Microbial reverse-electrodialysis chemical-production cell for acid and alkali production

Handle URI:
http://hdl.handle.net/10754/598829
Title:
Microbial reverse-electrodialysis chemical-production cell for acid and alkali production
Authors:
Zhu, Xiuping; Hatzell, Marta C.; Cusick, Roland D.; Logan, Bruce E.
Abstract:
A new type of bioelectrochemical system, called a microbial reverse-electrodialysis chemical-production cell (MRCC), was developed to produce acid and alkali using energy derived from organic matter (acetate) and salinity gradients (NaCl solutions representative of seawater and river water). A bipolar membrane (BPM) was placed next to the anode to prevent Cl- contamination and acidification of the anolyte, and to produce protons for HCl recovery. A 5-cell paired reverse-electrodialysis (RED) stack provided the electrical energy required to overcome the BPM over-potential (0.3-0.6 V), making the overall process spontaneous. The MRCC reactor produced electricity (908 mW/m2) as well as concentrated acidic and alkaline solutions, and therefore did not require an external power supply. After a fed-batch cycle, the pHs of the chemical product solutions were 1.65 ± 0.04 and 11.98 ± 0.10, due to the production of 1.35 ± 0.13 mmol of acid, and 0.59 ± 0.14 mmol of alkali. The acid- and alkali-production efficiencies based on generated current were 58 ± 3% and 25 ± 3%. These results demonstrated proof-of-concept acid and alkali production using only renewable energy sources. © 2013 Elsevier B.V.
Citation:
Zhu X, Hatzell MC, Cusick RD, Logan BE (2013) Microbial reverse-electrodialysis chemical-production cell for acid and alkali production. Electrochemistry Communications 31: 52–55. Available: http://dx.doi.org/10.1016/j.elecom.2013.03.010.
Publisher:
Elsevier BV
Journal:
Electrochemistry Communications
KAUST Grant Number:
KUS-I1-003-13
Issue Date:
Jun-2013
DOI:
10.1016/j.elecom.2013.03.010
Type:
Article
ISSN:
1388-2481
Sponsors:
The authors acknowledge support from the King Abdullah University of Science and Technology (KAUST) by Award KUS-I1-003-13.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorZhu, Xiupingen
dc.contributor.authorHatzell, Marta C.en
dc.contributor.authorCusick, Roland D.en
dc.contributor.authorLogan, Bruce E.en
dc.date.accessioned2016-02-25T13:42:02Zen
dc.date.available2016-02-25T13:42:02Zen
dc.date.issued2013-06en
dc.identifier.citationZhu X, Hatzell MC, Cusick RD, Logan BE (2013) Microbial reverse-electrodialysis chemical-production cell for acid and alkali production. Electrochemistry Communications 31: 52–55. Available: http://dx.doi.org/10.1016/j.elecom.2013.03.010.en
dc.identifier.issn1388-2481en
dc.identifier.doi10.1016/j.elecom.2013.03.010en
dc.identifier.urihttp://hdl.handle.net/10754/598829en
dc.description.abstractA new type of bioelectrochemical system, called a microbial reverse-electrodialysis chemical-production cell (MRCC), was developed to produce acid and alkali using energy derived from organic matter (acetate) and salinity gradients (NaCl solutions representative of seawater and river water). A bipolar membrane (BPM) was placed next to the anode to prevent Cl- contamination and acidification of the anolyte, and to produce protons for HCl recovery. A 5-cell paired reverse-electrodialysis (RED) stack provided the electrical energy required to overcome the BPM over-potential (0.3-0.6 V), making the overall process spontaneous. The MRCC reactor produced electricity (908 mW/m2) as well as concentrated acidic and alkaline solutions, and therefore did not require an external power supply. After a fed-batch cycle, the pHs of the chemical product solutions were 1.65 ± 0.04 and 11.98 ± 0.10, due to the production of 1.35 ± 0.13 mmol of acid, and 0.59 ± 0.14 mmol of alkali. The acid- and alkali-production efficiencies based on generated current were 58 ± 3% and 25 ± 3%. These results demonstrated proof-of-concept acid and alkali production using only renewable energy sources. © 2013 Elsevier B.V.en
dc.description.sponsorshipThe authors acknowledge support from the King Abdullah University of Science and Technology (KAUST) by Award KUS-I1-003-13.en
dc.publisherElsevier BVen
dc.subjectBioenergyen
dc.subjectMicrobial fuel cellen
dc.subjectReverse electrodialysisen
dc.titleMicrobial reverse-electrodialysis chemical-production cell for acid and alkali productionen
dc.typeArticleen
dc.identifier.journalElectrochemistry Communicationsen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
kaust.grant.numberKUS-I1-003-13en
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