Evaluation of the phenol degradation capacity of microalgae-bacteria consortia from the bay of Cartagena, Colombia

  • Daniela Mora-Salguero Universidad de Los Andes
  • Martha Josefina Vives Flórez Universidad de Los Andes
  • Johanna Husserl Orjuela Universidad de Los Andes
  • Miguel Fernández-Niño Universidad de Los Andes
  • Andrés Fernando González Barrios Universidad de Los Andes
Keywords: Bioremediation, microalgae-bacteria, consortium, phenol degradation, hydrocarbons

Abstract

 The development of new technologies for environmental reparation has allowed the application of inexpensive alternatives such as bioremediation, which has a high potential to treat ecosystems polluted with hydrocarbons. Microalgae-bacteria consortia have been identified as an efficient alternative for the detoxification of organic and inorganic contaminants and the removal of toxic compounds. This work investigates the phenol degradation potential of several alga-microbial consortia, which involved the algae Chlamydomonas reinhardtii and an osmotolerant phenol-resistant bacterial strain isolated from the bay of Cartagena, Colombia. A total of three bacterial strains were tested (i.e. Stenotrophomonas maltophilia, Microbacterium paraoxydans and Paenibacillus lactis) individually and in consortium with C. reinhardtii. Our data indicate a significant increase in the growth rate and a reduction in the lag phase of microorganisms in the consortium as compared to microorganisms growing in isolation. Interestingly, the inoculum ratio 2:1 (bacteria-microalgae) was shown to be the most robust taking into account that both microorganisms improved their growth. Afterward, the phenol degradation capacity of pure cultures and consortia in the presence of different phenol concentrations was evaluated. Our results reveal that such consortia perform better at low phenol concentrations; more specifically, the consortium Microbacterium paraoxydans-Chlamydomonas reinhardtii was the most effective: it reached a 49.89% phenol removal.

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Author Biographies

Daniela Mora-Salguero, Universidad de Los Andes

Bachelor of Chemical Engineer, Grupo de Diseño de Productos y Procesos (GDPP), Department of Chemical Engineering, Universidad de Los Andes, Bogotá-Colombia, da.mora1964@uniandes.edu.co

Martha Josefina Vives Flórez, Universidad de Los Andes

PhD in Science-Biology, Centro de Investigación en Microbiología (CIMIC), Universidad de Los Andes, Bogotá-Colombia, mvives@uniandes.edu.co

Johanna Husserl Orjuela, Universidad de Los Andes

PhD in Environmental Engineering, Centro de Investigaciones en Ingeniería Ambiental (CIIA), Civil and Environmental Engineering, Universidad de Los Andes, Bogotá-Colombia, jhusserl@uniandes.edu.co

Miguel Fernández-Niño, Universidad de Los Andes

PhD in Biochemical Engineering, Grupo de Diseño de Productos y Procesos (GDPP), Department of Chemical Engineering, Universidad de Los Andes, Bogotá-Colombia, ma.fernandezn@uniandes.edu.co

Andrés Fernando González Barrios, Universidad de Los Andes

PhD in Chemical Engineering, Grupo de Diseño de Productos y Procesos (GDPP), Department of Chemical Engineering, Universidad de Los Andes, Bogotá-Colombia, andgonza@uniandes.edu.co

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Published
2019-01-15
How to Cite
Mora-Salguero, D., Vives Flórez, M., Husserl Orjuela, J., Fernández-Niño, M., & González Barrios, A. (2019). Evaluation of the phenol degradation capacity of microalgae-bacteria consortia from the bay of Cartagena, Colombia. TecnoLógicas, 22(44), 149-158. https://doi.org/10.22430/22565337.1179
Section
Research Papers