Effects of Biodiesel Addition on the Physical Properties and Reactivity of the Exhaust Soot Particles from Diesel Engine

Xuyang Zhang, Gang Lyu, Chonglin Song and Yuehan Qiao
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Xuyang Zhang: State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China
Gang Lyu: State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China
Chonglin Song: State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China
Yuehan Qiao: State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China

Energies, 2020, vol. 13, issue 16, 1-15

Abstract: The present study investigated the effects of adding 20 vol.% biodiesel to petroleum diesel (to produce a mixture termed B20) on the physical properties and reactivity of the resulting exhaust soot particles. Tests were performed at different engine loads of a constant speed, and the soot particles from the combustion of B20 and petroleum diesel fuel (DF) were collected from the engine exhaust stream. Transmission electron microscopy and Raman spectroscopy were employed for the analysis of soot morphology and nanostructure. The thermogravimetric analysis was used to determine the oxidative reactivity of the soot. For both the DF and B20 soot, increased engine loads result in soot aggregates with more compact morphology and primary soot particles with larger size and more organized structure. Compared to the DF soot, the B20 aggregates have a slightly more compact morphology and smaller primary particle size. No appreciable differences are observed in nanostructure between the DF and B20 soot. The thermogravimetric analysis demonstrates that the B20 soot is associated with lower peak temperature, burnout temperature and apparent activation energy, suggesting that it is more reactive than the DF soot.

Keywords: biodiesel; soot particles; physical property; oxidative reactivity (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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