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Study on the correlation between mechanical and oxidation characteristics of methanol/biodiesel particulate matter

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Abstract

In order to effectively reduce the number of diesel exhaust particles and reduce particulate emissions, it is necessary to have a deep understanding of the mechanical and oxidation characteristics of diesel exhaust particles. For the combustion particles of methanol/biodiesel (BM5, BM10, and BM15), atomic force microscopy and thermogravimetric analyzers were used to study changes of particle in mechanical parameters and oxidation rules, and association impact analysis was performed. Biodiesel (B100) was used as a reference. The results showed that with the increase of methanol content, the attraction force Fat, the cohesive force Fad, the adhesion energy Wad, and Young’s modulus E of the methanol/biodiesel particles all decreased significantly. During the oxidation process, the weight loss rate of SOF increased, while the content of soot decreased. In addition, the initial combustion temperature of the SOF component TSOF and soot component Tsoot in particles as well as the burn-out temperature Tend showed a downward trend. There was a certain correlation between the mechanical parameters and the oxidation properties of the particles. The smaller the mechanical parameters, such as the attraction force Fat, viscous force Fad, the cohesive force Fad, the adhesion energy Wad, and Young’s modulus E, the greater the looseness of the particles, the smaller the particle hardness and the degree of graphitization.

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Funding

This study was supported by the National Natural Science Foundation of China under grant (no. 51776089), the Natural Science Research Projects in Jiangsu Higher Education Institutions (18KJB470006), the Open Research Subject of Key Laboratory of Automobile Measurement and Control and Safety (QCCK2019–004), and the Eighteenth Group of Student Scientific Research Projects In Jiangsu University (Y18A111).

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  1. School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang, 212013, China

    Shuai Liu, Libin Zhang, Zhong Wang, You Li & Yong Sun

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  1. Shuai Liu
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  2. Libin Zhang
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  3. Zhong Wang
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  4. You Li
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  5. Yong Sun
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Correspondence to Shuai Liu.

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Liu, S., Zhang, L., Wang, Z. et al. Study on the correlation between mechanical and oxidation characteristics of methanol/biodiesel particulate matter. Environ Sci Pollut Res 27, 32732–32741 (2020). https://doi.org/10.1007/s11356-020-09518-1

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  • DOI: https://doi.org/10.1007/s11356-020-09518-1

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