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particulateemissions, etc ; aerosols; autumn; basins; biomass; cities; coal; combustion; nitrates; organic carbon; pollution; risk; steel; sulfates; water content; winter; China; Show all 17 Subjects
Abstract:
... Nowadays, the fine particle pollution is still severe in some megacities of China, especially in the Sichuan Basin, southwestern China. In order to understand the causes, sources, and impacts of fine particles, we collected PM₂.₅ samples and analyzed their chemical composition in typical months from July 2018 to May 2019 at an urban and a suburban (background) site of Chengdu, a megacity in this r ...
particulateemissions, etc ; durability; engines; testing; Show all 4 Subjects
Abstract:
... Diesel vehicle emissions generally deteriorate with vehicle mileage due to the wear and deterioration of vehicle parts. Most of the experimental studies on vehicle emission durability were carried out based on the standard operation cycles of engine or vehicle, few research investigated vehicle emission deterioration characteristics under real driving conditions. In this research, the real driving ...
particulateemissions, etc ; air quality; dust; guidelines; particulates; Show all 5 Subjects
Abstract:
... Switching diesel buses (DBs) to electric buses (EBs) has been a global trend to reduce the use of fossil fuels and improve air quality. However, buses electrification may lead to additional vehicle weight, which may emit more non-exhaust particulate matter (PM) emissions. It remains debatable whether buses' electrification will successfully improve air quality as excepted. To assess the effect of ...
particulateemissions, etc ; carbon; environmental science; nitrogen; California; Show all 5 Subjects
Abstract:
... This study quantified emission factors of black carbon (BC) and nitrogen oxides (NOₓ) from 21 engines on in-use excursion vessels and ferries operating in California’s San Francisco Bay, including EPA uncertified and Tier 1–4 engines and across engine operating modes. On average, ∼60 fuel-based emission factors per engine were measured using a novel combination of exhaust plume capture combined wi ...
particulateemissions, etc ; carbon dioxide; emissions factor; energy; models; Show all 5 Subjects
Abstract:
... Vehicle emission models are relevant for evaluating the performance of vehicle technologies and help in the definition of environmental policies. This paper presents an improved emissions modelling approach (named VSP+M) by combining the vehicle specific power (VSP) with load-regime engine maps for each VSP mode. The new modelling enabled to link tailpipe emissions to vehicle and engine operating ...
particulateemissions, etc ; air; air pollution; cold; models; sulfur; Show all 6 Subjects
Abstract:
... The aim of this study was to investigate the effect of changes in meteorological parameters and fuel composition on the emission rate of air pollutants in the vehicle fleet of the Tehran Metropolis. The results of this study can be used in management decisions to reduce the emission of air pollutants. In this paper, based on the international vehicle emission model and using mathematical equations ...
particulateemissions, etc ; calcium oxide; combustion; heavy metals; particulates; Show all 5 Subjects
Abstract:
... In this study, experimental results on size distribution, inorganic element distribution, and inorganic minerals composition/transformation of particulate matter generated from solid waste combustion are revealed. The results showed that the PM₁₀ generated from solid waste combustion exhibited a trimodal distribution. The yields of PM₁ and PM₁₀ shows a linear correlation with the (Na₂O + K₂O)/(SiO ...
particulateemissions, etc ; environment; environmental performance; manufacturing; Belgium; Sweden; Switzerland; Show all 7 Subjects
Abstract:
... Vehicle emission remote sensing devices have been widely used for monitoring and assessing the real-world emission performance of vehicles. They are also well-suited to identify candidate high emitting vehicles as remote sensing surveys measure the on-road, real-driving emissions (RDE) of a high proportion of the operational vehicle fleet passing through a testing site. This study uses the Gumbel ...
particulateemissions, etc ; biomass; combustion; cotton; oxygen; particulates; temperature; torrefaction; Show all 8 Subjects
Abstract:
... Torrefaction could improve the fuel properties and reduce the operating costs. However, the particulate matter (PM) emission behavior during the torrefied pellet combustion remains unknown. In this work, cotton stalk was torrefied at a temperature of 220–300 °C with a O₂ concentration of 0–21%. The torrefied pellet was burned out and PM emission behavior was investigated using a Dekati low-pressur ...
particulateemissions, etc ; air pollutants; coal; particulates; power generation; China; Show all 6 Subjects
Abstract:
... China has established the largest clean coal-fired power generation system in the world by accomplishing the technological transformation of coal-fired power plants (CFPPs) to achieve ultra-low emission. The potential for further particulate matter (PM) emission reduction to achieve near-zero emission for CFPPs has become a hotspot issue. In this study, PM emission from some ultra-low emission CFP ...
particulateemissions, etc ; coasts; organic carbon; pollution; research; traffic; Italy; Show all 7 Subjects
Abstract:
... A chemical characterization of PM₁₀ collected at hydrofoil exhaust stacks was performed conducting two on-board measuring campaigns, with the aim of assessing the ship emission impact on PM₁₀ collected in the coastal area of Naples (Southern Italy) and providing information about the characteristics of this important PM emission source.Samples were analysed determining the contribution of differen ...
particulateemissions, etc ; batteries; carbon; databases; energy; markets; neutralization; pollution; research; Show all 9 Subjects
Abstract:
... Analyzing the feasibility of fuel vehicle transition will be conducive to the realization of the carbon neutralization goal. However, at present, there are few studies specifically aimed at the transition of fuel vehicles. Therefore, this study first analyzed the necessity for the transition of fuel vehicles and then used CiteSpace to analyze 2081 articles in the core Web of Science database in th ...
particulateemissions, etc ; biochar; climate; environmental science; human health; particulates; pyrolysis; technology; Show all 8 Subjects
Abstract:
... Agricultural operations and processes generate copious quantities of particulate matter (PM) both directly and indirectly through emissions of PM precursor gases with dire consequences for human health, environment and climate. PM emissions from agricultural activities are projected to continually rise in the light of soaring food demand driven by a ballooning global population, and thus, plausibl ...
particulateemissions, etc ; air quality; ammonia; ammonium; case studies; isotopes; nitrogen; pollution; China; Show all 9 Subjects
Abstract:
... To investigate the impact of emission controls on ammonia (NH₃) pollution in urban atmosphere, observation on NH₃ (1 hr interval) was performed in Shanghai before, during and after the 2019 China International Import Expo (CIIE) event, along with measurements on inorganic ions, organic tracers and stable nitrogen isotope compositions of ammonium in PM₂.₅. NH₃ during the CIIE period was 6.5±1.0 μg/ ...
particulateemissions, etc ; detectors; drums (equipment); electrons; image analysis; libraries; measurement; particles; powders; technology; Show all 10 Subjects
Abstract:
... Positron Emission Particle Tracking (PEPT) is a Lagrangian particle tracking technique useful for imaging flow in opaque granular media. The scientific and industrial systems studied using PEPT and the PEPT technique can also be simulated: Discrete Element Method (DEM) for granular systems and Monte Carlo for PEPT. Using the open-source DEM2GATE library, we quantify the reconstruction of particle ...
particulateemissions, etc ; case studies; computer simulation; data collection; models; roadsides; traffic; vehicles (equipment); Show all 8 Subjects
Abstract:
... A vast number of pollutants are generated from on-road commuting vehicles, and there is an increasing need to explore vehicle emission monitoring and mitigation strategies. Traditionally, vehicle emissions can be monitored and measured directly from on-vehicle devices such as a sensor at the tailpipe, or based on expensive data collection tools such as roadside units; while another mainstream rese ...
particulateemissions, etc ; carbon dioxide; energy; environment; gasoline; models; natural gas; particulates; pollutants; travel; Show all 10 Subjects
Abstract:
... Modal shift from private vehicles (PVs) to transit buses has the potential to reduce energy use and emissions from on-road passenger transport. Comparisons between these modes may be sensitive to key factors, such as vehicle size, fuel and powertrains, passenger load, and travel routes. The objectives are to evaluate the sensitivity of emission rates to route alignment, and compare emission rates ...
particulateemissions, etc ; carbon dioxide; environment; greenhouse gases; models; pollutants; prediction; purification methods; China; Show all 9 Subjects
Abstract:
... The transient simulation of CO₂ and NOX from motor vehicles has essential applications in evaluating vehicular greenhouse gas emissions and pollutant emissions. However, accurately estimating vehicular transient emissions is challenging due to the heterogeneity between different vehicles and the continuous upgrading of vehicle exhaust purification technology. To accurately characterize the transie ...
particulateemissions, etc ; byproducts; case studies; combustion; compression strength; lignite; models; particulates; pollution; variance; Show all 10 Subjects
Abstract:
... The abundant coal powder generated as a waste by-product during the lignite upgrading process is harmful to the environment. Lignite briquetting offers a practical solution for lignite usage. Altering the process parameters of briquetting can significantly improve briquette quality. In this paper, the characteristics of lignite briquettes, including drop strength and compressive strength were inve ...
particulateemissions, etc ; air; gasoline; river deltas; rivers; roads; spatial variation; traffic; travel; China; Show all 10 Subjects
Abstract:
... Estimating intercity vehicle emissions precisely would benefit collaborative control in multiple cities. Considering the variability of emissions caused by vehicles, roads, and traffic, the 24-hour change characteristics of air pollutants (CO, HC, NOX, PM₂.₅) on the intercity road network of Guangdong Province by vehicle categories and road links were revealed based on vehicle identity detection d ...