A new design enhances hydrogen production by G. Sulfurreducens PCA strain in a single-chamber microbial electrolysis cell (MEC)

Abudukeremu Kadier, Mohd. Sahaid Kalil, Azah Mohamed, Aidil Abdul Hamid

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Microbial electrolysis cell (MEC) is an innovative and green technology to generate hydrogen from a wide range of renewable energy sources and wastewater. At current stage, the performance of these systems is still far from real-world applications. The most likely limiting factors for successful commercialization of this technology are the large internal resistance, high fabrication and operational costs. The aim of the present study was to enhance hydrogen production, reduce the construction and operational costs in MECs via development of a novel MEC design. A single-chamber membrane-free MEC was designed and successfully produced hydrogen from organic substrate using a pure culture: Geobacter sulfurreducens PCA. The MEC system was operated with Platinum (Pt) cathode at applied voltage range of 0.6 V to 1.1 V. Geobacter sulfurreducens PCA strain and sodium acetate used as inoculum and a fuel sources, respectively. The conductivity of electrolyte solution in the MEC was 4.5 mS/cm. Due to an improved the MEC reactor architecture, the maximum hydrogen production rate (HPR) of 3.67 ± 0.03 m3 H2/m3 d with volumetric current density (IV) of 293.73 ± 1.18 A/m3 was achieved under an external applied voltage (Eap): 1.1 V. The highest overall hydrogen recovery (rH2) and overall energy efficiency (ŋE+s) were 91.80 ± 1.06% and 66.97 ± 0.09%, respectively.

Original languageEnglish
Pages (from-to)71-79
Number of pages9
JournalJurnal Teknologi
Volume79
Issue number5-3
DOIs
Publication statusPublished - 2017

Fingerprint

Regenerative fuel cells
Hydrogen production
Hydrogen
Environmental technology
Electric potential
Energy efficiency
Costs
Platinum
Wastewater
Cathodes
Current density
Electrolytes
Sodium
Membranes
Fabrication
Recovery
Substrates

Keywords

  • Applied voltage (E)
  • G. Sulfurreducens PCA strain
  • Hydrogen production rate (HPR)
  • Hydrogen recovery
  • Microbial electrolysis cell (MEC)

ASJC Scopus subject areas

  • Engineering(all)

Cite this

A new design enhances hydrogen production by G. Sulfurreducens PCA strain in a single-chamber microbial electrolysis cell (MEC). / Kadier, Abudukeremu; Kalil, Mohd. Sahaid; Mohamed, Azah; Abdul Hamid, Aidil.

In: Jurnal Teknologi, Vol. 79, No. 5-3, 2017, p. 71-79.

Research output: Contribution to journalArticle

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