Kinetic Modeling of Secondary Organic Aerosol in a Weather-Chemistry Model: Parameterizations, Processes, and Predictions for GOAmazon

ACS ES&T Air, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Language: Английский

Real-World Emissions and Formation Mechanism of IVOCs from Biodiesel-Fueled Agricultural Machinery

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

The use of biodiesel as an alternative to diesel remains controversial because its potential impact on organic matter emissions. Herein, intermediate-volatility compounds (IVOCs) from five agricultural machines (AMs) using three types fuels (pure (B0), mixed with 5 and 20% (B5 B20), respectively) were collected analyzed. following results obtained: (1) Reasonable ratios reduced IVOC average emission factors IVOCs (EFIVOCs) B5-fueled AMs 485.8 ± 272.9 mg/kg fuel, 24.2% reduction that B0-fueled AMs. (2) chemical compositions secondary aerosol formation potentials (SOAFPs) changed during fueled by different blend ratios. highest EFIVOCs values for B5- B20-fueled within the Bin12 interval. Consequently, SOAFPs n-alkanes lower than those B0. (3) oxygen contents B5 B20 increased their combustion efficiency, long-chain carbons in pyrolyzed fragmented. However, high-viscosity inhibited engine performance more volatile was condensed adsorbed unburned fuel. In future, some technologies should be developed reduce viscosity biodiesel.

Language: Английский

Full-Volatility Organic Emission and Oxidation: Key to the Puzzle of Atmospheric Reactive Organic Carbon

Environmental Science & Technology Letters, Journal Year: 2024, Volume and Issue: 11(11), P. 1138 - 1140

Published: Oct. 15, 2024

Language: Английский