Phosphate recovery as struvite within a single chamber microbial electrolysis cell

Handle URI:
http://hdl.handle.net/10754/599180
Title:
Phosphate recovery as struvite within a single chamber microbial electrolysis cell
Authors:
Cusick, Roland D.; Logan, Bruce E.
Abstract:
An energy efficient method of concurrent hydrogen gas and struvite (MgNH 4PO 4·6H 2O) production was investigated based on bioelectrochemically driven struvite crystallization at the cathode of a single chamber microbial electrolysis struvite-precipitation cell (MESC). The MESC cathodes were either stainless steel 304 mesh or flat plates. Phosphate removal ranged from 20% to 40%, with higher removals obtained using mesh cathodes than with flat plates. Cathode accumulated crystals were verified as struvite using a scanning electron microscope capable of energy dispersive spectroscopy (SEM-EDS). Crystal accumulation did not affect the rate of hydrogen production in struvite reactors. The rate of struvite crystallization (g/m 2-h) and hydrogen production (m 3/m 3-d) were shown to be dependent on applied voltage and cathode material. Overall energy efficiencies (substrate and electricity) were high (73±4%) and not dependent on applied voltage. These results show that MESCs may be useful both as a method for hydrogen gas and struvite production. © 2011 Elsevier Ltd.
Citation:
Cusick RD, Logan BE (2012) Phosphate recovery as struvite within a single chamber microbial electrolysis cell. Bioresource Technology 107: 110–115. Available: http://dx.doi.org/10.1016/j.biortech.2011.12.038.
Publisher:
Elsevier BV
Journal:
Bioresource Technology
KAUST Grant Number:
KUS-I1-003-13
Issue Date:
Mar-2012
DOI:
10.1016/j.biortech.2011.12.038
PubMed ID:
22212692
Type:
Article
ISSN:
0960-8524
Sponsors:
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.authorCusick, Roland D.en
dc.contributor.authorLogan, Bruce E.en
dc.date.accessioned2016-02-25T13:54:24Zen
dc.date.available2016-02-25T13:54:24Zen
dc.date.issued2012-03en
dc.identifier.citationCusick RD, Logan BE (2012) Phosphate recovery as struvite within a single chamber microbial electrolysis cell. Bioresource Technology 107: 110–115. Available: http://dx.doi.org/10.1016/j.biortech.2011.12.038.en
dc.identifier.issn0960-8524en
dc.identifier.pmid22212692en
dc.identifier.doi10.1016/j.biortech.2011.12.038en
dc.identifier.urihttp://hdl.handle.net/10754/599180en
dc.description.abstractAn energy efficient method of concurrent hydrogen gas and struvite (MgNH 4PO 4·6H 2O) production was investigated based on bioelectrochemically driven struvite crystallization at the cathode of a single chamber microbial electrolysis struvite-precipitation cell (MESC). The MESC cathodes were either stainless steel 304 mesh or flat plates. Phosphate removal ranged from 20% to 40%, with higher removals obtained using mesh cathodes than with flat plates. Cathode accumulated crystals were verified as struvite using a scanning electron microscope capable of energy dispersive spectroscopy (SEM-EDS). Crystal accumulation did not affect the rate of hydrogen production in struvite reactors. The rate of struvite crystallization (g/m 2-h) and hydrogen production (m 3/m 3-d) were shown to be dependent on applied voltage and cathode material. Overall energy efficiencies (substrate and electricity) were high (73±4%) and not dependent on applied voltage. These results show that MESCs may be useful both as a method for hydrogen gas and struvite production. © 2011 Elsevier Ltd.en
dc.description.sponsorshipThis research was supported by Award KUS-I1-003-13 from the King Abdullah University of Science and Technology (KAUST).en
dc.publisherElsevier BVen
dc.subjectMicrobial electrochemical systemsen
dc.subjectMicrobial electrolysis cellen
dc.subjectPhosphate removalen
dc.subjectStruviteen
dc.titlePhosphate recovery as struvite within a single chamber microbial electrolysis cellen
dc.typeArticleen
dc.identifier.journalBioresource Technologyen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
kaust.grant.numberKUS-I1-003-13en

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