Mixotrophic operation of photo-bioelectrocatalytic fuel cell under anoxygenic microenvironment enhances the light dependent bioelectrogenic activity.

Bioengineering and Environmental Centre, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 607, India.
Bioresource Technology (Impact Factor: 5.04). 04/2012; 109:46-56. DOI: 10.1016/j.biortech.2011.12.135
Source: PubMed

ABSTRACT Electrogenic activity of photo-bioelectrocatalytic /photo-biological fuel cell (PhFC) was evaluated in a mixotrophic mode under anoxygenic microenvironment using photosynthetic consortia as biocatalyst. An acetate rich wastewater was used as anolyte for harnessing energy along with additional treatment. Mixotrophic operation facilitated good electrogenic activity and wastewater treatment associated with biomass growth. PhFC operation documented feasible microenvironment for the growth of photosynthetic bacteria compared to algae which was supported by pigment (total chlorophyll and bacteriochlorophyll) and diversity analysis. Pigment data also illustrated the association between bacterial and algal species. The synergistic interaction between anoxygenic and oxygenic photosynthesis was found to be suitable for PhFC operation. Light dependent deposition of electrons at electrode was relatively higher compared to dark dependent electron deposition under anoxygenic condition. PhFC documented for good volatile fatty acids removal by utilizing them as electron donor. Bioelectrochemical behavior of PhFC was evaluated by voltammetric and chronoamperometry analysis.

  • Source
    Renewable and Sustainable Energy Reviews 07/2014; 39:617-627. · 5.51 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Waste/wastewater signifies a potential renewable feedstock to generate various forms of bioenergy aside from the remediation process by regulating the biological process. Bioenergy has gained significant attention as a sustainable and futuristic alternative to fossil fuels. Using waste for bioenergy through its remediation has instigated considerable interest and has further opened a new avenue for the use of renewable and inexhaustible energy sources. This chapter attempts to cohesively outline various routes of possible value addition from waste remediation in concurrence with contemporary research. Biohydrogen, bioelectricity (through the microbial fuel cell), algae-based biodiesel, and bioplastics production in the context of waste/wastewater treatment are covered.
    Industrial Wastewater Treatment, Recycling and Reuse, First edited by V.V.Ranade and V.M.Bhandari, 07/2014: chapter Reorienting Waste Remediation Towards Harnessing Bioenergy: A Paradigm Shift (Chapter 6): pages 235–281; Butterworth-Heinemann and Elsevier., ISBN: 978-0-08-099968-5
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Microbial fuel cells (MFC) are bio-catalyzed electrochemical hybrid systems which function by converting chemical energy to electrical energy through a cascade of redox reactions in the presence of biocatalyst. The research on MFC has been intensified in the last few years due to its inherent ability to produce sustainable energy from renewable organic waste. The current review depicts an overview on the fundamental operational mechanism of MFC encompassing electromotive force, electron delivery, electron transfer, losses encountered during operation, etc. The specific function of physical, biological and operational factors on the bioelectrogenic activity is elaborated. In addition, the strategies to regulate the process towards enhancing the performance of the system have been discussed. The potential applications of MFC for energy generation, waste remediation and value added product recovery have also been elaborated.
    Renewable and Sustainable Energy Reviews 08/2014; 40:779-797. · 5.51 Impact Factor

Full-text (3 Sources)

Available from
May 28, 2014