Microalgae as substrate in low cost terracotta-based microbial fuel cells: Novel application of the catholyte produced

Article English OPEN
Salar-García, M. J. ; Gajda, I. ; Ortiz-Martínez, V. M. ; Greenman, J. ; Hanczyc, M. ; de los Ríos, A. P. ; Ieropoulos, I. (2016)
  • Publisher: Elsevier
  • Journal: Bioresource Technology, volume 209, pages 380-385 (issn: 0960-8524)
  • Related identifiers: doi: 10.1016/j.biortech.2016.02.083
  • Subject: Waste Management and Disposal | Environmental Engineering | Bioengineering

In this work, the by-product generated during the operation of cylindrical MFCs, made out of terracotta, is investigated as a feasible means of degrading live microalgae for the first time. In addition to the low cost materials of this design, the reuse of the solution produced in the cathode renders the technology truly green and capable of generating bioenergy. In this study, the effect of a light/dark cycle or dark conditions only on the digestion of live microalgae with the catholyte is investigated. The results show that a combination of light/dark improves the degradation of algae and allows them to be used as substrate in the anode. The addition of 12.5 mL of a 1:1 mix of catholyte and microalgae (pre-digested over 5 days under light/dark) to the anode, increases the power generation from 7 µW to 44 µW once all the organic matter in the anode have been depleted.
  • References (6)

    [1] Al-Qasmi M,Member Nr, IAENG, Talebi S, Al-Rajhi S, Al-Barwani T., 2012. A review of effect of light on microalgae growth. Proceeding of the world congress on engineering 1, 4-6.

    [2] Bahadar A and Khan MB., 2013Progress in energy from microalgae: A review. Renew Sust Energ Rev. 27, 128-148.

    [4] Creutzig F, Ravindranath NH, Berndes G, Bolwig S et al., 2015. Bioenergy and climate change mitigation: an assessment. Glob Change Biol Bioenergy. 7(5), 916-944.

    [19] Schenk P, Thomas-Hall S, Stephens E, Marx U, Mussgnug J, Posten C, Kruse O, Hankamer B., 2008. Second generation biofuels: High efficiency microalgae for biodiesel production. Bioenergy Res, 1(1), 20-43.

    [20] Velasquez-Orta SB, Curtis TP and Logan BE., 2009. Energy from algae using microbial fuel cells. Biotechnol Bioeng, 103(6), 1068-1076.

    [21] Vergara-Fernández A, Vargas G, Alarcón N, Velasco A., 2008. Evaluation of marine algae as a source of biogas in a two-stage anaerobic reactor system. Biomass Bioenerg, 32(4), 338-344.

  • Metrics
    No metrics available
Share - Bookmark