High hydrogen production rate of microbial electrolysis cell (MEC) with reduced electrode spacing

Shaoan Cheng; Bruce E. Logan

doi:10.1016/j.biortech.2010.10.025

High hydrogen production rate of microbial electrolysis cell (MEC) with reduced electrode spacing

Shaoan Cheng, Bruce E. Logan

Research output: Contribution to journal › Article › peer-review

185 Scopus citations

Abstract

Practical applications of microbial electrolysis cells (MECs) require high hydrogen production rates and a compact reactor. These goals can be achieved by reducing electrode spacing but high surface area anodes are needed. The brush anode MEC with electrode spacing of 2cm had a higher hydrogen production rate and energy efficiency than an MEC with a flat cathode and a 1-cm electrode spacing. The maximum hydrogen production rate with a 2cm electrode spacing was 17.8m³/m³d at an applied voltage of E_ap=1V. Reducing electrode spacing increased hydrogen production rates at the lower applied voltages, but not at the higher (>0.6V) applied voltages. These results demonstrate that reducing electrode spacing can increase hydrogen production rate, but that the closest electrode spacing do not necessarily produce the highest possible hydrogen production rates.

Original language	English (US)
Pages (from-to)	3571-3574
Number of pages	4
Journal	Bioresource technology
Volume	102
Issue number	3
DOIs	https://doi.org/10.1016/j.biortech.2010.10.025
State	Published - Feb 2011

All Science Journal Classification (ASJC) codes

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2010.10.025

Cite this

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title = "High hydrogen production rate of microbial electrolysis cell (MEC) with reduced electrode spacing",

abstract = "Practical applications of microbial electrolysis cells (MECs) require high hydrogen production rates and a compact reactor. These goals can be achieved by reducing electrode spacing but high surface area anodes are needed. The brush anode MEC with electrode spacing of 2cm had a higher hydrogen production rate and energy efficiency than an MEC with a flat cathode and a 1-cm electrode spacing. The maximum hydrogen production rate with a 2cm electrode spacing was 17.8m3/m3d at an applied voltage of Eap=1V. Reducing electrode spacing increased hydrogen production rates at the lower applied voltages, but not at the higher (>0.6V) applied voltages. These results demonstrate that reducing electrode spacing can increase hydrogen production rate, but that the closest electrode spacing do not necessarily produce the highest possible hydrogen production rates.",

author = "Shaoan Cheng and Logan, \{Bruce E.\}",

note = "Funding Information: This research was supported by Air Products and Chemicals, Inc. and the National Science Foundation ( CBET-0730359 ).",

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AU - Cheng, Shaoan

AU - Logan, Bruce E.

N1 - Funding Information: This research was supported by Air Products and Chemicals, Inc. and the National Science Foundation ( CBET-0730359 ).

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N2 - Practical applications of microbial electrolysis cells (MECs) require high hydrogen production rates and a compact reactor. These goals can be achieved by reducing electrode spacing but high surface area anodes are needed. The brush anode MEC with electrode spacing of 2cm had a higher hydrogen production rate and energy efficiency than an MEC with a flat cathode and a 1-cm electrode spacing. The maximum hydrogen production rate with a 2cm electrode spacing was 17.8m3/m3d at an applied voltage of Eap=1V. Reducing electrode spacing increased hydrogen production rates at the lower applied voltages, but not at the higher (>0.6V) applied voltages. These results demonstrate that reducing electrode spacing can increase hydrogen production rate, but that the closest electrode spacing do not necessarily produce the highest possible hydrogen production rates.

AB - Practical applications of microbial electrolysis cells (MECs) require high hydrogen production rates and a compact reactor. These goals can be achieved by reducing electrode spacing but high surface area anodes are needed. The brush anode MEC with electrode spacing of 2cm had a higher hydrogen production rate and energy efficiency than an MEC with a flat cathode and a 1-cm electrode spacing. The maximum hydrogen production rate with a 2cm electrode spacing was 17.8m3/m3d at an applied voltage of Eap=1V. Reducing electrode spacing increased hydrogen production rates at the lower applied voltages, but not at the higher (>0.6V) applied voltages. These results demonstrate that reducing electrode spacing can increase hydrogen production rate, but that the closest electrode spacing do not necessarily produce the highest possible hydrogen production rates.

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High hydrogen production rate of microbial electrolysis cell (MEC) with reduced electrode spacing

Abstract

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