Tags

Type your tag names separated by a space and hit enter

Evaluation of the impacts of biodiesel and second generation biofuels on NO(x) emissions for CARB diesel fuels.
Environ Sci Technol. 2012 Aug 21; 46(16):9163-73.ES

Abstract

The impact of biodiesel and second generation biofuels on nitrogen oxides (NO(x)) emissions from heavy-duty engines was investigated using a California Air Resources Board (CARB) certified diesel fuel. Two heavy-duty engines, a 2006 engine with no exhaust aftertreatment, and a 2007 engine with a diesel particle filter (DPF), were tested on an engine dynamometer over four different test cycles. Emissions from soy- and animal-based biodiesels, a hydrotreated renewable diesel, and a gas to liquid (GTL) fuel were evaluated at blend levels from 5 to 100%. NO(x) emissions consistently increased with increasing biodiesel blend level, while increasing renewable diesel and GTL blends showed NO(x) emissions reductions with blend level. NO(x) increases ranged from 1.5% to 6.9% for B20, 6.4% to 18.2% for B50, and 14.1% to 47.1% for B100. The soy-biodiesel showed higher NO(x) emissions increases compared to the animal-biodiesel. NO(x) emissions neutrality with the CARB diesel was achieved by blending GTL or renewable diesel fuels with various levels of biodiesel or by using di-tert-butyl peroxide (DTBP). It appears that the impact of biodiesel on NO(x) emissions might be a more important consideration when blended with CARB diesel or similar fuels, and that some form of NO(x) mitigation might be needed for biodiesel blends with such fuels.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

Hajbabaei M
Department of Chemical, Environmental Engineering, Bourns College of Engineering, Center for Environmental Research, Technology (CE-CERT), University of California, Riverside, California, United States.
Johnson KC
No affiliation info available
Okamoto RA
No affiliation info available
Mitchell A
No affiliation info available
Pullman M
No affiliation info available
Durbin TD
No affiliation info available

MeSH

BiofuelsCaliforniaNitrogen Oxides

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22788711

Citation

Hajbabaei, Maryam, et al. "Evaluation of the Impacts of Biodiesel and Second Generation Biofuels On NO(x) Emissions for CARB Diesel Fuels." Environmental Science & Technology, vol. 46, no. 16, 2012, pp. 9163-73.
Hajbabaei M, Johnson KC, Okamoto RA, et al. Evaluation of the impacts of biodiesel and second generation biofuels on NO(x) emissions for CARB diesel fuels. Environ Sci Technol. 2012;46(16):9163-73.
Hajbabaei, M., Johnson, K. C., Okamoto, R. A., Mitchell, A., Pullman, M., & Durbin, T. D. (2012). Evaluation of the impacts of biodiesel and second generation biofuels on NO(x) emissions for CARB diesel fuels. Environmental Science & Technology, 46(16), 9163-73. https://doi.org/10.1021/es300739r
Hajbabaei M, et al. Evaluation of the Impacts of Biodiesel and Second Generation Biofuels On NO(x) Emissions for CARB Diesel Fuels. Environ Sci Technol. 2012 Aug 21;46(16):9163-73. PubMed PMID: 22788711.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evaluation of the impacts of biodiesel and second generation biofuels on NO(x) emissions for CARB diesel fuels. AU - Hajbabaei,Maryam, AU - Johnson,Kent C, AU - Okamoto,Robert A, AU - Mitchell,Alexander, AU - Pullman,Marcie, AU - Durbin,Thomas D, Y1 - 2012/07/31/ PY - 2012/7/14/entrez PY - 2012/7/14/pubmed PY - 2012/12/18/medline SP - 9163 EP - 73 JF - Environmental science & technology JO - Environ Sci Technol VL - 46 IS - 16 N2 - The impact of biodiesel and second generation biofuels on nitrogen oxides (NO(x)) emissions from heavy-duty engines was investigated using a California Air Resources Board (CARB) certified diesel fuel. Two heavy-duty engines, a 2006 engine with no exhaust aftertreatment, and a 2007 engine with a diesel particle filter (DPF), were tested on an engine dynamometer over four different test cycles. Emissions from soy- and animal-based biodiesels, a hydrotreated renewable diesel, and a gas to liquid (GTL) fuel were evaluated at blend levels from 5 to 100%. NO(x) emissions consistently increased with increasing biodiesel blend level, while increasing renewable diesel and GTL blends showed NO(x) emissions reductions with blend level. NO(x) increases ranged from 1.5% to 6.9% for B20, 6.4% to 18.2% for B50, and 14.1% to 47.1% for B100. The soy-biodiesel showed higher NO(x) emissions increases compared to the animal-biodiesel. NO(x) emissions neutrality with the CARB diesel was achieved by blending GTL or renewable diesel fuels with various levels of biodiesel or by using di-tert-butyl peroxide (DTBP). It appears that the impact of biodiesel on NO(x) emissions might be a more important consideration when blended with CARB diesel or similar fuels, and that some form of NO(x) mitigation might be needed for biodiesel blends with such fuels. SN - 1520-5851 UR - https://www.unboundmedicine.com/medline/citation/22788711/full_citation/Evaluation_of_the_Impacts_of_Biodiesel_and_Second_Generation_Biofuels_on_NOx_Emissions_for_CARB_Diesel_Fuels_ L2 - https://doi.org/10.1021/es300739r DB - PRIME DP - Unbound Medicine ER -