Article
Materials Science, Ceramics
Yingchao Hu, Hongyuan Lu, Hailong Li
Summary: Rice husk as a pore former can enhance the CO2 sorption capacity of Li4SiO4 sorbents, but pore blockage by ashes could reduce the capacity, indicating a tradeoff between the positive and negative effects of rice husk templating for Li4SiO4 pellets.
CERAMICS INTERNATIONAL
(2021)
Article
Energy & Fuels
Vanessa Hernandez-Tapia, Elizabeth Vera, Rosa-Maria Ramirez-Zamora, Brenda Alcantar-Vazquez
Summary: This study synthesized two slag-derived Li4SiO4 using metallurgical slags as silica sources and investigated their application as CO2 sorbents. The CO2 desorption process was studied under fixed temperature, with varying CO2 partial pressure and desorption temperature. The kinetic parameters of CO2 desorption were analyzed using the Avrami-Erofeev and zero-order models. The results showed that the activation energy calculated with the Avrami model was significantly higher than the reported sorption values and that Li4SiO4 derived from electric arc furnace slag exhibited less temperature dependence compared to that derived from blast furnace slag. Furthermore, the desorption kinetics were found to decrease with lower partial pressures of CO2, and the cyclic study revealed the formation of secondary phases in the slag-derived silicates.
Article
Engineering, Chemical
Zongze Lv, Changlei Qin, Shuzhen Chen, Dawid P. Hanak, Chunfei Wu
Summary: CO2 capture and utilization (CCU) is seen as a promising approach to reduce carbon emissions in the short to mid-term, but the instability of high-temperature CO2 sorption/desorption limits its potential. Therefore, developing a new sorbent/catalyst system is crucial for ensuring the high efficiency and long-term operation of CCU.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Energy & Fuels
Hossein Beidaghy Dizaji, Thomas Zeng, Hieronymus Hoelzig, Jens Bauer, Gert Kloess, Dirk Enke
Summary: The study investigated ash transformation mechanisms in silica-rich biomass fuels, revealing the impact of impurities on the atomic structure of silica, leading to altered ash melting behavior and viscosity. Chemical water washing, acid leaching, and blending rice straw with rice husk were found to strongly influence the chemical composition of ashes and improve ash melting behavior.
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
Environmental Studies
Seong Hye Son, Hae In Lee, Won Chul Cho, Ui Myung Chung, Ho Won Ra, Sung Min Yoon, Jae Goo Lee, Young Woo Rhee, Myung Won Seo
Summary: Rice husk is a valuable agricultural biomass that can be used to produce high-purity SiO2 and Si. This study conducted a mechanochemical experiment to convert rice husk ash into porous Si using attrition mill and various acid leaching and heat-treatment conditions. The results showed the possibility of using eco-friendly lactic acid instead of harmful hydrochloric acid, the conversion of heat-treated GRHA to Si without acid leaching, and the importance of carbon content in RHA and GRHA for Si conversion.
ENERGY & ENVIRONMENT
(2023)
Article
Energy & Fuels
Yuandong Yang, Zengqiao Chen, Xianda Sun, Shun Yao, Xiaoyu Zhang, Wenqiang Liu
Summary: In recent years, there has been increasing interest in biomass derived Li4SiO4 adsorbent for high-temperature CO2 capture. This study utilized industrial fly ash from biomass boilers to produce Li4SiO4 adsorbent for the first time. Different pretreatment methods were carried out to enhance the performance of the derived adsorbent. The results showed that the industrial biomass fly ash is a feasible source for Li4SiO4 production with a reasonable CO2 adsorption capacity.
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
Engineering, Environmental
Yichao Tong, Changlei Qin, Linyan Zhu, Shuzhen Chen, Zongze Lv, Jingyu Ran
Summary: The huge consumption of fossil fuels leads to excessive CO2 emissions, and its reduction has become an urgent worldwide concern. The combination of renewable energies with battery energy storage, and carbon capture, utilization, and storage are well acknowledged as two major paths in achieving carbon neutrality. This study proposes a route to synthesize low-cost Li4SiO4 as CO2 sorbents from spent LIBs, with verified technical feasibility and evaluated CO2 adsorption/desorption performance. The results demonstrate the superior capacity and cyclic stability of Li4SiO4 synthesized from spent LIBs, and the cost-effective nature of this method.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Review
Chemistry, Physical
Hamisah Ismail, Hasmaliza Mohamad
Summary: There is currently a growing interest in utilizing agricultural waste, with a focus on processing rice husk ash or rice straw ash into biocompatible products used in biomedical implants, leading to the effective conversion of high-value products and reducing environmental pollution.
Article
Energy & Fuels
Long Ma, Shuzhen Chen, Changlei Qin, Susu Chen, Weiyang Yuan, Xu Zhou, Jingyu Ran
Summary: This study investigated the impact of H2S on the adsorption of CO2 using Li4SiO4, finding that the presence of H2S significantly reduces the capture capacity of Li4SiO4, with higher concentrations exacerbating the issue. Additionally, the negative impact of H2S was found to be strongly correlated to the reaction temperature.
Article
Construction & Building Technology
Maelson M. Souza, Marcos A. S. Anjos, Maria V. V. A. Sa
Summary: The study demonstrates the technical feasibility of using scheelite residue and rice husk ash to produce Lightweight Aggregates (LWAs) with significant environmental impacts and favorable properties for LWA development. The manufactured aggregates showed properties at least similar to commercial LWAs, indicating the viability of using SPR and RHA for LWA production.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Qiang Su, Jinming Xu
Summary: The use of glass sand and rice husk ash in concrete production saves natural sand resources and promotes waste recycling. The pozzolanic effect of rice husk ash reduces the alkali-silica reaction caused by glass sand and cement slurry. The addition of glass sand improves tensile strength and cyclic compression performance, while rice husk ash enhances compressive and splitting tensile strength.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Chemical
Guangfan Tan, Liang Cai, Haifeng Xue, Xin Hu, Xiaoxu Dong, Hangyu Jiang, Xiuhong Yang, Yasuhisa Oya, Yingchun Zhang
Summary: This paper presents a simple method combining the wet method and freeze-drying method to fabricate Li4SiO4 sorbent with rich porosity and direction arrangement channels, which overcomes the limitations of previous literature. The freeze-drying Li4SiO4 cylinder (FSC) green sorbents have columnar ice crystals in the interior, and the unidirectional alignment of pore channels can be obtained after vacuum drying, improving CO2 capture capacity. The FSC sorbent shows superior CO2 sorption capacities and outstanding stability, making it a promising candidate for CO2 removal.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Construction & Building Technology
Sk S. Hossain, P. K. Roy, Chang-Jun Bae
Summary: This study reviews the utilization of waste Rice husk ash (RHA) for cleaner production of geopolymer. The effects of RHA on key properties of geopolymer are discussed, with findings suggesting that the incorporation of a moderate amount of RHA can improve the performance of geopolymer, providing a sustainable and environmentally friendly pathway for the construction industry.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)