Reducing nitrogen crossover in microbial reverse-electrodialysis cells by using adjacent anion exchange membranes and anion exchange resin

Handle URI:
http://hdl.handle.net/10754/599478
Title:
Reducing nitrogen crossover in microbial reverse-electrodialysis cells by using adjacent anion exchange membranes and anion exchange resin
Authors:
Wallack, Maxwell J.; Geise, Geoffrey M.; Hatzell, Marta C.; Hickner, Michael A.; Logan, Bruce E.
Abstract:
Microbial reverse electrodialysis cells (MRECs) combine power generation from salinity gradient energy using reverse electrodialysis (RED), with power generation from organic matter using a microbial fuel cell. Waste heat can be used to distill ammonium bicarbonate into high (HC) and low salt concentration (LC) solutions for use in the RED stack, but nitrogen crossover into the anode chamber must be minimized to avoid ammonia loses, and foster a healthy microbial community. To reduce nitrogen crossover, an additional low concentration (LC) chamber was inserted before the anode using an additional anion exchange membrane (AEM) next to another AEM, and filled with different amounts of anion or cation ion exchange resins. Addition of the extra AEM increased the ohmic resistance of the test RED stack from 103 Ω cm2 (1 AEM) to 295 Ω cm2 (2 AEMs). However, the use of the anion exchange resin decreased the solution resistance of the LC chamber by 74% (637 Ω cm2, no resin; 166 Ω cm2 with resin). Nitrogen crossover into the anode chamber was reduced by up to 97% using 50% of the chamber filled with an anion exchange resin compared to the control (no additional chamber). The added resistance contributed by the use of the additional LC chamber could be compensated for by using additional LC and HC membrane pairs in the RED stack.
Citation:
Wallack MJ, Geise GM, Hatzell MC, Hickner MA, Logan BE (2015) Reducing nitrogen crossover in microbial reverse-electrodialysis cells by using adjacent anion exchange membranes and anion exchange resin. Environ Sci: Water Res Technol 1: 865–873. Available: http://dx.doi.org/10.1039/c5ew00160a.
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Environ. Sci.: Water Res. Technol.
KAUST Grant Number:
KUS-I1-003-13
Issue Date:
2015
DOI:
10.1039/c5ew00160a
Type:
Article
ISSN:
2053-1400; 2053-1419
Sponsors:
This research was supported by Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST), and Department of Energy Cooperative Agreement DE-EE0005750.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorWallack, Maxwell J.en
dc.contributor.authorGeise, Geoffrey M.en
dc.contributor.authorHatzell, Marta C.en
dc.contributor.authorHickner, Michael A.en
dc.contributor.authorLogan, Bruce E.en
dc.date.accessioned2016-02-28T05:51:52Zen
dc.date.available2016-02-28T05:51:52Zen
dc.date.issued2015en
dc.identifier.citationWallack MJ, Geise GM, Hatzell MC, Hickner MA, Logan BE (2015) Reducing nitrogen crossover in microbial reverse-electrodialysis cells by using adjacent anion exchange membranes and anion exchange resin. Environ Sci: Water Res Technol 1: 865–873. Available: http://dx.doi.org/10.1039/c5ew00160a.en
dc.identifier.issn2053-1400en
dc.identifier.issn2053-1419en
dc.identifier.doi10.1039/c5ew00160aen
dc.identifier.urihttp://hdl.handle.net/10754/599478en
dc.description.abstractMicrobial reverse electrodialysis cells (MRECs) combine power generation from salinity gradient energy using reverse electrodialysis (RED), with power generation from organic matter using a microbial fuel cell. Waste heat can be used to distill ammonium bicarbonate into high (HC) and low salt concentration (LC) solutions for use in the RED stack, but nitrogen crossover into the anode chamber must be minimized to avoid ammonia loses, and foster a healthy microbial community. To reduce nitrogen crossover, an additional low concentration (LC) chamber was inserted before the anode using an additional anion exchange membrane (AEM) next to another AEM, and filled with different amounts of anion or cation ion exchange resins. Addition of the extra AEM increased the ohmic resistance of the test RED stack from 103 Ω cm2 (1 AEM) to 295 Ω cm2 (2 AEMs). However, the use of the anion exchange resin decreased the solution resistance of the LC chamber by 74% (637 Ω cm2, no resin; 166 Ω cm2 with resin). Nitrogen crossover into the anode chamber was reduced by up to 97% using 50% of the chamber filled with an anion exchange resin compared to the control (no additional chamber). The added resistance contributed by the use of the additional LC chamber could be compensated for by using additional LC and HC membrane pairs in the RED stack.en
dc.description.sponsorshipThis research was supported by Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST), and Department of Energy Cooperative Agreement DE-EE0005750.en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.titleReducing nitrogen crossover in microbial reverse-electrodialysis cells by using adjacent anion exchange membranes and anion exchange resinen
dc.typeArticleen
dc.identifier.journalEnviron. Sci.: Water Res. Technol.en
dc.contributor.institutionDepartment of Civil and Environmental Engineering, The Pennsylvania State University, 212 Sackett Building, University Park, USAen
dc.contributor.institutionDepartment of Chemical Engineering, University of Virginia, 102 Engineers' Way, Charlottesville, USAen
dc.contributor.institutionGeorge W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, USAen
dc.contributor.institutionDepartment of Materials Science and Engineering, The Pennsylvania State University, University Park, USAen
kaust.grant.numberKUS-I1-003-13en
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