PMID- 35114249
OWN - NLM
STAT- MEDLINE
DCOM- 20220331
LR  - 20220401
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 822
DP  - 2022 May 20
TI  - The impact of hydrogenated vegetable oil (HVO) on the formation of secondary 
      organic aerosol (SOA) from in-use heavy-duty diesel vehicles.
PG  - 153583
LID - S0048-9697(22)00675-1 [pii]
LID - 10.1016/j.scitotenv.2022.153583 [doi]
AB  - This manuscript contains an assessment of tailpipe emissions and secondary 
      aerosol formation from two in-use heavy-duty diesel vehicles (HDDVs) with 
      different aftertreatment systems when operated with ultra-low sulfur diesel 
      (ULSD) and hydrogenated vegetable oil (HVO) operated on a chassis dynamometer. 
      Secondary aerosol formation was characterized from the HDDVs' diluted exhaust 
      collected and photochemically aged in a 30 m(3) mobile atmospheric chamber. 
      Primary nitrogen oxide (NOx) and particulate matter (PM) emissions were reduced 
      for both vehicles operating on HVO compared to ULSD. For the vehicles with no 
      selective catalytic reduction (SCR) system, secondary aerosol production was ~2 
      times higher for ULSD compared to HVO. The composition of primary aerosol was 
      exclusively organic for the vehicle with no SCR system regardless of fuel type. 
      The composition of secondary aerosol with HVO was primarily organic for the 
      vehicle equipped with diesel particulate filter (DPF)/SCR system; however, when 
      the same vehicle was tested with ULSD, the composition was ~20% organic (80% 
      ammonium nitrate). The results reported here revealed that the in-use vehicle 
      with no-SCR had a non-functioning DPF leading to dramatic increases in secondary 
      aerosol formation when compared to the DPF/SCR vehicle. The high-resolution mass 
      spectra analysis showed that the POA of HVO combustion contained relatively lower 
      portion of CH class compounds (or higher CHO class compounds) compared to ULSD 
      under the similar conditions, which can be rationalized by the higher cetane 
      number of HVO. Substantial growth of oxidized organic aerosol (such as m/z 44 
      peak) were observed after 5 h of photochemical oxidation, consistent with aged 
      organic aerosols present in the atmosphere. The C(4)H(9)(+) fragment at m/z 57 
      peak was used as a tracer to calculate evolution of secondary organic aerosol 
      formation.
CI  - Copyright (c) 2022 Elsevier B.V. All rights reserved.
FAU - Ghadimi, Sahar
AU  - Ghadimi S
AD  - University of California, Bourns College of Engineering, Center for Environmental 
      Research and Technology (CE-CERT), 1084 Columbia Avenue, Riverside, CA 92507, 
      USA; Department of Chemical and Environmental Engineering, Bourns College of 
      Engineering, University of California, Riverside, CA 92521, USA.
FAU - Zhu, Hanwei
AU  - Zhu H
AD  - University of California, Bourns College of Engineering, Center for Environmental 
      Research and Technology (CE-CERT), 1084 Columbia Avenue, Riverside, CA 92507, 
      USA; Department of Chemical and Environmental Engineering, Bourns College of 
      Engineering, University of California, Riverside, CA 92521, USA.
FAU - Durbin, Thomas D
AU  - Durbin TD
AD  - University of California, Bourns College of Engineering, Center for Environmental 
      Research and Technology (CE-CERT), 1084 Columbia Avenue, Riverside, CA 92507, 
      USA; Department of Chemical and Environmental Engineering, Bourns College of 
      Engineering, University of California, Riverside, CA 92521, USA.
FAU - Cocker, David R
AU  - Cocker DR
AD  - University of California, Bourns College of Engineering, Center for Environmental 
      Research and Technology (CE-CERT), 1084 Columbia Avenue, Riverside, CA 92507, 
      USA; Department of Chemical and Environmental Engineering, Bourns College of 
      Engineering, University of California, Riverside, CA 92521, USA.
FAU - Karavalakis, Georgios
AU  - Karavalakis G
AD  - University of California, Bourns College of Engineering, Center for Environmental 
      Research and Technology (CE-CERT), 1084 Columbia Avenue, Riverside, CA 92507, 
      USA; Department of Chemical and Environmental Engineering, Bourns College of 
      Engineering, University of California, Riverside, CA 92521, USA. Electronic 
      address: gkaraval@cert.ucr.edu.
LA  - eng
PT  - Journal Article
DEP - 20220131
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
RN  - 0 (Aerosols)
RN  - 0 (Air Pollutants)
RN  - 0 (Gasoline)
RN  - 0 (Particulate Matter)
RN  - 0 (Plant Oils)
RN  - 0 (Vehicle Emissions)
SB  - IM
MH  - Aerosols/analysis
MH  - *Air Pollutants/analysis
MH  - Gasoline/analysis
MH  - Motor Vehicles
MH  - Particulate Matter/analysis
MH  - Plant Oils/analysis
MH  - Vehicle Emissions/analysis
OTO - NOTNLM
OT  - Heavy-duty diesel vehicles
OT  - Hydrogenated vegetable oil
OT  - Inorganic aerosol
OT  - Primary emissions
OT  - Secondary organic aerosol (SOA)
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2022/02/04 06:00
MHDA- 2022/04/01 06:00
CRDT- 2022/02/03 20:12
PHST- 2021/12/17 00:00 [received]
PHST- 2022/01/14 00:00 [revised]
PHST- 2022/01/27 00:00 [accepted]
PHST- 2022/02/04 06:00 [pubmed]
PHST- 2022/04/01 06:00 [medline]
PHST- 2022/02/03 20:12 [entrez]
AID - S0048-9697(22)00675-1 [pii]
AID - 10.1016/j.scitotenv.2022.153583 [doi]
PST - ppublish
SO  - Sci Total Environ. 2022 May 20;822:153583. doi: 10.1016/j.scitotenv.2022.153583. 
      Epub 2022 Jan 31.