Patterned ion exchange membranes for improved power production in microbial reverse-electrodialysis cells

Jia Liu, Geoffrey M. Geise, Xi Luo, Huijie Hou, Fang Zhang, Yujie Feng, Michael A. Hickner, Bruce E. Logan

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Power production in microbial reverse-electrodialysis cells (MRCs) can be limited by the internal resistance of the reverse electrodialysis stack. Typical MRC stacks use non-conductive spacers that block ion transport by the so-called spacer shadow effect. These spacers can be relatively thick compared to the membrane, and thus they increase internal stack resistance due to high solution (ohmic) resistance associated with a thick spacer. New types of patterned anion and cation exchange membranes were developed by casting membranes to create hemispherical protrusions on the membranes, enabling fluid flow between the membranes without the need for a non-conductive spacer. The use of the patterned membrane decreased the MRC stack resistance by ∼22 Ω, resulting in a 38% increase in power density from 2.50 ± 0.04 W m-2 (non-patterned membrane with a non-conductive spacer) to 3.44 ± 0.02 W m-2 (patterned membrane). The COD removal rate, coulombic efficiency, and energy efficiency of the MRC also increased using the patterned membranes compared to the non-patterned membranes. These results demonstrate that these patterned ion exchange membranes can be used to improve performance of an MRC.

Original languageEnglish (US)
Pages (from-to)437-443
Number of pages7
JournalJournal of Power Sources
Volume271
DOIs
StatePublished - Dec 20 2014

Fingerprint

electrodialysis
Ion exchange membranes
Electrodialysis
membranes
Membranes
spacers
cells
ions
Acoustic impedance
crack opening displacement
Anions
Energy efficiency
Cations
Flow of fluids
Ion exchange
fluid flow
Casting
Negative ions
radiant flux density
Positive ions

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

Liu, Jia ; Geise, Geoffrey M. ; Luo, Xi ; Hou, Huijie ; Zhang, Fang ; Feng, Yujie ; Hickner, Michael A. ; Logan, Bruce E. / Patterned ion exchange membranes for improved power production in microbial reverse-electrodialysis cells. In: Journal of Power Sources. 2014 ; Vol. 271. pp. 437-443.
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abstract = "Power production in microbial reverse-electrodialysis cells (MRCs) can be limited by the internal resistance of the reverse electrodialysis stack. Typical MRC stacks use non-conductive spacers that block ion transport by the so-called spacer shadow effect. These spacers can be relatively thick compared to the membrane, and thus they increase internal stack resistance due to high solution (ohmic) resistance associated with a thick spacer. New types of patterned anion and cation exchange membranes were developed by casting membranes to create hemispherical protrusions on the membranes, enabling fluid flow between the membranes without the need for a non-conductive spacer. The use of the patterned membrane decreased the MRC stack resistance by ∼22 Ω, resulting in a 38{\%} increase in power density from 2.50 ± 0.04 W m-2 (non-patterned membrane with a non-conductive spacer) to 3.44 ± 0.02 W m-2 (patterned membrane). The COD removal rate, coulombic efficiency, and energy efficiency of the MRC also increased using the patterned membranes compared to the non-patterned membranes. These results demonstrate that these patterned ion exchange membranes can be used to improve performance of an MRC.",
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Patterned ion exchange membranes for improved power production in microbial reverse-electrodialysis cells. / Liu, Jia; Geise, Geoffrey M.; Luo, Xi; Hou, Huijie; Zhang, Fang; Feng, Yujie; Hickner, Michael A.; Logan, Bruce E.

In: Journal of Power Sources, Vol. 271, 20.12.2014, p. 437-443.

Research output: Contribution to journalArticle

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