Environmental assessment of the integrated bio-combustion process: A life cycle energy balance / Avaliação ambiental do processo integrado de bio-combustão: balanço energético do ciclo de vida

Authors

  • Ihana Aguiar Severo
  • Mariany Costa Deprá
  • Rafaela Basso Sartori
  • Rosangela Rodrigues Dias
  • Patrícia Arrojo Silva
  • Paola Lasta
  • Leila Queiroz Zepka
  • Eduardo Jacob Lopes

DOI:

https://doi.org/10.34117/bjdv5n10-078

Keywords:

microalgae, photobioreactor, combustion, process integration, life cycle assessment.

Abstract

The aim of the present study was to evaluate the life cycle energy balance of the integrated bio-combustion process. The life cycle analysis tool was applied to assess the environmental performance of the system. The experiments were performed in a bubble column photobioreactor with a volume of 2L, photon flux density of 150 µmol/m²/s, continuous aeration of 1VVM, and injection air-enriched with 15% of CO2. The photobioreactor exhaust gases were integrated into the bio-combustion furnace, which was designed on a lab-scale. The operational conditions were: initial coke mass of 1g, total combustion reaction time of 20 min, and airflow rate of 1 L/min. The energy balance was determined by equating of the energy produced by the required energy, followed by the net energy ratio. The results obtained showed a net energy ratio for the integrated process of 0.69, indicating an energy efficiency improvement close to 70%. Thus, the system has the potential to boost the sustainability of industrial facilities.

 

 

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Published

2019-10-07

How to Cite

Severo, I. A., Deprá, M. C., Sartori, R. B., Dias, R. R., Silva, P. A., Lasta, P., Zepka, L. Q., & Lopes, E. J. (2019). Environmental assessment of the integrated bio-combustion process: A life cycle energy balance / Avaliação ambiental do processo integrado de bio-combustão: balanço energético do ciclo de vida. Brazilian Journal of Development, 5(10), 18175–18183. https://doi.org/10.34117/bjdv5n10-078

Issue

Section

Original Papers