Article
Engineering, Multidisciplinary
Mohamed Sofiane Bendilmi, Thami Zeghloul, Zehira Ziari, Karim Medles, Lucian Dascalescu
Summary: This study investigates the distribution of electric charges on dielectric materials after exposure to corona discharge and explores methods to maximize their uniformity. Modifying the electrode system parameters and applied voltage can achieve high levels of uniformity.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2022)
Article
Engineering, Chemical
Qun Zhou, Xiaotao Bi, Peng Zhang, Jiawei Hu, Cai Liang, Xiaoping Chen, Jiliang Ma
Summary: The charging characteristic of a binary mixture of polyethylene particles was studied by examining the effect of various factors such as particle size, initial charge-to-mass ratio, wall material, and size ratio. The results showed that large particles tend to acquire positive charges while small particles gain negative charges. Increasing the initial charge-to-mass ratio of small particles and decreasing the size ratio reduce the positive charge level of large particles. The type of wall material also influences the charge-to-mass ratio of large particles. The study determined the magnitude and direction of charge transfer in particle-particle and particle-wall collision processes based on single-particle collisional charging experiments.
Article
Engineering, Chemical
Chengyuan Liu, Qingyue Wang
Summary: Corona electrostatic separation technology can effectively remove inorganic materials from coal, improve coal quality, and reduce air pollution. The performance in cleaning medium-ash, high-sulfur coal can be significantly improved by optimizing process parameters and adding a second stage beneficiation step.
Article
Engineering, Multidisciplinary
Imed Eddine Achouri, Gontran Richard, Thami Zeghloul, Karim Medles, Mohamed Fodil Boukhoulda, Lucian Dascalescu
Summary: The study focused on developing and optimizing a tribocharger design for the efficient electrostatic separation of granular plastics wastes. Experimental analyses were conducted to evaluate the effects of different material cylinders on charge acquisition and determine the optimal conditions of rotation speed and inclination angle for the tribocharging process.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2021)
Article
Engineering, Chemical
Xiaoyang He, Gengbo Ren, Chao Huang, Ning Zhang, Youshan Sun
Summary: Wet electrostatic agglomeration (WEA) is a promising method for fine particle removal. This study established a novel WEA process based on a water film and investigated its removal efficiency and mechanism. The spike plate as the discharge electrode showed better agglomeration performance due to its stronger electric field. The corrosion-resistant PVC plate, after surface modification, could improve the water distribution effect and function as well as the wet metal plate. The mechanism of the water film enhanced WEA process was attributed to the high-voltage electric field promoting water film evaporation and increasing humidity, leading to liquid bridge forces between particles.
PARTICULATE SCIENCE AND TECHNOLOGY
(2023)
Article
Physics, Applied
Jianfeng Zhang, Gangjin Chen, Xiaoli Gao
Summary: Corona-charged melt-blown polypropylene (MBPP) electret fabrics show potential for various applications. This study reports the phenomenon of surface electrostatic field polarity change in corona-charged MBPP electret fabrics. Different charging conditions lead to different electrostatic field distribution modes, and a plasma sheath-based charging mechanism is proposed. The electrostatic field polarity of MBPP fabrics is determined by the origin location and thickness of the plasma sheath, which are affected by charging conditions.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Jing Li, Chao Xu, Jinlin Long, Zhengxin Ding, Rusheng Yuan, Zhaohui Li
Summary: This study demonstrates that the separation performance of Ti3C2Tx-MXene lamellar nanofiltration membranes can be modulated by applying external electrostatic fields. The filtration performance of the membranes on cationic and anionic dyes can be improved or declined depending on the polarity of the electric field. The regulation mechanisms are discussed, which are likely attributed to the changes in electrostatic interactions induced by the external electric field.
ACS APPLIED NANO MATERIALS
(2022)
Article
Electrochemistry
Linsheng Huang, Ziyan Dong, Changhao Wu, Yue Ma, Limin Ruan, Wei Zeng, Siliang Wang, Yi Xiong, Chao Xu, Dong Liang
Summary: A wireless electrostatic induction strategy is developed to activate carriers in MXene-based electrochemical supercapacitors, resulting in a higher energy capacity. The native carriers are effectively excited in porous MXene material, metallic foil substrate, and ionic electrolyte under atmospheric electric field, leading to an energy capacity of 541.6 F g(-1), which is significantly higher than the traditional wire conductive charge of 258.5 F g-1.
ELECTROCHIMICA ACTA
(2023)
Article
Energy & Fuels
Peng Sun, Hen Zhang, Fa-Chao Jiang, Zhi-Zhu He
Summary: This paper presents a novel self-driven liquid metal cooling connector technology for high power DC charging, which effectively reduces temperature rise of the charging connector, improving safety and durability.
Article
Green & Sustainable Science & Technology
Jerzy Labaj, Leszek Blacha, Maciej Jodkowski, Albert Smalcerz, Maria Frohlichova, Robert Findorak
Summary: The research results indicate that pellets made from waste flotation concentrate can replace traditional quick coke for processing high-copper slags, achieving a copper removal yield of 98%. The compositions of the copper-lead-iron alloys and slags obtained meet the limits typically observed for industrial-scale processing. The processed waste slag can be used for road making and in the building industry, offering a cost reduction of up to 50% compared to commonly used carbon-based reducing agents.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Nanoscience & Nanotechnology
M. I. A. Abdel Maksoud, Mohamad Bekhit, A. L. Waly, A. S. Awed
Summary: A rod-like shape of Cu/Cu2O nanoparticles was synthesized using gamma radiation and dispersed in different concentrations in a PVC matrix. XRD and SEM confirmed the formation of crystalline phases and the rod shape of the nanoparticles. The optical band gap decreased and the electrical conductivity improved with the increase in Cu/Cu2O content in PVC, making the nanocomposite films suitable for energy storage applications.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2023)
Article
Engineering, Electrical & Electronic
Mohamed E. Ibrahim, Mahmoud A. Taman, Mohamed A. Izzularab, Amr M. Abd-Elhady
Summary: Electric cables are crucial in transmission and distribution systems, with polyvinyl chloride (PVC) being widely used as cable insulation. This study investigates the effects of external electric fields on the dielectric properties of PVC nanocomposites filled with nanosized ZnO and MgO particles. The results show that the external electric field decreases relative permittivity and dielectric loss, while increasing the breakdown strength of PVC NC. Furthermore, applying a horizontal electric field during sample preparation yields better improvement in the dielectric properties compared to a vertical electric field.
ELECTRICAL ENGINEERING
(2023)
Article
Construction & Building Technology
Laid Karboua, Melik Bekhiti, Rebih Zaitri
Summary: This research aims to predict the mechanical properties of clayey soil using mix design approach. The study found a good correlation between bentonite, polyvinyl chloride (PVC), cement and the mechanical responses. The results showed that PVC waste can be utilized to improve the mechanical behavior of clay soils and assess the values of maximum dry density, cohesion, and compressive strength of mixtures not made in the laboratory.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Thermodynamics
Omkar Mypati, Tariq Anwaar, Desham Mitra, Surjya Kanta Pal, Prakash Srirangam
Summary: This study describes the sustainability of busbars in lithium-ion batteries and investigates the changes in process parameters of friction stir welded (FSW) samples at different electrical conductivity levels. The results show that the electrical conductivity varies with the formation of intermetallic compounds and changes in grain size at the Al-Cu joint.
APPLIED THERMAL ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Yu Gao, Zheng Song, Jing Li, Jinjing Peng, Xuri Xu
Summary: This paper investigates the transient process of negative DC corona generated with a needle to plane electrode covered by a polymer film using numerical simulation. The results show that during the corona process, the dominant positive ions are O2(+), O4(+) and N4(+), and the charge accumulation region expands along the radial direction. The mean electron energy distribution on the polymer surface varies with time and eventually stabilizes.
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION
(2021)