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1. Cyclones of different sizes and underflow leakage for aerosol particles separation enhancement

Author:
Pan, Jiake; Shen, Qisong; Cui, Xin; Wu, Jiwei; Ma, Liang; Tian, Chengcheng; Fu, Pengbo; Wang, Hualin
Source:
Journal of cleaner production 2021 v.280 pp. 124379
ISSN:
0959-6526
Subject:
aerosols,   etc   ; breathing; centrifugation; chemical industry; cyclone separators; energy conservation; liquids; particulates; pollution; suspension systems;     Show all 10 Subjects
Abstract:
... Aerosol particle (especially PM₂.₅ and PM₁₀) is one of the most serious environmental pollution worldwide and is urging the development of separation technology. Cyclonic centrifugation devoted to the separation of suspension systems whose component have a significant density difference, however, it has been difficult to separate the fine particles whose size are of several microns or sub-micron. ...
DOI:
10.1016/j.jclepro.2020.124379

2. Numerical investigation of deposition mechanism in three mouth–throat models

Author:
Huang, F.; Zhang, Y.; Tong, Z.B.; Chen, X.L.; Yang, R.Y.; Yu, A.B.
Source:
Powder technology 2021 v.378 pp. 724-735
ISSN:
0032-5910
Subject:
aerosols,   etc   ; air flow; breathing; equations; in vitro studies; larynx; lungs; models; mouth; particle size; pharynx; powders; throat; trachea (vertebrates);     Show all 14 Subjects
Abstract:
... Understanding the deposition mechanisms of pharmaceutical aerosol in the mouth-throat (MT) is crucial to developing an in vitro method which aims to better predict in vivo lung deposition. This paper investigated the effect of geometrical variation, particle size and airflow rate on the fine particle deposition in the US pharmacopeia throat (USP), idealized mouth-throat (IMT) and realistic mouth-t ...
DOI:
10.1016/j.powtec.2018.11.095

3. Spatiotemporal PM2.5 variations and its response to the industrial structure from 2000 to 2018 in the Beijing-Tianjin-Hebei region

Author:
Xue, Wenhao; Zhang, Jing; Zhong, Chao; Li, Xinyao; Wei, Jing
Source:
Journal of cleaner production 2021 v.279 pp. 123742
ISSN:
0959-6526
Subject:
aerosols,   etc   ; aerodynamics; air pollution control; clean energy; data collection; industry; models; moderate resolution imaging spectroradiometer; particulates; pollution; sustainable development; China;     Show all 12 Subjects
Abstract:
... The economy has developed rapidly in China during recent decades, especially in the Beijing-Tianjin-Hebei (BTH) region. Environmental problems have thus become increasingly prominent, particularly the presence of fine particulate matter with aerodynamic diameters ≤2.5 μm (PM₂.₅). High-quality and high-resolution PM₂.₅ data is urgently needed. Therefore, based on the newly released Moderate Resolut ...
DOI:
10.1016/j.jclepro.2020.123742

4. Calculation of supersaturation maximum and droplet concentration at cloud boundaries

Author:
Pinsky, Mark; Khain, Alexander
Source:
Atmospheric research 2020 v.234 pp. 104694
ISSN:
0169-8095
Subject:
aerosols,   etc   ; droplets; models;     Show all 3 Subjects
Abstract:
... Most parameterizations of droplet concentration at cloud base in cloud models are derived under the assumption that all droplets at the cloud base form by nucleation of dry CCN crossing the lifting condensation level in updraft. In this study, a novel method of calculation of the supersaturation maximum and droplet concentration at cloud base is described that takes into account the existence of l ...
DOI:
10.1016/j.atmosres.2019.104694

5. Performance and economic analyses of a combined bioreactor for treating odors, volatile organic compounds, and aerosols from a landfill site

Author:
Liu, Jianwei; Lu, Chen; Huang, Lihua; Sun, Jianbin; Yue, Peng; Liu, Xueli; Kang, Xinyue
Source:
Journal of cleaner production 2021 v.278 pp. 124161
ISSN:
0959-6526
Subject:
aerosols,   etc   ; aeration; ammonia; bacteria; biofiltration; bioreactors; chlorides; fungi; gases; hydrogen sulfide; ions; landfills; nitrates; nitrites; odors; operating costs; packaging materials; sulfates; volatile organic compounds; water solubility;     Show all 20 Subjects
Abstract:
... A full-scale combined bioreactor with a biological aeration zone (BAZ) and a biological filtration zone (BFZ) was adopted to treat odors, volatile organic compounds (VOCs), and aerosols emitted from a landfill site. The BAZ mainly relies on suspended microorganisms that degrade substances with high water solubility, while the BFZ is divided into an acidic biofiltration unit (ABU) and a neutral bio ...
DOI:
10.1016/j.jclepro.2020.124161

6. Portable dehumidifiers as an original matrix for the study of inhalable nanoparticles in school

Author:
Silva, Luis F.O.; Pinto, Diana; Enders, Michele S.P.; Hower, James C.; Flores, Erico M.M.; Müller, Edson I.; Dotto, Guilherme L.
Source:
Chemosphere 2021 v.262 pp. 127295
ISSN:
0045-6535
Subject:
aerosols,   etc   ; air; air pollution; air quality; children; cities; climate; cognition; electron microscopy; elementary schools; health hazards; human health; nanoparticles; oxidation; particulates; people; pollutants; social justice; toxicity; vapors;     Show all 20 Subjects
Abstract:
... Good air quality is documented as a significant factor of social justice. The human health hazards associated with air pollution are not distributed equally across cities; the most vulnerable people are more exposed to ambient air as they commute to work and wait for buses or trains at the stations. Aerosols play important roles in atmosphere quality and the climate; their oxidation at the nanosca ...
DOI:
10.1016/j.chemosphere.2020.127295

7. Relationships between cloudiness, aerosol optical thickness, and sunshine duration in Poland

Author:
Bartoszek, Krzysztof; Matuszko, Dorota; Soroka, Jakub
Source:
Atmospheric research 2020 v.245 pp. 105097
ISSN:
0169-8095
Subject:
aerosols,   etc   ; solar radiation; spring; winter; Poland;     Show all 5 Subjects
Abstract:
... The aim of this study is to explain the relationship between changes in the amount of low-level cloudiness, the frequency of occurrence of certain types of clouds, the aerosol optical thickness (AOT) of the atmosphere, and changes in relative sunshine duration in Poland in the years 1980–2018. The analytical part of the study first presents the spatial variability of area-average values of the dis ...
DOI:
10.1016/j.atmosres.2020.105097

8. Quantification of synergistic, additive and antagonistic effects of aerosol components on total oxidative potential

Author:
Guo, Huibin; Fu, Haiyan; Jin, Lei; Huang, Sijing; Li, Xiang
Source:
Chemosphere 2020 v.252 pp. 126573
ISSN:
0045-6535
Subject:
aerosols,   etc   ; copper; iron; manganese; prediction; quinones;     Show all 6 Subjects
Abstract:
... The interaction-based oxidative potential (OPᵢₙₜ) represents the prediction of binary mixture effects distinguishing from linear additivity by including information on binary mixtures among PM components. The objective of this work is to develope a reliable estimate on the possible synergistic or antagonistic possibility of binary PM components and to quantify the combined effect. We firstly asses ...
DOI:
10.1016/j.chemosphere.2020.126573

9. Synthesis of indium oxide microparticles using aerosol assisted chemical vapour deposition

Author:
Alam, Firoz; Lewis, David J.
Source:
RSC advances 2020 v.10 no.38 pp. 22487-22490
ISSN:
2046-2069
Subject:
aerosols,   etc   ; glass; indium; microparticles; optical properties; vapors;     Show all 6 Subjects
Abstract:
... Microparticles of indium oxide (In₂O₃) are deposited on glass substrates at 500 °C using aerosol assisted chemical vapour deposition (AACVD). The structural, morphological and optical properties of the as-deposited particles are reported. ...
DOI:
10.1039/d0ra02678f

10. Study on CCN activity of fission product aerosols (CsI and CsOH) and their effect on size and other properties

Author:
Mishra, Gaurav; Tripathi, S.N.; Saud, T.; Joshi, Manish; Khan, Arshad; Sapra, B.K.
Source:
Atmospheric research 2020 v.236 pp. 104816
ISSN:
0169-8095
Subject:
aerosols,   etc   ; accidents; cesium; databases; hygroscopicity; risk analysis;     Show all 6 Subjects
Abstract:
... This paper discusses the size resolved cloud condensation nuclei (CCN) properties of two cesium bound compounds viz. CsI and CsOH. These properties are important in context of risk analysis and management of probable environmental releases during postulated nuclear reactor accident conditions. If released as fission product aerosols, these particles have potential to act as CCN, when exposed to hu ...
DOI:
10.1016/j.atmosres.2019.104816

11. Comparison of a Spectral Microphysics and a Two-Moment Cloud Scheme: Numerical Simulations of the Cloud-Topped Marine Boundary Layer

Author:
Bott, Andreas
Source:
Boundary-layer meteorology 2020 v.175 no.2 pp. 153-178
ISSN:
0006-8314
Subject:
aerosols,   etc   ; droplets; empirical models; particle size distribution;     Show all 4 Subjects
Abstract:
... A comparison between the spectral microphysics cloud scheme (MiStra) and the parametrized cloud scheme (PaStra) is presented. The main feature of MiStra consists of the treatment of aerosol particles, cloud droplets, and drizzle particles in a joint two-dimensional particle size distribution, whereas PaStra consists of a two-moment scheme for cloud droplets combined with a one-moment scheme for dr ...
DOI:
10.1007/s10546-020-00501-4

12. Experimental Calibration of the Overlap Factor for the Pulsed Atmospheric Lidar by Employing a Collocated Scheimpflug Lidar

Author:
Mei, Liang; Ma, Teng; Zhang, Zhen; Fei, Ruonan; Liu, Kun; Gong, Zhenfeng; Li, Hui
Source:
Remote Sensing 2020 v.12 no.7
ISSN:
2072-4292
Subject:
aerosols,   etc   ; calibration; environmental monitoring; lidar; remote sensing;     Show all 5 Subjects
Abstract:
... Lidar techniques have been widely employed for atmospheric remote sensing during past decades. However, an important drawback of the traditional atmospheric pulsed lidar technique is the large blind range, typically hundreds of meters, due to incomplete overlap between the transmitter and the receiver, etc. The large blind range prevents the successful retrieval of the near-ground aerosol profile, ...
DOI:
10.3390/rs12071227

13. Arctic ship-based evidence of new particle formation events in the Chukchi and East Siberian Seas

Author:
Dall'Osto, M.; Park, Jiyeon; Kim, Joo-Hong; Kang, Sung-Ho; Park, Kihong; Beddows, D.C.S.; Harrison, Roy M.; Yoon, Y.J.
Source:
Atmospheric environment 2020 v.223 pp. 117232
ISSN:
1352-2310
Subject:
aerosols,   etc   ; melting; sea ice; Arctic region;     Show all 4 Subjects
Abstract:
... Arctic aerosol-climate interactions are controlled by multiple factors including sources, processes and removal mechanisms of particles. The Arctic is mostly ocean, surrounded by mostly land, and our understanding of Arctic aerosol processes is incomplete due to scarce measurements carried out in sea ice regions. In particular, it is currently not known if these particular regions are sources of a ...
DOI:
10.1016/j.atmosenv.2019.117232

14. Capturing heavy loading microparticles using electrostatic precipitator with square-wave collecting electrode

Author:
Wen, Tsrong-Yi; Xue, Qing-Zhang
Source:
Powder technology 2020 v.361 pp. 520-528
ISSN:
0032-5910
Subject:
aerosols,   etc   ; air flow; electrodes; microparticles; public health;     Show all 5 Subjects
Abstract:
... Collecting aerosol particles is important in public health viewpoint because aerosol particles have been resulting in million deaths every year. Electrostatic precipitators (ESPs) are widely used to deal with massive particles at a given airflow rate because of several advantages attributed to ESPs' low pressure drop. However, the collection efficiency of an ESP decays quickly when demanding a hig ...
DOI:
10.1016/j.powtec.2019.11.083

15. Experimental study on eliminating fire smokes using acoustic agglomeration technology

Author:
Zhang, Guangxue; Ma, Zhenfang; Shen, Jian; Zhang, Kai; Wang, Jinqing; Chi, Zuohe
Source:
Journal of hazardous materials 2020 v.382 pp. 121089
ISSN:
0304-3894
Subject:
aerosols,   etc   ; acoustics; energy; polystyrenes; soot; transmittance;     Show all 6 Subjects
Abstract:
... Acoustic agglomeration is a process in which an intense sound field is applied to promote relative motion and rapid agglomeration among aerosol particles. This technology is able to improve significantly and rapidly the visibility of the smoke in a fire situation, and therefore assists the quick evacuation of evacuees. In this paper, the elimination effect of polystyrene smoke using acoustic agglo ...
DOI:
10.1016/j.jhazmat.2019.121089

16. Performance evaluation of a tangential cyclone separator with additional inlets on the cone section

Author:
Lim, Jun-Hyung; Park, Su-In; Lee, Heun-Jae; Zahir, Muhammad Zeeshan; Yook, Se-Jin
Source:
Powder technology 2020 v.359 pp. 118-125
ISSN:
0032-5910
Subject:
aerosols,   etc   ; air; cost effectiveness; cyclone separators; powders;     Show all 5 Subjects
Abstract:
... This study installed additional inlets on the cone section of a tangential cyclone separator and examined its effect on collection efficiency and pressure drop. When aerosol was injected through the additional inlets and clean air was injected into the original inlet, the cut-off size of particles decreased, compared to that when injecting aerosol through the original inlet. However, it was reveal ...
DOI:
10.1016/j.powtec.2019.09.056

17. Distribution of aerosol paint droplets in open- and closed-space environments: Towards activity level evaluation

Author:
Falardeau, Mylène; Muehlethaler, Cyril
Source:
Forensic science international 2020 v.306 pp. 110065
ISSN:
0379-0738
Subject:
aerosols,   etc   ; clothing; data collection; droplets; fluorescence; spraying;     Show all 6 Subjects
Abstract:
... One way to determine the presence of a suspect on the scene of graffiti sprayed public territory, is by seeking the presence of aerosol paint droplets transferred to his clothing and accessories. Previous studies have evaluated the distribution of spray paint droplets in closed space, on clothing, and its persistence following washing. Yet, due to the difficulty in observing and counting them unde ...
DOI:
10.1016/j.forsciint.2019.110065

18. Role of droplet size classes on the cloud droplet spectral dispersion as observed over the Western Ghats

Author:
Ansari, Kamran; Pandithurai, G.; Anil Kumar, V.
Source:
Atmospheric research 2020 v.246 pp. 105104
ISSN:
0169-8095
Subject:
aerosols,   etc   ; altitude; droplet size; droplets; monsoon season; water content; India;     Show all 7 Subjects
Abstract:
... The aerosol indirect effects (AIE) on cloud microphysical properties have been studied using ground-based in-situ measurements. Aerosol and cloud microphysical properties were collected from a high altitude site in the Western Ghats region of India, where clouds pass over the surface during South West monsoon. The AIE was estimated using cloud droplet number concentration (AIEₙ) and cloud droplet ...
DOI:
10.1016/j.atmosres.2020.105104

19. On the submicron aerosol distributions and CCN activity in and around the Korean Peninsula measured onboard the NASA DC-8 research aircraft during the KORUS-AQ field campaign

Author:
Park, Minsu; Yum, Seong Soo; Kim, Najin; Anderson, Bruce E.; Beyersdorf, Andreas; Thornhill, Kenneth L.
Source:
Atmospheric research 2020 v.243 pp. 105004
ISSN:
0169-8095
Subject:
aerosols,   etc   ; altitude; hygroscopicity; standard deviation; South Korea; Yellow Sea;     Show all 6 Subjects
Abstract:
... Aerosol and CCN number concentrations, and aerosol size distributions in and around the Korean Peninsula were measured onboard the NASA DC-8 research aircraft during the KORUS-AQ campaign in May and June of 2016. The average and standard deviation values of total aerosol number concentrations (diameter > 10 nm, NCN₁₀) in the boundary layer (below 1 km altitude) over Seoul, the Korean Peninsula, th ...
DOI:
10.1016/j.atmosres.2020.105004

20. Evaluation of the controlled condensation method for flue gas SO3/H2SO4 measurement

Author:
Zuo, Wujun; Zhang, Xiaoyu; Li, Yuzhong; Zhao, Cheng; Dong, Yong
Source:
Fuel processing technology 2020 v.206 pp. 106461
ISSN:
0378-3820
Subject:
aerosols,   etc   ; cooling; filtration; flue gas; sulfur; sulfuric acid; vapors;     Show all 7 Subjects
Abstract:
... Controlled condensation method (CCM) is widely accepted for detecting sulfur trioxide (SO₃)/sulfuric acid (H₂SO₄) in flue gas. However, this method cannot be calibrated accurately because of the absence of the standard gas that contains H₂SO₄ vapor. We attempted to calibrate CCM by adopting another SO₃/H₂SO₄ detection method that has been proven accurate. The following conclusions have been derive ...
DOI:
10.1016/j.fuproc.2020.106461