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Exergetic analysis of the integrated first- and second-generation ethanol production from sugarcane

Author

Listed:
  • Palacios-Bereche, Reynaldo
  • Mosqueira-Salazar, Klever Joao
  • Modesto, Marcelo
  • Ensinas, Adriano V.
  • Nebra, Silvia A.
  • Serra, Luis M.
  • Lozano, Miguel-Angel

Abstract

This study carried out an exergetic analysis of a proposed ethanol production scheme in which a new process – enzymatic hydrolysis of sugarcane bagasse – is integrated into the conventional process. Seven cases were evaluated, among them a conventional ethanol production plant without hydrolysis, a conventional plant combined with hydrolysis and hydrolysate concentration by evaporation, and a conventional plant combined with hydrolysis and hydrolysate concentration by the membrane system. Process simulations were performed to evaluate mass and energy balances, adopting the pre-treatment of sugarcane bagasse by steam explosion, and including an integrated cogeneration system. It was assumed that sugarcane trash and lignin cake, a hydrolysis residue, are available as supplementary fuel. The exergies of streams involved in the process were calculated, along with their exergetic cost. For the conventional process, in which ethanol and surplus electricity are the major products, a second-law efficiency of 28% was found. In the integrated process, with biogas as an additional product, a higher performance in resources management was achieved, with values in the range of 35–37%.

Suggested Citation

  • Palacios-Bereche, Reynaldo & Mosqueira-Salazar, Klever Joao & Modesto, Marcelo & Ensinas, Adriano V. & Nebra, Silvia A. & Serra, Luis M. & Lozano, Miguel-Angel, 2013. "Exergetic analysis of the integrated first- and second-generation ethanol production from sugarcane," Energy, Elsevier, vol. 62(C), pages 46-61.
    • Handle: RePEc:eee:energy:v:62:y:2013:i:c:p:46-61
    DOI: 10.1016/j.energy.2013.05.010
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    References listed on IDEAS

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    1. Silva Ortiz, Pablo & de Oliveira, Silvio, 2014. "Exergy analysis of pretreatment processes of bioethanol production based on sugarcane bagasse," Energy, Elsevier, vol. 76(C), pages 130-138.
    2. Pina, Eduardo A. & Palacios-Bereche, Reynaldo & Chavez-Rodriguez, Mauro F. & Ensinas, Adriano V. & Modesto, Marcelo & Nebra, Silvia A., 2017. "Reduction of process steam demand and water-usage through heat integration in sugar and ethanol production from sugarcane – Evaluation of different plant configurations," Energy, Elsevier, vol. 138(C), pages 1263-1280.
    3. Milão, Raquel de Freitas D. & Araújo, Ofélia de Queiroz F. & de Medeiros, José Luiz, 2021. "Second Law analysis of large-scale sugarcane-ethanol biorefineries with alternative distillation schemes: Bioenergy carbon capture scenario," Renewable and Sustainable Energy Reviews, Elsevier, vol. 135(C).
    4. Leon, Juan A. & Palacios-Bereche, Reynaldo & Nebra, Silvia A., 2016. "Batch pervaporative fermentation with coupled membrane and its influence on energy consumption in permeate recovery and distillation stage," Energy, Elsevier, vol. 109(C), pages 77-91.
    5. Santos, V.E.N. & Ely, R.N. & Szklo, A.S. & Magrini, A., 2016. "Chemicals, electricity and fuels from biorefineries processing Brazil׳s sugarcane bagasse: Production recipes and minimum selling prices," Renewable and Sustainable Energy Reviews, Elsevier, vol. 53(C), pages 1443-1458.
    6. Copa Rey, José Ramón & Tamayo Pacheco, Jorge Jadid & António da Cruz Tarelho, Luís & Silva, Valter & Cardoso, João Sousa & Silveira, José Luz & Tuna, Celso Eduardo, 2021. "Evaluation of cogeneration alternative systems integrating biomass gasification applied to a Brazilian sugar industry," Renewable Energy, Elsevier, vol. 178(C), pages 318-333.
    7. Wiranarongkorn, Kunlanan & Im-orb, Karittha & Panpranot, Joongjai & Maréchal, François & Arpornwichanop, Amornchai, 2021. "Exergy and exergoeconomic analyses of sustainable furfural production via reactive distillation," Energy, Elsevier, vol. 226(C).
    8. Bechara, Rami & Gomez, Adrien & Saint-Antonin, Valérie & Schweitzer, Jean-Marc & Maréchal, François & Ensinas, Adriano, 2018. "Review of design works for the conversion of sugarcane to first and second-generation ethanol and electricity," Renewable and Sustainable Energy Reviews, Elsevier, vol. 91(C), pages 152-164.
    9. Aghbashlo, Mortaza & Tabatabaei, Meisam & Karimi, Keikhosro, 2016. "Exergy-based sustainability assessment of ethanol production via Mucor indicus from fructose, glucose, sucrose, and molasses," Energy, Elsevier, vol. 98(C), pages 240-252.
    10. Díaz Pérez, Álvaro A. & Escobar Palacio, José C. & Venturini, Osvaldo J. & Martínez Reyes, Arnaldo M. & Rúa Orozco, Dimas J. & Silva Lora, Electo E. & Almazán del Olmo, Oscar A., 2018. "Thermodynamic and economic evaluation of reheat and regeneration alternatives in cogeneration systems of the Brazilian sugarcane and alcohol sector," Energy, Elsevier, vol. 152(C), pages 247-262.
    11. Bechara, Rami & Gomez, Adrien & Saint-Antonin, Valérie & Schweitzer, Jean-Marc & Maréchal, François, 2016. "Methodology for the design and comparison of optimal production configurations of first and first and second generation ethanol with power," Applied Energy, Elsevier, vol. 184(C), pages 247-265.
    12. Palacios-Bereche, M.C. & Palacios-Bereche, R. & Ensinas, A.V. & Gallego, A. Garrido & Modesto, Marcelo & Nebra, S.A., 2022. "Brazilian sugar cane industry – A survey on future improvements in the process energy management," Energy, Elsevier, vol. 259(C).
    13. Fukushima, Nilton Asao & Palacios-Bereche, Milagros Cecilia & Palacios-Bereche, Reynaldo & Nebra, Silvia Azucena, 2019. "Energy analysis of the ethanol industry considering vinasse concentration and incineration," Renewable Energy, Elsevier, vol. 142(C), pages 96-109.
    14. Peters, Jens F. & Petrakopoulou, Fontina & Dufour, Javier, 2015. "Exergy analysis of synthetic biofuel production via fast pyrolysis and hydroupgrading," Energy, Elsevier, vol. 79(C), pages 325-336.
    15. Felipe Godoy Righetto & Carlos Eduardo Keutenedjian Mady, 2023. "Exergy Analysis of a Sugarcane Crop: A Planting-to-Harvest Approach," Sustainability, MDPI, vol. 15(20), pages 1-14, October.
    16. João Paulo Guerra & Fernando Henrique Cardoso & Alex Nogueira & Luiz Kulay, 2018. "Thermodynamic and Environmental Analysis of Scaling up Cogeneration Units Driven by Sugarcane Biomass to Enhance Power Exports," Energies, MDPI, vol. 11(1), pages 1-23, January.
    17. Palacios-Bereche, Reynaldo & Ensinas, Adriano V. & Modesto, Marcelo & Nebra, Silvia A., 2015. "Double-effect distillation and thermal integration applied to the ethanol production process," Energy, Elsevier, vol. 82(C), pages 512-523.
    18. Nakashima, R.N. & de Oliveira Junior, S., 2020. "Comparative exergy assessment of vinasse disposal alternatives: Concentration, anaerobic digestion and fertirrigation," Renewable Energy, Elsevier, vol. 147(P1), pages 1969-1978.

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