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Optimal Operating Policy of a Fluidized Bed Bioreactor used for Mercury Uptake from Wastewaters by Using Immobilized P. Putida Cells

Author

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  • Gheorghe Maria
  • Andreea Georgiana Åžcoban

    (Department of Chemical & Biochemical Engineering, University Politehnica of Bucharest, Romania)

Abstract

A model-based analysis of a three-phase continuously operated fluidized-bed bioreactor (TPFB) is developed in order to determine the multi-objective optimal and sustainable operating policy of a TPFB used for removing mercury ions from wastewater. More specifically, the analysis is focus on finding the optimal feeding policy of alginate porous beads of known particle size containing immobilized biomass (P. putida bacteria) that minimize the biomass consumption, while keeping a quasi-constant high mercury removal conversion, under quasi-stable reactor performances. The extended bioreactor model is accounting for the biomass growth, biodegradation, and its partial leakage and washout. Bioreactor dynamics prediction has been generated by using a simple Michaelis-Menten kinetic model adopted from literature. The resulted optimal feeding policy of the bioreactor points out the importance of the adoption of an extended and adequate process/reactor model able to solve difficult engineering operation problems by quickly adjusting the feeding conditions according to the time-varying characteristics of the biomass culture, and to the limited possibilities to control the process during the wastewater residence time in the bioreactor.

Suggested Citation

  • Gheorghe Maria & Andreea Georgiana Åžcoban, 2017. "Optimal Operating Policy of a Fluidized Bed Bioreactor used for Mercury Uptake from Wastewaters by Using Immobilized P. Putida Cells," Current Trends in Biomedical Engineering & Biosciences, Juniper Publishers Inc., vol. 2(4), pages 66-72, March.
    • Handle: RePEc:adp:jctbeb:v:2:y:2017:i:4:p:66-72
    DOI: 10.19080/CTBEB.2017.02.555594
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