Assessment of bioelectricity production in microbial fuel cells through series and parallel connections

Tahere Jafary, Mostafa Rahimnejad, Ali Asghar Ghoreyshi, Ghasem Najafpour, Fahime Hghparast, Wan Ramli Wan Daud

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Microbial fuel cell (MFC) units which are connected in series and parallel, may increase MFC performance in forms of voltage and current respectively. In this research three individual MFC units were connected with different concentrations (10, 20 and 30 g l-1) of glucose, fructose and sucrose. Generated power and current were analyzed through polarization and voltage curves. Parallel connections of three units, which fed with 10 g l -1 of each substrate, resulted in voltage and power densities of 0.65 V and 72.77 mW m-2, respectively. This configuration produced current density of 191.36 mA m-2 which was approximately three times higher than a single unit. By similar configuration but in series, produced voltage was increased to 1.78 V, as long as power and current densities were about at the same level of one single unit (52.35 mW m-2and 57.6 mA m-2). Substrate concentration enhancement to 20 and 30 g l -1 resulted in the same magnitude of increase for cell performances compared to the single unit results. Serial connection of 20 g l-1 of three substrates (glucose, fructose and sucrose) showed the highest results compared to other understudied substrate concentrations; 109.45 mW m -2 of power density, 98.14 mA m-2 of current density and 2.042 V as voltage. Shift of MFC configuration to parallel connection demonstrated 381.44 mA m-2, 128.72 mW m-2 and 0.68 V as current, power densities and voltage respectively. This configuration corresponds to the lowest calculated internal resistance.

Original languageEnglish
Pages (from-to)256-262
Number of pages7
JournalEnergy Conversion and Management
Volume75
DOIs
Publication statusPublished - 2013

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Bioelectric phenomena
Microbial fuel cells
Electric potential
Fructose
Current density
Sugar (sucrose)
Substrates
Glucose
Polarization

Keywords

  • Internal resistance
  • Microbial fuel cell
  • Polarization and voltage curves
  • Series and parallel connection

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Nuclear Energy and Engineering
  • Renewable Energy, Sustainability and the Environment

Cite this

Assessment of bioelectricity production in microbial fuel cells through series and parallel connections. / Jafary, Tahere; Rahimnejad, Mostafa; Ghoreyshi, Ali Asghar; Najafpour, Ghasem; Hghparast, Fahime; Wan Daud, Wan Ramli.

In: Energy Conversion and Management, Vol. 75, 2013, p. 256-262.

Research output: Contribution to journalArticle

Jafary, Tahere ; Rahimnejad, Mostafa ; Ghoreyshi, Ali Asghar ; Najafpour, Ghasem ; Hghparast, Fahime ; Wan Daud, Wan Ramli. / Assessment of bioelectricity production in microbial fuel cells through series and parallel connections. In: Energy Conversion and Management. 2013 ; Vol. 75. pp. 256-262.
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AB - Microbial fuel cell (MFC) units which are connected in series and parallel, may increase MFC performance in forms of voltage and current respectively. In this research three individual MFC units were connected with different concentrations (10, 20 and 30 g l-1) of glucose, fructose and sucrose. Generated power and current were analyzed through polarization and voltage curves. Parallel connections of three units, which fed with 10 g l -1 of each substrate, resulted in voltage and power densities of 0.65 V and 72.77 mW m-2, respectively. This configuration produced current density of 191.36 mA m-2 which was approximately three times higher than a single unit. By similar configuration but in series, produced voltage was increased to 1.78 V, as long as power and current densities were about at the same level of one single unit (52.35 mW m-2and 57.6 mA m-2). Substrate concentration enhancement to 20 and 30 g l -1 resulted in the same magnitude of increase for cell performances compared to the single unit results. Serial connection of 20 g l-1 of three substrates (glucose, fructose and sucrose) showed the highest results compared to other understudied substrate concentrations; 109.45 mW m -2 of power density, 98.14 mA m-2 of current density and 2.042 V as voltage. Shift of MFC configuration to parallel connection demonstrated 381.44 mA m-2, 128.72 mW m-2 and 0.68 V as current, power densities and voltage respectively. This configuration corresponds to the lowest calculated internal resistance.

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