Journal of Aerosol Science最新文献

{"title":"Numerical simulation of aerosolised medicine delivery through tracheostomy airways","authors":"Monica Gumulya ,&nbsp;Natalie V.E. Anderson ,&nbsp;Ryan Mead-Hunter ,&nbsp;Britta S. von Ungern-Sternberg ,&nbsp;Benjamin J. Mullins","doi":"10.1016/j.jaerosci.2025.106694","DOIUrl":"10.1016/j.jaerosci.2025.106694","url":null,"abstract":"<div><div>The administration of inhaled antibiotics to patients with upper or lower respiratory infections is sometimes conducted via a tracheostomy airway. However, precise dosing via this route remains uncertain, especially in spontaneously breathing paediatric patients. This study uses computational fluid dynamics (CFD) to explore the delivery of aerosolised medicine through an idealised tracheostomy tube, focussing on how droplet size distribution (polydispersity) and breathing flow conditions affect drug delivery efficiency. Unlike previous studies that incorporate elongated inlet and outlet sections to minimise flow disturbances, this work considers the compact geometry of tracheostomy tubes, demonstrating an earlier vortex formation around the inlet, resulting in an increased droplet deposition along the outer wall, closer to the inlet. As a result, the transfer efficiency, <span><math><mrow><mi>η</mi></mrow></math></span> (i.e. mass percentage of particles exiting the tracheostomy tube relative to the inlet rate), which decreases with increasing velocity, is found to be lower than those shown in other studies of 90° pipes. This efficiency further decreases with increased polydispersity of the inlet particles. The proportion of respirable droplets in the outlet stream is strongly influenced by the Mass Median Diameter (MMD) of the inlet. When the inlet MMD is 3.5 μm, the net transfer efficiency of respirable droplets, <span><math><mrow><msub><mi>η</mi><mrow><mi>r</mi><mi>e</mi><mi>s</mi><mi>p</mi><mi>i</mi><mi>r</mi><mi>a</mi><mi>b</mi><mi>l</mi><mi>e</mi></mrow></msub></mrow></math></span>, is 50.3 %, with minimal variation across flow conditions. A lower inlet MMD of 2.2 μm yields higher <span><math><mrow><msub><mi>η</mi><mrow><mi>r</mi><mi>e</mi><mi>s</mi><mi>p</mi><mi>i</mi><mi>r</mi><mi>a</mi><mi>b</mi><mi>l</mi><mi>e</mi></mrow></msub></mrow></math></span> values (64.9–87.7 %), although with greater sensitivity to flow and polydispersity. These findings offer new insights into optimising aerosol drug delivery through tracheostomy airways.</div></div>","PeriodicalId":14880,"journal":{"name":"Journal of Aerosol Science","volume":"191 ","pages":"Article 106694"},"PeriodicalIF":2.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145119717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effects of necking on the optical properties of coated black carbon aggregates","authors":"Aonan He ,&nbsp;Zhenhai Qin ,&nbsp;Jie Luo ,&nbsp;Yupin Sun ,&nbsp;Yuxin Miao ,&nbsp;Qixing Zhang","doi":"10.1016/j.jaerosci.2025.106701","DOIUrl":"10.1016/j.jaerosci.2025.106701","url":null,"abstract":"<div><div>Necking substantially improves the representation of black carbon (BC) morphology. However, recent studies placed more focused on bare BC particles and overlooked that the realistic BC emitted from biomass burning are often thickly coated. This paper investigates the effect of necking on the coated BC optical properties and applies the modified cylindrical connector model for necking and the parameter-tunable algorithm for coating. Results indicate that necking enhances the scattering matrix elements, and its effect increases with coating thickness and fractal dimension. Necking contributes a 10 %–30 % increase in absorption and scattering cross-sections, which is crucial for assessment of the radiative effects of the BC fraction in wildfire smoke. Additionally, necking provides a better explanation for high linear depolarization ratios observed in wildfire smoke. For low fractal dimension cases, necking reduces the lidar ratio. Conversely, necking has a minimal influence on single-scattering albedo.</div></div>","PeriodicalId":14880,"journal":{"name":"Journal of Aerosol Science","volume":"191 ","pages":"Article 106701"},"PeriodicalIF":2.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantification of human aerosol emission by measuring different breathing patterns","authors":"Carl Firle ,&nbsp;Asmus Meyer-Plath ,&nbsp;Dierk-Christoph Pöther ,&nbsp;Peter Kujath","doi":"10.1016/j.jaerosci.2025.106680","DOIUrl":"10.1016/j.jaerosci.2025.106680","url":null,"abstract":"<div><div>The pandemic of SARS-CoV-2 asked for airborne transmission risk assessments in occupational and daily life situations. Some physical activities (singing, wind instrument playing, sport) seem to have higher infection risk than speaking or breathing.</div><div>We conducted an exploratory human study (<em>n</em> = 30; <em>n_female</em> = 13, <em>n_male</em> = 17) that assessed the aerosol emission per breath depending on breathing volume and inspiratory duration. The PExA instrument, “Particles in Exhaled Air 2.1” (PExA AB, Gothenburg, Sweden), was customized to measure inhalation flow rate. The instrument allows to simultaneously quantify breathing volumes and emitted aerosol particle concentrations using a Grimm 11-D aerosol spectrometer with size range 0.31 to &gt;3.42 μm.</div><div>The results revealed a non-linear correlation of emitted aerosol particles on both breathing volume and inspiratory duration (<span><math><mrow><msubsup><mi>R</mi><mi>V</mi><mn>2</mn></msubsup><mo>=</mo><mn>0.55</mn></mrow></math></span>). The logarithmised particle counts exhibit a sigmoidal dependence on breathing volume and a decay-like dependence on inspiratory duration. Error-weighted data fitting was used to determine the parameters of our model function and enables to predict the aerosol emission per breath.</div><div>The interpretation of the aerosol emission data strengthens the theory of bronchiole fluid film burst. It suggests that fluid film burst starts not in respiratory bronchioles as is generally assumed, but in upper bronchioles. The increase of intrathoracic pressure for higher breathing volume leads to dynamic compression of upper and terminal bronchioles, and thus to an increase in particle emission. Its exponential increase that became evident in our data can be explained by the bifurcative branching along the respiratory tree. This interpretation further refines the theory of particle formation in human respiratory tract. Our model provides a functional parametrization as a tool to predict human aerosol emission for a wide range of breathing conditions. It is considered a valuable tool for airborne risk assessments.</div></div>","PeriodicalId":14880,"journal":{"name":"Journal of Aerosol Science","volume":"191 ","pages":"Article 106680"},"PeriodicalIF":2.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145268102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new aerosol respiratory deposition approach: Health risks of metals in aerosols from electronic nicotine delivery systems and heated tobacco products","authors":"Jinho Lee,&nbsp;Wei-Chung Su","doi":"10.1016/j.jaerosci.2025.106709","DOIUrl":"10.1016/j.jaerosci.2025.106709","url":null,"abstract":"<div><div>This study employed a newly developed MALDA-MOUDI approach to investigate the respiratory deposition of Electronic Nicotine Delivery Systems (ENDS) and Heated Tobacco Products (HTP) aerosol and used the resulting data to assess associated health risks. MALDA-MOUDI is a tandem system that integrates the Mobile Aerosol Lung Deposition Apparatus (MALDA) with the Micro-Orifice Uniform Deposit Impactor (MOUDI) to enable effective estimations of the size-dependent deposited mass of inhaled aerosol in major airway regions. The MALDA-MOUDI system covers a wide particle size range, from nanometers to micrometers, making it ideal for comprehensive aerosol exposure research. To study ENDS and HTP aerosol respiratory deposition using MALDA-MOUDI, a series of laboratory experiments was conducted to obtain the deposited mass of ENDS and HTP aerosol in human airways. Two types of ENDS and one HTP (JUUL, disposable, and IQOS) were used in the study to generate test aerosol. MALDA-MOUDI respiratory deposition experiments were carried out under both active (mainstream) and passive (secondhand) exposure conditions. Metal-induced health risks were systematically evaluated based on the measured respiratory deposited mass under presumed active and passive use scenarios. The acquired results indicated that non-cancer and cancer risks associated with metals released from the tested ENDS and HTP fell within acceptable levels for both active and passive use scenarios. The MALDA-MOUDI system is a valuable tool for aerosol respiratory deposition studies and can be applied to broader environmental and occupational aerosol exposure research to assess health risks associated with toxic substances in aerosol particles.</div></div>","PeriodicalId":14880,"journal":{"name":"Journal of Aerosol Science","volume":"191 ","pages":"Article 106709"},"PeriodicalIF":2.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145417619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Computational and experimental investigation of an aerosol extraction device for use in dentistry” [J. Aerosol Sci. 183 (2025) 106478]","authors":"Vahid Goodarzi Ardakani ,&nbsp;Mojtaba Dorri ,&nbsp;Bin Zang ,&nbsp;Angela H. Nobbs ,&nbsp;Stephen Cross ,&nbsp;Alberto M. Gambaruto","doi":"10.1016/j.jaerosci.2025.106717","DOIUrl":"10.1016/j.jaerosci.2025.106717","url":null,"abstract":"","PeriodicalId":14880,"journal":{"name":"Journal of Aerosol Science","volume":"191 ","pages":"Article 106717"},"PeriodicalIF":2.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145568308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Operation of a variable saturation condensation particle sizer with 2-propanol, ethanol, methanol, and propylene glycol: Resolution and delay time versus volatility","authors":"M. Attoui ,&nbsp;J. Fernandez de la Mora ,&nbsp;F. Carbone","doi":"10.1016/j.jaerosci.2025.106662","DOIUrl":"10.1016/j.jaerosci.2025.106662","url":null,"abstract":"<div><div>The variable saturation condensation particle sizer (VSCPS) of Gallar et al. (2006) determines a condensation (Kelvin) diameter by scanning over the saturation ratio at fixed instrument temperatures, sample flow rate, and total sheath flow rate. This is achieved by mixing a saturated and a dry stream while scanning over the dry/wet flow rate ratio. Previous studies with this VSCPS have used n-butanol and Fluorinert™ FC-43. A slightly modified form of the instrument is tested here with polyethylene glycol particles 3–9 nm in diameter and four working fluids: Propylene Glycol (PG), 2-propanol, ethanol, and methanol. The latter three give steep activation curves (<em>FWHM</em>∼ 2 %). However, this steepness depends on the quality of the bipolar electrospray used to produce monodisperse seed particles. Nevertheless, methanol yields the narrowest activation curves at all sizes studied, especially the smallest ones. All liquids tested except methanol show a widening of the activation curve at diminishing particle diameters, in qualitative agreement with classical heterogeneous nucleation theory with perfect wetting. The response time depends strongly on working fluid volatility (7.8 s for PG; 1.2 s for methanol), apparently due to the time required to dry the condensate film deposited on the wall of the thermal insulator separating the saturator from the condenser.</div></div>","PeriodicalId":14880,"journal":{"name":"Journal of Aerosol Science","volume":"190 ","pages":"Article 106662"},"PeriodicalIF":2.9,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144781100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Secondary droplet breakup of impaction-pin nozzle: Comparison between experimental and CFD-DPM modelling","authors":"Saima Bukhat Khan ,&nbsp;Joel Alroe ,&nbsp;Chris Medcraft ,&nbsp;Emilie Sauret ,&nbsp;Daniel Harrison ,&nbsp;Zoran Ristovski","doi":"10.1016/j.jaerosci.2025.106664","DOIUrl":"10.1016/j.jaerosci.2025.106664","url":null,"abstract":"<div><div>Spray systems play a crucial role in various industrial and environmental applications, where precise control over droplet size is critical for achieving efficiency. Despite extensive studies on primary breakup, which involves the disintegration of liquid jets or sheets into droplets, the dynamics of secondary breakup, where droplets fragment post-formation, remain less understood. In environmental applications, among various nozzles, impaction-pin nozzles have enabled the production of fine misting droplets at micron and submicron levels. One of the applications of these impaction-pin nozzles is to produce an artificial fog using high pressure seawater to shade corals, a technology under investigation within the Reef Restoration and Adaptation (RRAP) program. This study aims to model and characterise the secondary breakup dynamics in impaction-pin nozzles using a combined numerical and experimental approach. Simulations are performed using Discrete Phase Model (DPM) to model droplet dynamics and size distribution, leveraging its efficiency and accuracy for dispersed-phase tracking. The numerical model incorporated stochastic breakup, coalescence, and evaporation models within Euler-Lagrangian framework, alongside unsteady RANS modelling for gas-phase flow. Experimental validation was performed using a Scanning Electrical Mobility Sizer (SEMS) and an Aerodynamic Particle Sizer (APS), ensuring high-resolution particle size measurements particularly at micron and submicron levels. The impaction-pin nozzle (<em>MeeFog IP-2115-08</em>) used in this study atomised seawater droplets under controlled conditions. Both the experiment and simulations yielded similar log-normal distributions of dry particle sizes upon evaporation. The mean diameter for numerical CFD distribution was 322.4 nm with humidified distribution at 51 % of relative humidity had mean of 236.3 nm and initial dry particles at 675.1 nm, keeping the ranges within the experimental and numerical errors. The model also predicted the spatial distribution of droplets and spray characteristics with experimental visualisation, such as angle variation during spray development, which correlated well with experimental observations. This work provides valuable insights into secondary breakup dynamics and offers a validated framework for optimizing impaction-pin nozzle spray systems for applications requiring precise droplet size control.</div></div>","PeriodicalId":14880,"journal":{"name":"Journal of Aerosol Science","volume":"190 ","pages":"Article 106664"},"PeriodicalIF":2.9,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144780996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and characterization of a modular tunable ring electrode aerosol charge conditioner","authors":"Markus D. Petters ,&nbsp;Sanghee Han ,&nbsp;Sunandan Mahant","doi":"10.1016/j.jaerosci.2025.106670","DOIUrl":"10.1016/j.jaerosci.2025.106670","url":null,"abstract":"<div><div>A tunable ring electrode aerosol charge conditioner is introduced. Bipolar ions are created by means of radioactive decay. The device creates a stream of unipolar ions by separating positive and negative ions using an axial electric field with electric field strengths up to 2 kV cm⁻¹. Varying the electric field strength enables changing the charge conditioner output from bipolar (<em>V</em> = 0) to unipolar for positively charged particles (<em>V</em> &gt; 0) or negatively charged (<em>V</em> &lt; 0). The steady-state ion field and aerosol charge distributions are predicted using a numerical model. Charge conditioner performance is characterized using tandem differential mobility analyzer measurements. Results show that the mean charge per particle increases approximately logarithmically with the applied DC voltage. There is good agreement between model-predicted and observed charge distributions over a wide range of DC voltages and particle sizes. The design is open hardware providing an adaptable platform that can be used as a starting point to modify the charge conditioner design to optimize performance for specific applications.</div></div>","PeriodicalId":14880,"journal":{"name":"Journal of Aerosol Science","volume":"190 ","pages":"Article 106670"},"PeriodicalIF":2.9,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144907994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aerosol discharge velocity and particle size characteristics of a low powered e-cigarette by phase Doppler anemometer","authors":"Mohammad Shajid Rahman,&nbsp;Tarik Kaya,&nbsp;Edgar Matida","doi":"10.1016/j.jaerosci.2025.106672","DOIUrl":"10.1016/j.jaerosci.2025.106672","url":null,"abstract":"<div><div>Electronic cigarettes, also known as e-cigarettes, may have become a tool to improve smoking cessation due to their ability to provide nicotine at a selected rate. However, caution still needs to be taken when using e-cigarettes due to the presence of addictive nicotine and harmful substances, produced from the heating process of aerosolization. The aerosol particle size distribution (PSD) and associated velocities generated by e-cigarettes have significant influence on aerosol deposition in different regions of human respiratory tracts. Due to the importance regarding inhalation risk reduction, deeper understanding of particle velocity and size characteristics of e-cigarettes demands thorough investigation. However, comprehensive study on PSD and velocity of e-cigarettes with a standard testing condition at relatively low heating powers (e.g., power &lt;10 W), which are beneficial considering a reduced emission of toxic chemicals, is still lacking. On another note, while different dilution methods can mislead the comparison and assessment of device performances, data about particle size and velocity of undiluted e-cigarette aerosols are scarce. The present study aims to measure particle number count and size distribution of undiluted aerosols of a latest fourth-generation e-cigarette at a low power of 2.5 W. Temporal and spatial growth of particle velocity and size distribution of an aerosol flow are examined using a phase Doppler anemometry (PDA) technique. To the authors’ best knowledge, application of PDA in e-cigarette aerosol measurement is rarely reported. Velocity measurement revealed a time duration of optimum heating operation for the atomizer. The centerline mean velocity decay of the aerosol discharge suggested a limited mixing and entrainment characteristic compared to a typical air/water jet due to the presence of aerosol particles in the flow region. The particle interactions and collisions in the aerosol flow field possibly increased the centerline turbulence intensity level compared to a canonical free laminar jet. The particle size measurement depicted a continuous increase in particle diameters during a puff period due to potential volatility of e-liquid, and vigorous aerosolization and particle coagulation processes. Spatial evolution of arithmetic mean diameter, count median diameter, and geometric standard deviation of aerosol discharge along the flow centerline and transverse direction are reported. Based on these results, moisture absorption of hygroscopic aerosols, particle evaporation, and particle size re-distribution phenomena are explained as the flow propagated downstream. This present study makes an important contribution to the advancement and optimization of aerosol-generating devices. Also, this study has potential implications in PSD simulation and validation of aerosol dosimetry models.</div></div>","PeriodicalId":14880,"journal":{"name":"Journal of Aerosol Science","volume":"190 ","pages":"Article 106672"},"PeriodicalIF":2.9,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An optimized current-controlled electrostatic charging water system for enhanced aerosol removal in Fukushima decommissioning","authors":"Antoine Guette ,&nbsp;Zeeshan Ahmed ,&nbsp;Ruicong Xu ,&nbsp;Avadhesh Kumar Sharma ,&nbsp;Ravinder Kumar ,&nbsp;Ryo Yokoyama ,&nbsp;Shuichiro Miwa ,&nbsp;Shunichi Suzuki ,&nbsp;Koji Okamoto","doi":"10.1016/j.jaerosci.2025.106671","DOIUrl":"10.1016/j.jaerosci.2025.106671","url":null,"abstract":"<div><div>The decommissioning of Fukushima Daiichi nuclear reactors generates submicron radioactive aerosol particles (0.1–1 μm) during fuel debris cutting, necessitating efficient removal to ensure safety. Previous studies show that conventional aerosol removal systems relying on short-range van der Waals forces are less efficient than charged sprays. In these systems, droplets carry net charges (typically 0.1–1 mC/kg) whose polarity can attract neutral or oppositely charged particles via long-range Coulombic forces. Removal efficiency depends on droplet charge magnitude and polarity, as well as particle properties such as size, conductivity, and pre-existing charge. Submicron particles (&lt;1 μm) are influenced by induced-dipole interactions, while larger particles (&gt;1 μm) undergo Coulombic acceleration toward highly charged droplets. Building on these advancements, this study introduces a novel constant current charging system, integrated with the Jacob's Ladder concept, to improve aerosol scavenging performance. Experiments conducted in the UTARTS (University of Tokyo Aerosol Removal Test with Sprays) facility systematically evaluate the efficacy of the constant current setup compared to previous constant voltage systems, alongside the effects of water properties, such as conductivity, pH, and salinity, on removal efficiency. Additionally, the impact of optimized electrode placement within the spray system on enhancing the electric field and particle capture was investigated. Results demonstrate that the constant current system provides superior aerosol removal efficiency, attributed to stable particle charging and intensified electrostatic interactions. Notably, the placement of two copper wires within the water spray direction further enhanced removal efficiency by intensifying the electric field around the aerosol particles. Furthermore, increasing salinity while maintaining constant pH decreases removal efficiency by lowering system resistance, resulting in faster electron movement and inadequate droplet charging. The novel constant current charging spray system demonstrates improved aerosol removal efficiency, offering a significant advancement in aerosol removal strategies for nuclear decommissioning.</div></div>","PeriodicalId":14880,"journal":{"name":"Journal of Aerosol Science","volume":"190 ","pages":"Article 106671"},"PeriodicalIF":2.9,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}