Evaluation of low cost cathode materials for treatment of industrial and food processing wastewater using microbial electrolysis cells

Handle URI:
http://hdl.handle.net/10754/598249
Title:
Evaluation of low cost cathode materials for treatment of industrial and food processing wastewater using microbial electrolysis cells
Authors:
Tenca, Alberto; Cusick, Roland D.; Schievano, Andrea; Oberti, Roberto; Logan, Bruce E.
Abstract:
Microbial electrolysis cells (MECs) can be used to treat wastewater and produce hydrogen gas, but low cost cathode catalysts are needed to make this approach economical. Molybdenum disulfide (MoS2) and stainless steel (SS) were evaluated as alternative cathode catalysts to platinum (Pt) in terms of treatment efficiency and energy recovery using actual wastewaters. Two different types of wastewaters were examined, a methanol-rich industrial (IN) wastewater and a food processing (FP) wastewater. The use of the MoS2 catalyst generally resulted in better performance than the SS cathodes for both wastewaters, although the use of the Pt catalyst provided the best performance in terms of biogas production, current density, and TCOD removal. Overall, the wastewater composition was more of a factor than catalyst type for accomplishing overall treatment. The IN wastewater had higher biogas production rates (0.8-1.8 m3/m3-d), and COD removal rates (1.8-2.8 kg-COD/m3-d) than the FP wastewater. The overall energy recoveries were positive for the IN wastewater (3.1-3.8 kWh/kg-COD removed), while the FP wastewater required a net energy input of -0.7 - 1.2 kWh/kg-COD using MoS 2 or Pt cathodes, and -3.1 kWh/kg-COD with SS. These results suggest that MoS2 is the most suitable alternative to Pt as a cathode catalyst for wastewater treatment using MECs, but that net energy recovery will be highly dependent on the specific wastewater. © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Citation:
Tenca A, Cusick RD, Schievano A, Oberti R, Logan BE (2013) Evaluation of low cost cathode materials for treatment of industrial and food processing wastewater using microbial electrolysis cells. International Journal of Hydrogen Energy 38: 1859–1865. Available: http://dx.doi.org/10.1016/j.ijhydene.2012.11.103.
Publisher:
Elsevier BV
Journal:
International Journal of Hydrogen Energy
KAUST Grant Number:
KUS-I1-003-13
Issue Date:
Feb-2013
DOI:
10.1016/j.ijhydene.2012.11.103
Type:
Article
ISSN:
0360-3199
Sponsors:
The authors thank Air Products and Chemicals, Inc. for providing wastewater samples. This research was supported by Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST).
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorTenca, Albertoen
dc.contributor.authorCusick, Roland D.en
dc.contributor.authorSchievano, Andreaen
dc.contributor.authorOberti, Robertoen
dc.contributor.authorLogan, Bruce E.en
dc.date.accessioned2016-02-25T13:17:23Zen
dc.date.available2016-02-25T13:17:23Zen
dc.date.issued2013-02en
dc.identifier.citationTenca A, Cusick RD, Schievano A, Oberti R, Logan BE (2013) Evaluation of low cost cathode materials for treatment of industrial and food processing wastewater using microbial electrolysis cells. International Journal of Hydrogen Energy 38: 1859–1865. Available: http://dx.doi.org/10.1016/j.ijhydene.2012.11.103.en
dc.identifier.issn0360-3199en
dc.identifier.doi10.1016/j.ijhydene.2012.11.103en
dc.identifier.urihttp://hdl.handle.net/10754/598249en
dc.description.abstractMicrobial electrolysis cells (MECs) can be used to treat wastewater and produce hydrogen gas, but low cost cathode catalysts are needed to make this approach economical. Molybdenum disulfide (MoS2) and stainless steel (SS) were evaluated as alternative cathode catalysts to platinum (Pt) in terms of treatment efficiency and energy recovery using actual wastewaters. Two different types of wastewaters were examined, a methanol-rich industrial (IN) wastewater and a food processing (FP) wastewater. The use of the MoS2 catalyst generally resulted in better performance than the SS cathodes for both wastewaters, although the use of the Pt catalyst provided the best performance in terms of biogas production, current density, and TCOD removal. Overall, the wastewater composition was more of a factor than catalyst type for accomplishing overall treatment. The IN wastewater had higher biogas production rates (0.8-1.8 m3/m3-d), and COD removal rates (1.8-2.8 kg-COD/m3-d) than the FP wastewater. The overall energy recoveries were positive for the IN wastewater (3.1-3.8 kWh/kg-COD removed), while the FP wastewater required a net energy input of -0.7 - 1.2 kWh/kg-COD using MoS 2 or Pt cathodes, and -3.1 kWh/kg-COD with SS. These results suggest that MoS2 is the most suitable alternative to Pt as a cathode catalyst for wastewater treatment using MECs, but that net energy recovery will be highly dependent on the specific wastewater. © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.en
dc.description.sponsorshipThe authors thank Air Products and Chemicals, Inc. for providing wastewater samples. This research was supported by Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.subjectEnergy recoveryen
dc.subjectMECen
dc.subjectMethanolen
dc.subjectMolybdenum disulfideen
dc.subjectWastewateren
dc.titleEvaluation of low cost cathode materials for treatment of industrial and food processing wastewater using microbial electrolysis cellsen
dc.typeArticleen
dc.identifier.journalInternational Journal of Hydrogen Energyen
dc.contributor.institutionUniversita degli Studi di Milano, Milan, Italyen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
kaust.grant.numberKUS-I1-003-13en
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