Applied Biochemistry and Biotechnology

, Volume 186, Issue 1, pp 40–53 | Cite as

Application of Physicochemical Treatment Allows Reutilization of Arthrospira platensis Exhausted Medium

An Investigation of Reusing Medium in Arthrospira platensis Cultivation
  • Lauris del Carmen Mejia-da-Silva
  • Marcelo Chuei Matsudo
  • Ana Lucia Morocho-Jacome
  • João Carlos Monteiro de CarvalhoEmail author


Since cultivations of Arthrospira platensis have a high water demand, it is necessary to develop treatment methods for reusing the exhausted medium that may prevent environmental problems and obtaining useful biomass. The exhausted Schlösser medium obtained from A. platensis batch cultivation in bench-scale mini-tanks was treated by varying concentrations of different coagulants, ferric chloride (6, 10, and 14 mg L−1) or ferric sulfate (15, 25, and 35 mg L−1) and powdered activated carbon (PAC, 30 and 50 mg L−1). Such treated effluent was restored with NaNO3 and reused in new cultivations of A. platensis performed in Erlenmeyer flasks. Reusing media through the cultivation of A. platensis showed satisfactory results, particularly in the medium treated with ferric chloride and PAC. The maximum cell concentration obtained in the flasks was 1093 mg L−1, which corresponded to the medium treated with ferric chloride (6 mg L−1) and PAC (30 mg L−1). This cellular growth was higher than in the medium treated with ferric sulfate and PAC, in which values of maximum cell concentration did not exceed 796 mg L−1. The cultures in the media after treatment did not modify the biomass composition. Thus, combined coagulation/adsorption processes, commonly used in water treatment processes, can be efficient and viable for treating exhausted medium of A. platensis, allowing the production of such biomass with the reduction of production cost and saving water.


Arthrospira platensis Coagulant Culture medium Effluent Microbial biomass Powdered activated carbon 



The authors are grateful to Fundação de Amparo à Pesquisa do Estado de São Paulo (processes 2011/52028-0 and 2012/08883-6) for financial support and fellowships.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Lauris del Carmen Mejia-da-Silva
    • 1
  • Marcelo Chuei Matsudo
    • 2
  • Ana Lucia Morocho-Jacome
    • 1
  • João Carlos Monteiro de Carvalho
    • 1
    Email author
  1. 1.Department of Biochemical and Pharmaceutical Technology, Faculty of Pharmaceutical SciencesUniversity of São PauloSão PauloBrazil
  2. 2.Institute of Natural ResourcesFederal University of ItajubáItajubáBrazil

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