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Investigation of bioethanol production from jatropha deoiled cake and its blending effects for environmental sustainability

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Abstract

This paper describes the process of extracting ethanol from Jatropha curcas and its various blending effects on spark-ignited engine performance for environmental sustainability. Alternatives to conventional fuel sources have to be found because of the depletion of fossil fuels and stringent regulations. Every day, the growing population and improved transportation increase the energy demand. Bioethanol is an effective substitute for gasoline and SI engine diesel. Worldwide, passenger cars typically blend 10% bioethanol with gasoline. Some nations, like India, have stated plans to blend 20% bioethanol with gasoline starting shortly. From leftover jatropha deoiled cake (JDC), bioethanol was produced utilizing the fermentation and vacuum distillation methods. Four different blends were prepared on a volumetric basis at different engine speeds at a constant compression ratio of 10:1 and the wide-open throttle was tested for various performances and emissions. Bioethanol enrichments reduce CO and CO2 emissions but increase nitrogen oxide emissions. JDCE 15 was found to have the best engine performance out of all the fuel blends tested. This study suggests that, if NOx emission reduction measures are carried out, JDC can be used as a source for the manufacturing of second-generation bioethanol.

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Data availability

The datasets used or analyzed during the current study are available from the corresponding author upon reasonable request.

Abbreviations

ASTM:

American Society for Testing and Materials

BP:

Brake power

BSFC:

Brake-specific fuel consumption

BTE:

Brake thermal efficiency

CO:

Carbon monoxide

CO2 :

Carbon dioxide

COV:

Coefficient of variation

CR:

Compression ratio

HC:

Hydrocarbon

IMEP:

Indicated mean effective pressure

JDCE 00:

Pure gasoline

JDCE 10:

10% Bioethanol + 90% petrol

JDCE 15:

15% Bioethanol + 85% petrol

JDCE 20:

20% Bioethanol + 80% petrol

JDCE 25:

25% Bioethanol + 75% petrol

IP:

Indicated power

MON:

Motor octane number

NOx:

Oxides of nitrogen

RON:

Research octane number

SI:

Spark ignition

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Authors and Affiliations

Authors

Contributions

Minal Deshmukh contributes to the study of conceptualization and design, investigation, and supervision. Ashwini Pande performed the experiments, protocol finalization, and wrote the manuscript’s first draft. Vishnu Choudhari contributes to analytical testing and experiments. Dhanashri Pendse contributes to the literature review and writing the second draft. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Minal P Deshmukh.

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The authors declare no competing interests.

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Responsible Editor: Ta Yeong Wu

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Deshmukh, M., Pande, A., Choudhari, V. et al. Investigation of bioethanol production from jatropha deoiled cake and its blending effects for environmental sustainability. Environ Sci Pollut Res 30, 103640–103651 (2023). https://doi.org/10.1007/s11356-023-29614-2

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  • DOI: https://doi.org/10.1007/s11356-023-29614-2

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