which require a diverse energy mix and deployment of carbon capture and removal technologies to reduce carbon emissions. However, the lack of materials-related information and the inconsistency in measurement parameters and data presentation pose challenges to the scale-up of these technologies, especially in the case of solid adsorption-based carbon capture. This review examines the characterization of solid sorbents for carbon capture, focusing on performance parameters and experimental conditions, and emphasizes the importance of experimental data.
FRONTIERS IN ENERGY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Juliana S. A. Carneiro, Giada Innocenti, Hyun June Moon, Yoseph Guta, Laura Proano, Carsten Sievers, Miles A. Sakwa-Novak, Eric W. Ping, Christopher W. Jones
Summary: This study investigates the impact of humidity on the oxidative degradation of a solid supported amine sorbent, poly(ethylenimine) (PEI) supported on Al2O3. Through various analysis techniques, the researchers obtained a comprehensive understanding of the sorbent oxidation process under accelerated conditions, including the identification of major oxidative products and the role of humidity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Yoseph A. Guta, Juliana Carneiro, Sichi Li, Giada Innocenti, Simon H. Pang, Miles A. Sakwa-Novak, Carsten Sievers, Christopher W. Jones
Summary: Aminopolymer-based sorbents are effective for extracting CO2 from ambient air, but their stability is crucial for developing high-performing sorbents.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Shiyi Ni, Nana Wang, Xin Guo, Junbo Liu
Summary: In this study, expanded perlite (EP) was used as a silicon source to synthesize Li4SiO4 sorbent. It was found that metal impurities in EP can improve the sorption performance of the sorbent, and adding agar or using organic lithium source can enhance the sorption capacity of the pellets.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Green & Sustainable Science & Technology
Chen Zhang, Xinqi Zhang, Tingyu Su, Yiheng Zhang, Liwei Wang, Xuancan Zhu
Summary: This review comprehensively assesses five different modification schemes, including acid/alkali/salt treatment, inert supports, functional groups, nanomaterials, and multi-phase sorbents, to provide insights into the mechanisms, performances, and commercial analysis for trace CO2 capture. The features of different schemes are compared and tabulated to guide sorption performance enhancement. Commercial assessments for TCC materials are conducted using a multivariable model, and future development of sorption performance enhancement schemes for low-concentration capture of CO2 is proposed.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Engineering, Environmental
Ana Paula Soares Dias, Bruna Rijo, Sara Castilho, Manuel Francisco Pereira, Alain Kiennemann
Summary: Sorbents derived from eggshells and carboxylic acids using the sol-gel method exhibited different morphologies and performances. The lactic acid-derived sorbent showed the highest stability and the lowest decay in capacity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Shuzhen Chen, Jinze Dai, Changlei Qin, Weiyang Yuan, Vasilije Manovic
Summary: Research indicates that the equilibrium temperature for CO2 adsorption/desorption of Li4SiO4-based sorbents at high temperatures is higher than theoretical values, with silicon precursors and Ce/Fe dopants having minimal effects on equilibrium. Sorbents with K/Na exhibit significant drops in equilibrium temperature at 0.5 atm of CO2, and higher K doping results in lower turnover temperatures.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Nazila Masoud, Victorien Clement, Tomas van Haasterecht, Marlene Fuhrer, Jan P. Hofmann, Johannes Hendrik Bitter
Summary: Solid sorbents containing metal oxides and/or alkali metal carbonates show promise for capturing CO2 from air. However, the diffusion of CO2 into the sorbent material may limit the efficiency of the capture process. In this study, the size of supported K2CO3 particles was determined using various techniques. The results showed that particle size plays a critical role in the sorbent's efficiency and kinetics for CO2 capture. Understanding the microscopic characteristics of sorbents can help optimize industrial-scale CO2 capture from air.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Environmental
Chenglong Hou, Dharam Raj Kumar, Yu Jin, Yusong Wu, Jason J. Lee, Christopher W. Jones, Tao Wang
Summary: A new design approach for QA-based polymeric sorbents was proposed to enhance CO2 capture efficiency through porosity control and hydrophilicity modulation. Experimental results showed that optimized structure can make the sorbents adaptive to varied and complex atmospheric circumstances.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Yichao Tong, Shuzhen Chen, Xin Huang, Yong He, Jie Chen, Changlei Qin
Summary: This review critically discusses the state-of-the-art researches on the CO2 capture by Li4SiO4, focusing on thermodynamic equilibrium, reaction mechanisms, kinetics, sorbent modifications, and potential applications. It emphasizes the difference between theoretical and practical CO2 adsorption/desorption equilibrium, discusses the distribution features and mechanisms, analyzes kinetic models and recent advances in high-efficient Li4SiO4-based sorbents.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Ruicheng Fu, Yingchao Hu, Wenxia Wang
Summary: This study addresses the issues of powder elutriation and low sorption performance in Li4SiO4-based CO2 sorbents through the use of an alginate-assisted technique. The technique successfully improves the granulation and performance of the sorbents, making them suitable for practical application in CO2 capture. The addition of Li2CaSiO4 in the synthesis process enhances the sorption capacity of the Li4SiO4 sorbents, and a proposed sorption model explains the mechanism behind this enhancement.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Wanqiang Wu, Lunbo Duan, Lin Li, Zhihao Yang, Daoyin Liu, Edward John Anthony
Summary: This study investigates the effects of pressure, superficial velocity, and particle size on gas interchange between bubble and emulsion phases in a high-temperature oxy-fuel fluidized bed. Both experiments and CFD simulations were used to analyze the gas interchange coefficient, which was found to decrease with increasing pressure and increase with increasing superficial velocity and particle size. The study proposes a formula to calculate the gas interchange coefficient considering the influence of pressure on the gas diffusion coefficient in a pressurized oxy-fuel fluidized bed.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Review
Energy & Fuels
Hisham Al Baroudi, Adeola Awoyomi, Kumar Patchigolla, Kranthi Jonnalagadda, E. J. Anthony
Summary: The paper critically reviews CO2 shipping as a transportation option for CCUS, highlighting its potential role in global CO2 transport. It discusses technological advances in marine carrier CO2 transportation and explores its feasibility compared to other transportation options. Despite challenges, implementation of CO2 shipping is crucial to support CCUS both in the UK and worldwide.
Article
Energy & Fuels
Shuang Yue, Chunbo Wang, Ziyang Xu, Fei Zheng, Tong Si, Edward J. Anthony
Summary: This study uses density functional theory calculations to investigate the effect and mechanism of CO on NO2 reduction over carbonaceous surfaces, revealing the promotion of CO on CO2 desorption and its impact on electron transfer and energy barrier reduction.
Article
Engineering, Environmental
Shuzhen Chen, Jinze Dai, Changlei Qin, Weiyang Yuan, Vasilije Manovic
Summary: Research indicates that the equilibrium temperature for CO2 adsorption/desorption of Li4SiO4-based sorbents at high temperatures is higher than theoretical values, with silicon precursors and Ce/Fe dopants having minimal effects on equilibrium. Sorbents with K/Na exhibit significant drops in equilibrium temperature at 0.5 atm of CO2, and higher K doping results in lower turnover temperatures.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Shuang Yue, Chunbo Wang, Yulin Huang, Ziyang Xu, Jiaying Xing, Edward J. Anthony
Summary: Oxy-steam combustion is a promising technology for reducing CO2 emissions. This study investigated the transformation and release of nitrogen under oxy-steam conditions, revealing that char prepared in a N-2/H2O atmosphere has higher nitrogen content compared to a N-2 atmosphere. The presence of OH radicals inhibits the transformation of N-Q to N-6 and promotes the conversion of N-6 to N-5, ultimately leading to lower emissions of HCN and NH3 under N-2/H2O conditions.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jiaying Xing, Chunbo Wang, Yulin Huang, Shuang Yue, Edward J. Anthony
Summary: This study investigated the effect of W and Mo modification on arsenic adsorption over Cu/gamma-Al2O3 catalyst. Results showed that W and Mo modification improved the NO conversion activities at low temperatures and reduced the arsenic adsorption on Cu/gamma-Al2O3 catalyst. W modification had a stronger promotion effect on arsenic resistance compared to Mo modification, and the proportion of As5+ on the W-Cu/gamma-Al2O3 surface was larger than that on the Mo-Cu/gamma-Al2O3 surface. Theoretical simulations revealed that Al2O3 adsorption on Mo-Cu/gamma-Al2O3 surface was stronger than that on W-Cu/gamma-Al2O3 surface.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Shuang Yue, Chunbo Wang, Ziyang Xu, Dong Wang, Fei Zheng, Edward J. Anthony
Summary: This study compared NO emissions during oxy-steam and air combustion of coal char, emphasizing the role of H2O and its resulting radicals in NO formation and reduction reactions. High concentrations of H2O promote the formation of OH radicals and hydroxyl groups during oxy-steam combustion, affecting NO formation and reduction reactions and ultimately NO emissions.
COMBUSTION AND FLAME
(2022)
Article
Energy & Fuels
Liang Chen, Yuan Fang, Chunbo Wang, Yajin Huo, Wenjing Wang, Edward J. Anthony
Summary: This study investigates the mechanism and effects of H2O on CaO sulfation through density functional theory and experiments. The presence of H2O decreases the energy barrier for Ca2+ diffusion on the CaSO4 surface, enhances the outward diffusion of Ca2+, and improves the adsorption of SO2 on a CaSO4 surface.
Article
Energy & Fuels
Ayub Golmakani, Seyed Ali Nabavi, Basil Wadi, Vasilije Manovic
Summary: The use of biogas as a renewable energy resource has the potential to significantly reduce greenhouse gas emissions, however its share in the global renewable energy market does not reflect this potential. This study reviews advancements in biogas cleaning and upgrading technologies, addresses converting biogas to biomethane, and discusses the application of biogas in various technologies.
Article
Chemistry, Applied
Tong Si, Liang Chen, Chunbo Wang, Fuchun Ren, Yujie Ren, Edward J. Anthony
Summary: High-temperature filtration in coal units is an effective way to purify and utilize coal power. The results show that the high-temperature precipitator has good dust removal efficiency at different loads and has a smaller pressure drop compared to conventional filters. Compared to other treatment technologies, the high-temperature precipitator can reduce ammonia emissions in exhaust gas and significantly improve the air preheater blockage issue. Coal-fired power plants applying high-temperature precipitators can achieve energy consumption benefits and have a significant impact on reducing CO2 emissions.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Environmental Sciences
Jude O. Asibor, Peter T. Clough, Seyed Ali Nabavi, Vasilije Manovic
Summary: This study assesses the deployment potential of five greenhouse gas removal (GGR) technologies at the country level and identifies priority regions. The results indicate the need for countries to include and prioritize these technologies in their nationally determined contributions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Thermodynamics
Shuang Yue, Chunbo Wang, Edward J. Anthony
Summary: A detailed investigation into the intrinsic kinetics mechanisms for the catalytic reduction of NO by Na-loaded char was conducted using DFT and TST calculations. The results revealed the essential role of the catalytic active center -O -Na in the interaction between NO and carbonaceous surface, with sensitivity to temperature and NO-to-CO stoichiometric ratio. Inspired by the findings, a conceptual approach for improving the catalytic performance of Na on NO reduction was proposed and shown to be theoretically feasible.
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(2023)
Article
Chemistry, Multidisciplinary
Robin Abu, Kumar Patchigolla, Nigel Simms, Edward John Anthony
Summary: The use of hydrocarbon fuels and natural gas flaring is increasing due to population growth and rising standards of living. This paper aims to establish a framework and management tool to reduce regular gas flaring in Nigeria. The tool incorporates techno-economic analysis to assist operators and investors in making more profitable investment decisions.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Environmental
Basil Wadi, Chenhao Li, Vasilije Manovic, Peyman Moghadam, Seyed Ali Nabavi
Summary: In this study, the effects of primary, secondary, and tertiary amines on the adsorption of CO2 and CH4 were investigated. The adsorption performance and characteristics of the amine-functionalized adsorbents were analyzed. It was found that primary amines showed stronger interaction forces with CH4, while secondary amines were more selective in CO2/CH4 separations. Moderate densities of secondary amines were identified as potential candidates for adsorbent development.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Ke Wang, Jie Chen, Tianyu Wang, Jie Hong, Pengfei Zhao, Edward J. Anthony
Summary: Capture and conversion of CO2 from optimal scenarios into fuels or chemicals provide a viable solution to combat climate change. The proposed synergistic integration of catalytic calcium-looping gasification of biochar can capture and in situ convert CO2. Experimental tests and characterizations showed that the mixture of limestone and K2CO3-impregnated biochar can enhance decarbonation kinetics and CO yield, maintaining stable CO2 conversion at lower temperatures. The process demonstrated practical scalability and cost-effectiveness, opening a unique direction for net-negative emission.
CHEMICAL ENGINEERING JOURNAL
(2023)
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.
