Production of hydrogen from domestic wastewater using a bioelectrochemically assisted microbial reactor (BEAMR)

Jenna Ditzig, Hong Liu, Bruce Ernest Logan

Research output: Contribution to journalArticle

214 Citations (Scopus)

Abstract

Hydrogen production from domestic wastewater was examined using a plain carbon electrode or graphite-granule packed-bed bioelectrochemically assisted microbial reactors (BEAMRs) capable of continuous or intermittent hydrogen release. When graphite granules were added to the anode chamber (packed-bed mode) current density was increased when the domestic wastewater had a high initial chemical oxygen demand (COD > 360 mg / L), and produced a maximum Coulombic efficiency of 26% (applied voltage of 0.41 V) and a maximum hydrogen recovery of 42% (applied voltage of 0.5 V). The packed-bed system successfully treated the wastewater, with removal efficiencies of biochemical oxygen demand (BOD), chemical oxygen demand (COD), and dissolved organic carbon (DOC) in the range of 87-100%. The final BOD of the treated wastewater was always reduced to less than 7.0 ± 0.2 mg / L. Overall hydrogen production based on COD removal was a maximum of 0.0125 mg - H2 / mg - COD (154 mL - H2 / g - COD versus a maximum possible conversion of 0.126 mg - H2 / mg - COD), with an energy requirement equivalent to 0.0116 mg - H2 / mg - COD, producing an 8% net yield of H2. These results demonstrate that a wastewater treatment based on a BEAMR reactor is feasible, but improvements are needed in hydrogen recoveries and Coulombic efficiencies to increase the overall hydrogen yield.

Original languageEnglish (US)
Pages (from-to)2296-2304
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume32
Issue number13
DOIs
StatePublished - Sep 1 2007

Fingerprint

Chemical oxygen demand
Wastewater
reactors
Hydrogen
oxygen
hydrogen
Packed beds
biochemical oxygen demand
beds
Biochemical oxygen demand
hydrogen production
Hydrogen production
Graphite
graphite
recovery
energy requirements
Recovery
carbon
Electric potential
electric potential

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

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abstract = "Hydrogen production from domestic wastewater was examined using a plain carbon electrode or graphite-granule packed-bed bioelectrochemically assisted microbial reactors (BEAMRs) capable of continuous or intermittent hydrogen release. When graphite granules were added to the anode chamber (packed-bed mode) current density was increased when the domestic wastewater had a high initial chemical oxygen demand (COD > 360 mg / L), and produced a maximum Coulombic efficiency of 26{\%} (applied voltage of 0.41 V) and a maximum hydrogen recovery of 42{\%} (applied voltage of 0.5 V). The packed-bed system successfully treated the wastewater, with removal efficiencies of biochemical oxygen demand (BOD), chemical oxygen demand (COD), and dissolved organic carbon (DOC) in the range of 87-100{\%}. The final BOD of the treated wastewater was always reduced to less than 7.0 ± 0.2 mg / L. Overall hydrogen production based on COD removal was a maximum of 0.0125 mg - H2 / mg - COD (154 mL - H2 / g - COD versus a maximum possible conversion of 0.126 mg - H2 / mg - COD), with an energy requirement equivalent to 0.0116 mg - H2 / mg - COD, producing an 8{\%} net yield of H2. These results demonstrate that a wastewater treatment based on a BEAMR reactor is feasible, but improvements are needed in hydrogen recoveries and Coulombic efficiencies to increase the overall hydrogen yield.",
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Production of hydrogen from domestic wastewater using a bioelectrochemically assisted microbial reactor (BEAMR). / Ditzig, Jenna; Liu, Hong; Logan, Bruce Ernest.

In: International Journal of Hydrogen Energy, Vol. 32, No. 13, 01.09.2007, p. 2296-2304.

Research output: Contribution to journalArticle

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