Grantee Research Project Results
2022 Progress Report: Developing mechanisms for secondary organic aerosol from oxygenated volatile organic compounds in biomass burning and volatile chemical product emissions
EPA Grant Number: R840008Title: Developing mechanisms for secondary organic aerosol from oxygenated volatile organic compounds in biomass burning and volatile chemical product emissions
Investigators: Jathar, Shantanu , Pierce, Jeffrey
Institution: Colorado State University
EPA Project Officer: Chung, Serena
Project Period: August 1, 2020 through July 31, 2023 (Extended to July 31, 2024)
Project Period Covered by this Report: August 1, 2021 through July 31,2022
Project Amount: $400,000
RFA: Chemical Mechanisms to Address New Challenges in Air Quality Modeling (2019) RFA Text | Recipients Lists
Research Category: Air , Air Quality and Air Toxics , Early Career Awards
Objective:
The goal of this research is to improve the representation of secondary organic aerosol (SOA) formation from oxygenated volatile organic compounds (OVOCs) in biomass burning and volatile chemical product (VCP) sources in chemical mechanisms. We hypothesize that the inclusion of oxygenated VOCs, particularly phenols, furans, glycols, and glycol ethers, in chemical mechanisms will improve predictions of SOA formation and properties in air quality models (AQMs).
Progress Summary:
he project team was able to work on all three objectives in Year 2. We continued model development on the primary tool used in this work, i.e., the Statistical Oxidation Model-TwO Moment Aerosol Sectional (SOM-TOMAS) model to simulate dilution and include semi-volatile organic compounds (SVOCs). The model was used to develop SOA parameters for ten unique OVOCs representing glycols, glycol ethers, esters, acetates, oxygenated aromatics, and amines. An atmospheric version of the model was used to estimate (i) atmospherically relevant SOA mass yields, (ii) volatility basis set (VBS) parameters for use in chemical transport models, and (iii) SOA contributions of VCPs and fossil fuel combustion in a US megacity. Finally, the model was also used to study the evolution of organic aerosol (OA) at long photochemical ages for laboratory experiments performed on biomass burning emissions.
Funding from this project was used to support activities in 3 published papers (Akherati et al., 2022; He et al., 2022; June et al., 2022), 1 paper that is in press (Bilsback et al., 2022), and 2 papers that are in review (O’Donnell et al., 2022; Brewer et al., 2022). The work performed on this project was highlighted in 6 platform presentations and at 2 poster sessions at national and international conferences. There are two manuscripts in preparation (Sasidharan et al., in prep; Dearden et al., in prep) based on the work undertaken on this project.
Future Activities:
In Year 3, we will find additional applications for the SOM-TOMAS model to study OA formation and evolution from complex mixtures in field environments.
Journal Articles on this Report : 3 Displayed | Download in RIS Format
Other project views: | All 30 publications | 4 publications in selected types | All 4 journal articles |
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June NA, Hodshire AL, Wiggins EB, Winstead EL, Robinson CE, Thornhill KL, Sanchez KJ, Moore RH, Pagonis D, Guo H, Campuzano-Jost P, Jimenez JL, Coggon MM, Dean-Day JM, Bui TP, Peischl J, et al. Aerosol size distribution changes in FIREX-AQ biomass burning plumes:the impact of plume concentration on coagulation and OA condensation/evaporation. Atmospheric Chemistry and Physics 2022;22:12803–25. doi:10.5194/acp-22-12803-2022. |
R840008 (2022) |
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He Y, Lambe AT, Seinfeld JH, Cappa CD, Pierce JR, Jathar SH. Process-level modeling can simultaneously explain secondary organic aerosol evolution in chambers and flow reactors. Environmental Science & Technology 2022;56:6262–73. doi:10.1021/acs.est.1c08520. |
R840008 (2022) |
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Akherati A, He Y, Garofalo LA, Hodshire AL, Farmer DK, Kreidenweis SM, Permar W, Hu L, Fischer EV, Jen CN, Goldstein AH, Levin EJT, DeMott PJ, Campos TL, Flocke F, Reeves JM, et al. Dilution and photooxidation driven processes explain the evolution of organic aerosol in wildfire plumes. Environmental Science:Atmospheres 2022;2:1000–22. doi:10.1039/D1EA00082A. . |
R840008 (2022) |
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Supplemental Keywords:
volatile chemical products, wildfires, volatile organic compounds, secondary organic aerosol, heterogeneous chemistry, volatility basis setRelevant Websites:
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Progress and Final Reports:
Original AbstractThe perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.