Feasibility study of the use of liquid waste in the cultivation of microalgae Chlorella sp aimed at producing biofuels

Authors

  • Tamires de Queiroz Vieira Universidade Federal da Paraíba, Campina Grande, PB
  • Weruska Brasileiro Ferreira Universidade Estadual da Paraíba, Campina Grande, PB
  • Hélvia Waleska Casullo de Araújo Universidade Estadual da Paraíba, Campina Grande, PB
  • Tássio Henrique Cavalcanti da Silva Cunha Universidade Estadual da Paraíba, Campina Grande, PB
  • Iana Chaiene de Araujo Vidal Universidade Estadual da Paraíba, Campina Grande, PB
  • Débora Jamila Nóbrega de Melo Universidade Estadual da Paraíba, Campina Grande, PB

DOI:

https://doi.org/10.5902/2236130813544

Keywords:

Biofuels, Microalgae, Vinasse, Glycerin

Abstract

The world is experiencing a global double crisis due to excessive use of fossil fuels and their harmful effects on the environment. Therefore, it is essential to obtain renewable energy sources. Thus arise the microalgae as an attractive option for renewable energy generation, as some species of microalgae contain lipids and carbohydrates that can be extracted for biofuel production. Microalgae also contribute to reducing the inappropriate release of wastewater, because they can be grown in culture media containing wastewater, reducing the pollution effect of the liquid waste. This work studied the cell growth of microalgae Chlorella sp in mixotróficos crops, through the addition of wastewater to the culture medium Bold’s Basal Medium. First glycerin used to culture medium in different ratios (2%, 4% and 10%), the results were not satisfactory for the development of microalgae studied, making it impossible to use glycerin for the cultivation of Chlorella sp. The second step consisted of supplementation of vinasse to the medium at different concentrations (10%, 15%, 20% and 25%), the results were satisfactory, since the slop had nutritional characteristics for the growth of microalgae. The proportion of vinasse that better growth was obtained with supplementation of 10% where found excellent adaptation of the cells to the new composition of the culture medium. With vinasse at levels greater than 10% in half, noted greater difficulty in cell growth due to excessive suspended material present in the vinasse favoring the drag of microalgae. Therefore, the results obtained from the use of vinasse concluded that its use is feasible for the cultivation of Chlorella sp, besides favoring a suitable destination for the liquid residue of sugarcane industries, also promotes the development of microalgae, enabling generation of new sustainable sources of renewable energy.

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Author Biographies

Tamires de Queiroz Vieira, Universidade Federal da Paraíba, Campina Grande, PB

Engenheira Sanitarista e Ambiental pela Universidade Estadual da Paraíba (UEPB). Pós-graduanda em Engenharia e Segurança do Trabalho pelo Instituto de Educação Superior da Paraíba (IESP).

Weruska Brasileiro Ferreira, Universidade Estadual da Paraíba, Campina Grande, PB

Engenheira Química pela Universidade Federal da Paraíba (UFPB). Mestre em Engenharia Química pela Universidade Federal de Campina Grande (UFCG). Doutora em Engenharia Química pela Universidade Federal de Campina Grande (UFCG). Professora do quadro efetivo doutor De- nivel 1a da Universidade Estadual da Paraíba (UEPB).

Hélvia Waleska Casullo de Araújo, Universidade Estadual da Paraíba, Campina Grande, PB

Engenheira Química pela Universidade Federal da Paraíba (UFPB).  Mestre em Desenvolvimento e Meio Ambiente pela Universidade Federal da Paraíba (UFPB). Doutora em Biotecnologia em Recursos Naturais pela Rede Nordeste em Biotecnologia (RENORBIO) (UECE/UFPE/UNICAP). Especialização em Engenharia e Segurança no Trabalho pela Universidade Federal da Paraíba (UFPB). Professora efetiva da Universidade Estadual da Paraíba (UEPB) locada no Departamento de Química.

Tássio Henrique Cavalcanti da Silva Cunha, Universidade Estadual da Paraíba, Campina Grande, PB

Graduando em Engenharia Sanitária e Ambiental pela Universidade Estadual da Paraíba (UEPB).

Iana Chaiene de Araujo Vidal, Universidade Estadual da Paraíba, Campina Grande, PB

Graduanda em Engenharia Sanitária e Ambiental pela Universidade Estadual da Paraíba (UEPB).

Débora Jamila Nóbrega de Melo, Universidade Estadual da Paraíba, Campina Grande, PB

Engenheira Química pela Universidade Federal de Campina Grande (UFCG). Mestranda em Engenharia Química pela Universidade Federal de Campina Grande (UFCG).

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Published

2014-09-01

How to Cite

Vieira, T. de Q., Ferreira, W. B., Araújo, H. W. C. de, Cunha, T. H. C. da S., Vidal, I. C. de A., & Melo, D. J. N. de. (2014). Feasibility study of the use of liquid waste in the cultivation of microalgae Chlorella sp aimed at producing biofuels. Monografias Ambientais, 13(4), 3477–3490. https://doi.org/10.5902/2236130813544

Issue

REMOA, V. 13, N. 4, SET.-DEZ., 2014

Section

ARTICLES

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