Aerosol Science and Engineering最新文献

{"title":"Burning of Municipal Solid Waste: An Invitation for Aerosol Black Carbon and PM2.5 Over Mid–Sized City in India","authors":"Dilip Kumar Mahato,&nbsp;Tapan Kumar Sankar,&nbsp;Balram Ambade,&nbsp;Faruq Mohammad,&nbsp;Ahmed A. Soleiman,&nbsp;Sneha Gautam","doi":"10.1007/s41810-023-00184-7","DOIUrl":"10.1007/s41810-023-00184-7","url":null,"abstract":"<div><p>Waste management is the main concern of most cities in developing countries. The proper procedure is needed to reduce Municipal solid waste, that’s why burning is the cheaper way to decrease solid waste. The main aim of this study is to assess the concentration of Black Carbon and PM_2.5 during the MSW burning sites in Jamshedpur. The continuous measurement was taken during the burning period in three phases at Industrial, Urban, and Rural waste burning sites having respective average BC concentrations observed as 145 ± 46, 101 ± 33 &amp; 95 ± 33 μg m⁻³, and PM_2.5 as 1391 ± 358, 998 ± 319, 957 ± 313 μg m⁻³. BC and PM_2.5 concentrations show significant diurnal variations with maximum average concentration at the midnight phase due to large temperature fluctuation (lower mixed layer height) in the atmosphere. This evaluation during burning period exceeds regular day estimates by around 5–6 times. The rate distinction of BC by the Aethalometer model indicates that source apportionment of BC is more sensitive in assessing BC_BB (biomass burning) with an average fraction of 82% at 880 nm because waste trash burning in the dump yard was mostly solid. Pearson correlation analysis shows strong correlations between BC and PM_2.5 concentration that is primarily attributable to well-known nearby sources such as vehicular emissions.</p></div>","PeriodicalId":36991,"journal":{"name":"Aerosol Science and Engineering","volume":"7 3","pages":"341 - 354"},"PeriodicalIF":1.4,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50103043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Investigating the Impression of National Clean Air Programme in Enhancement of Air Quality Characteristics for Non-attainment Cities of Uttarakhand","authors":"Ankur Kansal,&nbsp;Sarada Prasannan Subuddhi,&nbsp;Prashant Pandey,&nbsp;Deepak Gupta,&nbsp;Tarangini Rawat,&nbsp;Alok Sagar Gautam,&nbsp;Sneha Gautam","doi":"10.1007/s41810-023-00181-w","DOIUrl":"10.1007/s41810-023-00181-w","url":null,"abstract":"<div><p>Developmental activities have become sweet poison nowadays. Such activities degrade local air quality status, which can severely impact human health and their surrounding environment. The present study examines Uttarakhand’s air quality characteristics in non-attainment cities (Dehradun, Rishikesh, and Kashipur) to understand its cleansing processes. Under National Air Quality Monitoring Programme (NAMP), concentration of air pollutants (such as PM, SO_x and NO_x) was regularly monitored between 2015 and 2019 to evaluate the air quality status in the state. The NAMP highlights the higher concentration of PM₁₀ in Dehradun, Rishikesh, and Kashipur, and hence it is imperative to reduce the concentration of PM₁₀ under the permissible limit. State has 30.2% urbanisation rate, and annual urban growth rate of 4.0% much higher than the rural growth rate (1.2%) of the state, which results in 3 times higher amount of PM₁₀ to the permissible limit. Moreover, 1.5–2-time higher amount of PM₁₀ were recorded in Rishikesh, and Kashipur. In making sustainable future, various sector-specific strategies and sustainable approaches under National Clean Air Programme (NCAP) were launched to combat this critical situation. While comparing with the present air quality status, Dehradun experienced 12% reduction in PM₁₀; whereas for Rishikesh and Kashipur, only 4.1% and 0.866% reduction were observed. The effective implementation of sector-specific action points will be the key factor in improvement of air quality of the Uttarakhand state.</p><h3>Graphical Abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":36991,"journal":{"name":"Aerosol Science and Engineering","volume":"7 3","pages":"415 - 425"},"PeriodicalIF":1.4,"publicationDate":"2023-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50010328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Impact of COVID-19 Lockdown on Ambient Air Quality in the Southwest Coastal Urban Regions of India","authors":"George Thomas,&nbsp;Jobin Thomas,&nbsp;R. S. Devika,&nbsp;Anju Krishnan,&nbsp;Anju V. Mathew,&nbsp;Amrutha J. Nair","doi":"10.1007/s41810-023-00180-x","DOIUrl":"10.1007/s41810-023-00180-x","url":null,"abstract":"<div><p>The rapid growth of urban areas and population as well as associated development over recent decades have been a major factor controlling ambient air quality of the urban environment in Kerala (India). Being located at the southwestern fringe of the Indian peninsula, Kerala is one of the regions that has been significantly influenced by the activities in the Indian Ocean. The present study focuses on the effect of the COVID-19 lockdown (in 2021) on ambient air quality in the selected coastal metropolitan areas of Kerala. Although previous research studies reported improvement in ambient air quality in Kerala during the lockdown period, this study demonstrates the potential of onshore transport of air pollutants in controlling the air quality of coastal urban regions during the lockdown period. Data from the ambient air quality monitoring stations of the Kerala State Pollution Control Board in the urban areas of Thiruvananthapuram (TM), Kollam (KL), Kozhikode (KZ), and Kannur (KN) are used for the analysis. Temporal variation in the concentration of air pollutants during the pre-lockdown (PRLD), lockdown (LD), and post-lockdown (PTLD) periods (i.e., 1 March to 31 July) of 2021 is examined to assess the effect of lockdown measures on the National Air Quality Index (AQI). Results indicate a significant decline in the levels of air pollutants and subsequent improvement in air quality in the coastal urban areas. All the effect of lockdown measures has been evident in the AQI, an increase in the concentration of different pollutants including CO, SO₂, and NH₃ during the LD period suggests contributions from multiple sources including onshore transport due to marine traffic and transboundary transport.</p></div>","PeriodicalId":36991,"journal":{"name":"Aerosol Science and Engineering","volume":"7 3","pages":"303 - 314"},"PeriodicalIF":1.4,"publicationDate":"2023-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50450348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Influence of Fine-Mode Aerosols on MODIS–AERONET Aerosol Optical Depth Disparities in the Sahel West Africa","authors":"Okechukwu K. Nwofor,&nbsp;Anthony A. Uroh,&nbsp;Chukwuma Anoruo","doi":"10.1007/s41810-023-00177-6","DOIUrl":"10.1007/s41810-023-00177-6","url":null,"abstract":"<div><p>In the present paper, the disparities between aerosol optical depths (AOD) retrieved using the Moderate Resolution Infrared Spectro-radiometer (MODIS) and AErosol RObotic NETwork (AERONET) are presented for five Sahel sites based on the <i>R</i>² correlation metric of their multiyear data. The sites are Banizoumbou (13.54N; 2.66E), Dakar (14.39N; 16.95 W), Djougou (9.76N; 1.59E), Ilorin (8.32N; 4.34E), and Ouagadougou (12.2N; 1.4 W). The overall and seasonal MODIS–AERONET AOD disparities for the locations were evaluated and compared with aerosol parameters associated with fine-mode prevalence at the sites, namely, total AOD (<i>AOD</i>_500nm), precipitable water (<i>PW</i>), Angstrom derivative (<i>α</i>^<i>1</i>), and fine mode fraction (<i>FMF</i>) for the seasons MAM, JJA, SON, and DJF. The largest overall disparity (least <i>R</i>²) was found for Ilorin (<i>R</i>² = 0.021 ± 0.295), while the least overall disparity (largest <i>R</i>²) was found for Banizoumbou (<i>R</i>² = 0.660 ± 0.132). The <i>FMF</i> was found to have the strongest correlations with the overall and seasonal disparities (<i>R</i>²*<i>FMF</i> = – 0.626 (overall), <i>R</i>²*<i>FMF</i> = – 0.350 (MAM), <i>R</i>²*<i>FMF</i> = – 0.9 (JJA), <i>R</i>²*<i>FMF</i> = – 0.602 (SON), <i>R</i>²*<i>FMF</i> = 0.084 (DJF). The largest seasonal disparity occurred at Ilorin in JJA (<i>R</i>² = 0.014) when very low <i>AOD</i>_500nm (0.352) was associated with significant fine-mode occurrence (<i>α</i>^<i>1</i> = 0.433; <i>FMF</i> = 0.581), while the least seasonal disparity occurred in Djougou in MAM (<i>R</i>² = 0.866) when very high <i>AOD</i>_500nm (0.814) was associated with the least fine-mode occurrence (<i>α</i>^<i>1</i> ~ 0.00; <i>FMF</i> = 0.278). In Banizoumbou, Dakar, Djougou, and Ouagadougou, fine-mode aerosols occurred more significantly in the dry period (low <i>PW</i>), suggesting a biomass burning source, and at Ilorin, the fine-mode occurred more significantly in the monsoon season (high <i>PW</i>), suggesting a non-biomass burning source. Since the AOD at Ilorin correlated strongest with monsoon-season meridional wind (<i>AOD</i>_500nm*MW_wet = 0.611), compared to other seasonal wind fields, it is inferred that the large monsoon-season MODIS–AERONET AOD disparities at the site were due to southwesterly wind, which transports fine-mode aerosols from coastal industrial sites, as indicated in previous studies.</p></div>","PeriodicalId":36991,"journal":{"name":"Aerosol Science and Engineering","volume":"7 2","pages":"251 - 260"},"PeriodicalIF":1.4,"publicationDate":"2023-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41810-023-00177-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50487163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of Changes in Atmospheric Pollutants due to the Cessation of Anthropogenic Activities: Spatial Heterogeneity and Complex Atmospheric Chemistry","authors":"Shruti Tripathi,&nbsp;Debayan Mandal,&nbsp;Abhishek Chakraborty","doi":"10.1007/s41810-023-00175-8","DOIUrl":"10.1007/s41810-023-00175-8","url":null,"abstract":"<div><p>The current study examines the air quality trends in response to Covid-19-induced lockdowns at various locations in Delhi. The primary pollutants like NO₂, CO, and PM₁₀ have shown reductions during the lockdown phase, but the magnitude varied significantly in different places. Also, during the lockdown, air quality in some areas of Delhi exceeded National Ambient Air Quality Standards. Secondary pollutants like O₃ have shown mixed trends due to complex atmospheric processes and dependence on relative proportions of VOC and NO_x levels. A total of six sites, including traffic, industrial, and residential sites, have been studied. The diurnal behavior of pollutants also differed significantly around different places. During the lockdown, Ashok Vihar, a traffic-influenced area, showed a decrease in O₃ (~ 40%), while at DTU (Traffic site), O₃ levels increased (~ 48%)_. The industrial sites Okhla and Wazirpur also showed different trends during the lockdown; O₃ in Wazirpur decreased by 50%, whereas Okhla increased by 25%. NO_x concentration was lesser in 2020 at all the stations compared to 2019, indicating the positive impact of the lockdown on air pollution due to vehicular emissions. The Approximate Envelope Method estimates the secondary fraction of PM_2.5. This fraction of PM is dominated in the lockdown year in the residential site, while it remains unchanged in the traffic site and increased by 11% in the industrial area. Despite being not so far from each other, these sites show very different patterns of pollutants during lockdown episodes.</p></div>","PeriodicalId":36991,"journal":{"name":"Aerosol Science and Engineering","volume":"7 2","pages":"237 - 250"},"PeriodicalIF":1.4,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50023517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Air Pollution Control Technologies for Indoor Particulate Matter Pollution: A Review","authors":"Aiswarya Kumar,&nbsp;Vasudev Malyan,&nbsp;Manoranjan Sahu","doi":"10.1007/s41810-023-00178-5","DOIUrl":"10.1007/s41810-023-00178-5","url":null,"abstract":"<div><p>Indoor air quality is one of the major concerns in the modern environment since urban residents spend 80–90% of their time staying indoors. Pollutant exposure could be relatively higher indoors due to the increased number of sources along with activities that cause re-suspension of pollutants back into the air stream. Several existing and emerging technologies for indoor particulate matter (PM) control are available; however, there is a lack of a comprehensive review of these technologies for the end-users. Therefore, current study presents a techno-commercial comparison of the existing indoor air pollution control technologies based on several metrics such as particle removal efficiency, cost-commercialization, energy consumption, and by-product emission. Additionally, recent advancements and applications of the aforementioned technologies in real indoor environments have also been reviewed. The study suggests that for efficient particle removal, either high-efficiency particulate air (HEPA) filters or ESP should be preferred. Likewise, for the removal of multiple pollutants like particles, gases and volatile organic compounds simultaneously, emerging technologies can be integrated with pre- or post-stages of conventional technologies. The cost performance index is lowest for HEPA filters and ESP, indicating that they provide a better value for money in terms of performance. Ionization based and emerging PM control technologies should be avoided in case of sensitive populations due to health concern associated with emission of hazardous by-products.</p><h3>Graphical Abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":36991,"journal":{"name":"Aerosol Science and Engineering","volume":"7 2","pages":"261 - 282"},"PeriodicalIF":1.4,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41810-023-00178-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50465890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristics of Remotely Sensed Urban Pollution Island (UPI) & its Linkage with Surface Urban Heat Island (SUHI) over Eastern India","authors":"Archisman Barat,&nbsp;P. Parth Sarthi","doi":"10.1007/s41810-023-00176-7","DOIUrl":"10.1007/s41810-023-00176-7","url":null,"abstract":"<div><p>The urbanisation and its detrimental impact on climate is a well-documented phenomenon in today’s world, but research documenting the Urban Pollution Island (UPI) especially over South Asia is seldom found. With the advancement of the satellite datasets, the quantification of UPI has become possible only in recent years. When measured using satellite data, the UPI is the spatial anomaly of Aerosol Optical Depth (AOD) over an urban area with reference to a nearby non-urban zone. UPI may influence energy budget, precipitation patterns and human health over the city. In the present research, it has been attempted to analyse the climatology and characteristics of UPI and its association with the Surface Urban Heat Island (SUHI) over six cities (Patna, Gaya, Ranchi, Jamshedpur, Bardhaman and Siliguri) from eastern India, which is a highly populated region and infamous for climatic concerns. Alongside, a Surface PM2.5 data is also investigated further, to find heat and pollution island links. The UPI–SUHI interactions have been evaluated and found to be very distinct for each city. It is found that high urban AOD value can be noticed irrespective of the UPI magnitude over Patna. Bardhaman has exhibited very high AOD (&gt; 3.0) even in very low UPI conditions. Jamshedpur’s urban loadings found to be contributing somewhere to UPI formations. UPII has also shown a clear sign of a seasonal cycle across the cities. In Patna, increase in PM2.5 may be linked to SUHII in medium loading cases and very high PM2.5 loadings (&gt; 200 μg/m³) result in low average SUHII. It may be summarised that Patna, Gaya and Bardhaman are exhibiting high surface PM2.5 loads over urban zones, whilst Ranchi, Siliguri and Jamshedpur have much cleaner urban air. The Mann–Kendall test and Pettitt’s test also detected significant increasing trend and change point in recent times for UPI intensity. The well-developed UPI system shows an exigency of more in-depth studies to mitigate the detrimental effects of UPI–SUHI in upcoming times.</p></div>","PeriodicalId":36991,"journal":{"name":"Aerosol Science and Engineering","volume":"7 2","pages":"220 - 236"},"PeriodicalIF":1.4,"publicationDate":"2023-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50004470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Size-Resolved Characteristics and Sources of Inorganic Ions, Carbonaceous Components and Dicarboxylic Acids, Benzoic Acid, Oxocarboxylic Acids and α-Dicarbonyls in Wintertime Aerosols from Tianjin, North China","authors":"Subba Rao Devineni,&nbsp;Chandra Mouli Pavuluri,&nbsp;Shuang Wang,&nbsp;Lujie Ren,&nbsp;Zhanjie Xu,&nbsp;Peisen Li,&nbsp;Pingqing Fu,&nbsp;Cong-Qiang Liu","doi":"10.1007/s41810-022-00159-0","DOIUrl":"10.1007/s41810-022-00159-0","url":null,"abstract":"<div><p>Size-resolved aerosols collected at Tianjin, North China in winter were studied for inorganic ions, carbonaceous components, dicarboxylic acids, benzoic acid, oxocarboxylic acids and <i>α</i>-dicarbonyls. Na⁺ found to be the dominant ions, while sum of SO₄²⁻, NO₃⁻ and NH₄⁺ was almost more than half of the total ionic mass in all size fractions. Both inorganic anions and carbonaceous components showed a bimodal distribution. Water-soluble organic carbon (WSOC) accounted for 53.9% to total OC, with 36.0% in fine- and 17.9% in coarse-mode fractions (≤ 2.1 and ≥ 2.1 μm particles, respectively) of aerosols. Most of dicarboxylic acids and related compounds peaked at 0.43–0.65 μm size bin followed by a gradual decrease, except for few species. Average concentrations of total dicarboxylic acids were 1223 and 516 ng m⁻³ in fine and coarse mode fractions, respectively. Oxalic acid found to be the most abundant species followed by phthalic and azelaic acids in fine- and coarse-mode fractions, except the third most abundance of glyoxylic acid in the coarse mode fraction. Based on size-resolved distributions, correlations and mass ratios of selected marker species, we found that inorganic aerosols were mainly derived from sea salt and vehicular exhaust and coal combustion emissions rather than biomass burning and soil dust in winter over the Tianjin region, North China. While dicarboxylic acids and related compounds were mainly originated from fossil fuel including coal combustion and their contributions from biomass burning and marine and terrestrial biogenic emissions were minor. Their in situ secondary formation and transformations were intensive at local and regional scales.</p></div>","PeriodicalId":36991,"journal":{"name":"Aerosol Science and Engineering","volume":"7 1","pages":"1 - 22"},"PeriodicalIF":1.4,"publicationDate":"2023-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50029081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Distribution and variability of Black Carbon Aerosol and its response to specific Meteorological Occurrences: A case study on the Indian city of Ranchi","authors":"Rahul Kashyap,&nbsp;Radheshyam Sharma,&nbsp;Shyam Das Kotal","doi":"10.1007/s41810-023-00174-9","DOIUrl":"10.1007/s41810-023-00174-9","url":null,"abstract":"<div><p>The black carbon (BC) aerosol is the organic remanence of the incomplete burning of various fuels. The study attempts to analyse the temporal variability of BC over Ranchi, Jharkhand, India using ground based measurements of aethalometer. The diurnal variation reveals two prominent sharp peaks throughout the year, one in the morning hours (0130-0330 UTC) and other in the evening hours (1330-1530 UTC). The results show a marked seasonal variation in BC concentration, with highest value during the pre-monsoon (7.24 µg/m³) and least in the monsoon (2.01 µg/m³) season. The relationship of meteorological variables such as temperature, precipitation, aerosol optical depth (AOD), organic carbon and vegetation represented via Normalized Difference Vegetation Index (NDVI) with BC is also computed using satellite-based measurements. A significant correlation is in the spatial pattern of organic carbon (<i>r</i> = 0.927), AOD (<i>r</i> = 0.86) and temperature (<i>r</i> = 0.748) with BC, whereas precipitation (<i>r</i> = − 0.146) and NDVI (<i>r</i> = − 0.203) shows insignificant correlation with BC. Significantly higher level of BC concentration (11.95 µg/m³) in response to the fog event is observed throughout the day against lower (6.5 µg/m³) BC in winter. The morning peak is increased by 4.71 µg/m³ and delayed by two hours on foggy day than the winter mean. During the thunder squall event, mean BC is reduced to 3.84 µg/m³ from 7.24 µg/m³ in  pre-monsoon. Similar reduction is also observed in mean BC (1.2 µg/m³) in response to a rainy day during monsoon. The variability in BC is key to the changes in AOD that impacts the air quality, energy balance, cloud-precipitation processes, global warming and climate change.</p></div>","PeriodicalId":36991,"journal":{"name":"Aerosol Science and Engineering","volume":"7 2","pages":"207 - 219"},"PeriodicalIF":1.4,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41810-023-00174-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50517621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization from Diesel and Renewable Fuel Engine Exhaust: Particulate Size/Mass Distributions and Optical Properties","authors":"Nikhil Sharma,&nbsp;Kalyan Mitra,&nbsp;Jelena Pezer,&nbsp;Ravikant Pathak,&nbsp;Jonas Sjöblom","doi":"10.1007/s41810-023-00172-x","DOIUrl":"10.1007/s41810-023-00172-x","url":null,"abstract":"<div><p>Combustion of fossil fuel produces emissions and is one of the major environmental problems leading to climate change. Diesel engines are highly efficient but produce particulate emissions. These particulate emissions are considered dangerous to human health because inhaling particulates may cause respiratory and heart disease. Substituting fossil diesel fuel with renewable diesel fuel and using diesel particulate filters is one possibility to meet stringent legislative requirements. With this motivation, the present experimental investigation aimed to evaluate the particle size distribution (PSD), optical properties of particulate matter (PM) emitted, and the outcome of using an after-treatment system comprising of a diesel particle filter (DPF). This investigation aimed to make a comparative analysis of particulate emission upstream and downstream of the DPF with and without ultraviolet (UV) light (405 nm and 781 nm wavelength) turned on/off. Experiments were performed at (a) engine idle with a torque of 6 Nm at 750 rpm, IMEP of 1.35 bar and power of 0.5 kW, (b) engine at part load with a torque of 32 Nm at 1200 rpm, IMEP of 8.5 bar and power of 4.5 kW. Diesel engine was operated on two fuels (a) Diesel and (b) EHR7. Results showed that as and when UV light was turned on, a distinct nucleation mode that dominated the number concentration for both test fuels were observed. Downstream of the filter had relatively higher AAE values which show the contribution to climate change. Present experimental research is important for renewable fuel industries, industrial innovation's future, and the exhaust gas after-treatment system (EATS) community. The results contribute to knowledge for occupational exposure, human health, and the environment.</p></div>","PeriodicalId":36991,"journal":{"name":"Aerosol Science and Engineering","volume":"7 2","pages":"182 - 191"},"PeriodicalIF":1.4,"publicationDate":"2023-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41810-023-00172-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50047245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}