Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.1
2.9
Journals
Atmosphere
Special Issues
Electrostatics of Atmospheric Aerosols
share announcement

Electrostatics of Atmospheric Aerosols

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Aerosols".

Deadline for manuscript submissions: closed (1 December 2023) | Viewed by 6627

Special Issue Editors

Dr. Mamadou Sow

E-Mail Website
Guest Editor
Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSN-RES, SCA, 91192 Gif-sur-Yvette, France
Interests: airborne resuspension; particle adhesion; electrostatics; aerosol physics; aerosol metrology
Special Issues, Collections and Topics in MDPI journals
Dr. Noureddine Zouzou

E-Mail Website
Guest Editor
Institut Pprime, CNRS Université de Poitiers, ISAE-ENSMA, cédex 9, 86073 Poitiers, France
Interests: electrical engineering; electrostatics; high voltage; electro-hydro-dynamics; aerosol physics; electrostatic devices
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The overarching goal of this Special Issue is to provide the most recent research advances regarding the effect of electrostatic phenomena on the behavior of atmospheric aerosols. These aerosols have different natural and anthropogenic sources and cover a large size spectrum, ranging from a few nanometers to a few micrometers. They play a crucial role in climate change by interacting with solar radiation, cloud formation and precipitation, human health when reaching human respiratory pathways, and the transfer of nutrients in terrestrial and marine ecosystems. Electrical effects are ubiquitous throughout the entire life cycle of atmospheric aerosols, from emission sources to transport and dry or wet removal. As an example, the appearance of strong electric fields during dust/sand mobilization, which is related to particle tribocharging and vertical stratification, is widely documented in the literature. It was also recognized that atmospheric aerosol coagulation during their transport and subsequent deposit is influenced by their charges and interactions with atmospheric bipolar ions. To date, the contribution of electrostatic phenomena is rarely considered in models of emission, transfer or the deposition of atmospheric aerosols. The subject covers original experimental field and laboratory studies, as well as numerical simulations or review papers, which focus on the influence of electrostatic charges, electric field and atmospheric ions on the atmospheric aerosol cycle: airborne suspension, transport coagulation and deposit. This subject also extends to extra-terrestrial environments, issues of solar panel performances and non-contact electric cleaning developments.

Dr. Mamadou Sow
Dr. Noureddine Zouzou
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atmosphere is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • atmospheric aerosols
  • electrostatics
  • electric field
  • bipolar ions
  • emission
  • transport
  • deposition
  • surface cleaning

Published Papers (5 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

9 pages, 4579 KiB  
Communication
Charged Atmospheric Aerosols from Charged Saltating Dust Aggregates
by F. Chioma Onyeagusi, Christian Meyer, Jens Teiser, Tim Becker and Gerhard Wurm
Atmosphere 2023, 14(7), 1065; https://doi.org/10.3390/atmos14071065 - 24 Jun 2023
Cited by 2 | Viewed by 867
Abstract
Grain collisions in aeolian events, e.g., due to saltation, result in atmospheric aerosols. They may regularly be electrically charged, but individual charge balances in collisions including small grains are not easily obtained on the ground. We therefore approach this problem in terms of [...] Read more.
Grain collisions in aeolian events, e.g., due to saltation, result in atmospheric aerosols. They may regularly be electrically charged, but individual charge balances in collisions including small grains are not easily obtained on the ground. We therefore approach this problem in terms of microgravity, which allows for the observation of collisions and the determination of small charges. In a drop tower experiment, ∼1 mm dust aggregates are traced before and after a collision within the electric field of a plate capacitor. The sum of the electric charge of two particles (total charge) before and after the collision often strongly deviates from charge conservation. Due to the average low collision velocities of 0.2 m/s, there is no large scale fragmentation. However, we do observe small charged particles emerging from collisions. The smallest of these particles are as small as the current resolution limit of the optical system, i.e., they are at least as small as tens of µm. In the given setting, these small fragments may carry 1 nC/m2–1 µC/m2 which is between 1% and ten times the surface charge density of the large aggregates. These first experiments indicate that collisions of charged aggregates regularly shed charged grains into the atmosphere, likely down to the suspendable aerosol size. Full article
(This article belongs to the Special Issue Electrostatics of Atmospheric Aerosols)
►▼ Show Figures

Figure 1

12 pages, 3685 KiB  
Article
Mechanics of Particle Motion in a Standing Wave Electric Curtain: A Numerical Study
by Hana Bechkoura, Noureddine Zouzou and Miloud Kachi
Atmosphere 2023, 14(4), 681; https://doi.org/10.3390/atmos14040681 - 4 Apr 2023
Viewed by 1162
Abstract
Electrostatic curtains can be simple and yet efficient devices to manipulate micronized particles on flat surfaces. This paper aims to investigate the motion of a 60 µm dielectric particle on the surface of a standing-wave conveyor. The study is based on a numerical [...] Read more.
Electrostatic curtains can be simple and yet efficient devices to manipulate micronized particles on flat surfaces. This paper aims to investigate the motion of a 60 µm dielectric particle on the surface of a standing-wave conveyor. The study is based on a numerical model that accounts for the many forces that could potentially influence the particle motion. For that purpose, a numerical calculation of electric field and particle movement was carried out. The particle position above the curtain surface is obtained by a resolution of the dynamic equations using the Runge–Kutta method. The electric field distribution in the space above the curtain is obtained by a finite element calculation of the Laplace equation. The simulation results demonstrated a net dependence of the particle trajectory and movement modes on applied voltage frequency. Overall, low frequencies, typically below 50 Hz, allow for higher levitation and better displacement of the particle over long distances. Conversely, higher frequencies significantly reduce levitation and displacement distance. Moreover, at higher frequencies (around 500 Hz), the particle can vibrate between electrodes without any displacement at all. It is then inferred that low frequency is needed to better carry particles using a standing-wave curtain. Full article
(This article belongs to the Special Issue Electrostatics of Atmospheric Aerosols)
►▼ Show Figures

Figure 1

9 pages, 1066 KiB  
Article
Study on Gas Flow Parameters and Fractional Removal Efficiency of Ultrafine Particulate Matter in Newly Developed Electro Cyclone-Filter
by Aleksandras Chlebnikovas and Artūras Kilikevičius
Atmosphere 2023, 14(3), 527; https://doi.org/10.3390/atmos14030527 - 9 Mar 2023
Viewed by 1338
Abstract
The treatment of polluted industrial flow remains a relevant topic for the purpose of sustainable development and improvement of the general state of the environment. The removal of particulate matter, and especially their fine and ultra-fine fractions, from the gas flow, is an [...] Read more.
The treatment of polluted industrial flow remains a relevant topic for the purpose of sustainable development and improvement of the general state of the environment. The removal of particulate matter, and especially their fine and ultra-fine fractions, from the gas flow, is an urgent task, but it poses many challenges and demands for purification technology. This paper presents the results of the first stage of the research using a newly developed cleaning device operating by a complex principle, which consists of a new generation two-stage centrifugal filtration device and an electro-filter. The rate of air flow was varied from 0.3 to 1.16 m/s at the inlet and corresponds to an air flow yield of 53 m3/h to 205 m3/h. The maximum pressure drop at an air flow of 255 m3/h is 26 Pa. Research has shown that the efficiency of removing ultra-fine particulate matter is up to 99.7% for particles 0.3–0.5 µm in size at 200 m3/h of the air flow rate. Full article
(This article belongs to the Special Issue Electrostatics of Atmospheric Aerosols)
►▼ Show Figures

Figure 1

13 pages, 4199 KiB  
Article
Optimization of Discharging Electrodes of a Multi-Chamber Electrostatic Precipitator for Small Heat Sources
by Michal Holubčík, Juraj Drga, Nikola Čajová Kantová, Jan Najser and Jaroslav Frantík
Atmosphere 2023, 14(1), 63; https://doi.org/10.3390/atmos14010063 - 29 Dec 2022
Cited by 2 | Viewed by 1408
Abstract
On the way to reducing emissions released into the atmosphere, there is an obstacle in the form of the emissions of solid pollutants produced by households, namely the burning of solid fuels in small heat sources. In this article, the authors deal with [...] Read more.
On the way to reducing emissions released into the atmosphere, there is an obstacle in the form of the emissions of solid pollutants produced by households, namely the burning of solid fuels in small heat sources. In this article, the authors deal with the development of a low-cost electrostatic precipitator, which would be able to significantly reduce the production of particulate matter. This is a tubular precipitator concept, which is enhanced by dividing the precipitation space into four chambers, each of which has an ionization electrode. With the investigated structural arrangement, it is possible to increase the size of the collection area without affecting the external dimensions of the separator. The essence of this article was to focus on the design of an ionization electrode, which, in addition to the function of a negative electrode, would also fulfill the function of a structural element of the proposed geometry. The work contains a technical design for the shape of the ionization electrode, which was subsequently examined using ANSYS Fluent software. The conditions under which a corona discharge will occur on the electrodes and how particulate matter is captured in the separation device were investigated with the help of simulations of the electric field intensity. According to the achieved simulation results, calculations were made for the theoretical efficiency of particle collection, which reached a value of approximately 78%. Full article
(This article belongs to the Special Issue Electrostatics of Atmospheric Aerosols)
►▼ Show Figures

Figure 1

10 pages, 1550 KiB  
Article
Decreasing Solid Aerosols from Small Heat Sources Using the Optimized Electrostatic Precipitator
by Michal Holubčík, Nikola Čajová Kantová, Juraj Trnka and Jozef Jandačka
Atmosphere 2022, 13(9), 1438; https://doi.org/10.3390/atmos13091438 - 6 Sep 2022
Cited by 3 | Viewed by 1107
Abstract
Air quality and air pollution are important issues, and thus it is necessary to look at possibilities for how to decrease emissions in the atmosphere affordably and effectively. This article focuses on solid aerosols, specifically particulate matter, and the design of a low-cost [...] Read more.
Air quality and air pollution are important issues, and thus it is necessary to look at possibilities for how to decrease emissions in the atmosphere affordably and effectively. This article focuses on solid aerosols, specifically particulate matter, and the design of a low-cost solution for their decrease in the atmosphere. The mass concentration of particulate matter with the proposed optimized electrostatic precipitator was measured and compared with measurement without its implementation. Based on the results, it can be concluded that the designed ESP type could catch approximately 71% of solid particles. However, the real ability to capture particulate matter could be expected to be approximately 50–60% due to possible clogging, irregular cleaning and maintenance under normal conditions. Further, the article deals with the application of the village model with this type of electrostatic precipitator in households. Based on this model, the production of particulate matter would be reduced from 12.24 t/year to 6.12 t/year considering 50% separation efficiency and to 5.25 t/year considering 60% separation efficiency by the application to all heat sources for burning solid fuels for all emission classes. However, the reduction in particulate matter would be lower in real conditions. Full article
(This article belongs to the Special Issue Electrostatics of Atmospheric Aerosols)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-5
Back to TopTop