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Experimental study on a diesel engine fueled with Semecarpus anacardium biodiesel containing dispersed TiO2 nanoparticles: performance, combustion, and emission analyses

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Abstract

This study examined the performance, combustion, and emission characteristics of a diesel engine fueled with Semecarpus anacardium biodiesel (BD20) and TiO2 nanoparticles. TiO2 nanoparticles were dispersed in BD20 biodiesel at different concentrations (50, 75, and 100 mg/L). In addition, a dispersant (QPAN80) was added at a ratio of 1:1 for the surface modification of the TiO2 nanoparticles. Injection pressures of 200, 225, and 250 bar were used to investigate the effect of the aforementioned variables on performance. The dispersion of nanoparticles in BD20 improved the brake thermal efficiency (BTE) and specific fuel consumption (BSFC) of the nanofuel. The cylinder pressure (CP) and net heat release rate (NHRR) of BD20 blended with nanoparticles were significantly higher than those of conventional diesel. The NOx emission levels were lower. An increasing in the injection pressure improved the operating characteristics. At an FIP of 250 bar, the progressive BTE and minimum BSFC were 34.46% and 0.234 kg/kWh, whereas the peak CP and NHRR were 69.66 bar and 70.14 J/°C, respectively. CO, HC, NOx, and smoke were 0.02%, 33 ppm, 846 ppm, and 37.58%, respectively, for BD20 + 75 mg/L of TiO2 + 75 mg/L of QPAN.

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Abbreviations

NaOH:

Sodium hydroxide

BD100:

Semecarpus anacardium biodiesel (100%)

BD20:

Semecarpus anacardium biodiesel (20%)

TiO2 :

Titanium dioxide nanoparticles

ASTM:

American standards for testing materials

SEM:

Scanning electron microscope

HLB:

Hydrophilic and lipophilic balance

DSC:

Differential scanning calorimetry

FTIR:

Fourier transform infrared spectroscopy

mg/L:

Milligram per liter

Al2O3 :

Aluminum oxide nanoparticles

ZnO:

Zinc oxide nanoparticles

CuO:

Copper oxide nanoparticles

SiO2 :

Silicon dioxide nanoparticles

CeO2 :

Cerium oxide nanoparticles

Co3O4 :

Cobalt tetroxide

BTE:

Brake thermal efficiency (%)

FIP:

Fuel injection pressure (bar)

BP:

Brake power (kW)

BSFC:

Brake-specific fuel consumption (kg/kWhr)

CO:

Carbon monoxide (%)

HC:

Unburnt hydrocarbons (ppm)

NOx :

Nitrogen oxides (ppm)

NHRR:

Net heat release rate (J/oCA)

CP:

Cylinder pressure (bar)

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Acknowledgements

The authors would like to acknowledge Hindustan Petroleum Corporation Limited (HPCL), Visakhapatnam, India for conducting the biodiesel tests. The authors thank Andhra University and GITAM Deemed to be University for their cooperation in conducting experiments in their laboratories.

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Correspondence to Jaikumar Sagari.

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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.

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Illipilla, M., Lankapalli, S.V.P. & Sagari, J. Experimental study on a diesel engine fueled with Semecarpus anacardium biodiesel containing dispersed TiO2 nanoparticles: performance, combustion, and emission analyses. Energ. Ecol. Environ. 8, 113–128 (2023). https://doi.org/10.1007/s40974-022-00265-2

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  • DOI: https://doi.org/10.1007/s40974-022-00265-2

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