Improving the energy efficiency of an electrodialytic process to extract phosphorus from municipal solid waste digestate through different strategies.

Oliveira, Verónica; Kirkelund, Gunvor M.; Monteiro, M.C.H.; Labrincha, João; Ferreira, Célia D.

Publication

Improving the energy efficiency of an electrodialytic process to extract phosphorus from municipal solid waste digestate through different strategies.

2019Journal article

dc.contributor.author	Oliveira, Verónica
dc.contributor.author	Kirkelund, Gunvor M.
dc.contributor.author	Monteiro, M.C.H.
dc.contributor.author	Labrincha, João
dc.contributor.author	Ferreira, Célia D.
dc.date.accessioned	2019-06-21T00:27:54Z
dc.date.available	2019-06-21T00:27:54Z
dc.date.issued	2019
dc.description.abstract	This work assesses the possibility of energy optimisation during the electrodialytic extraction of phosphorus from the municipal solid waste digestate. Strategies tested for energy optimisation consisted in (i) using a dualstage extraction approach; (ii) replacement of continuous stirring by pulse stirring and; (iii) utilisation of pulse electric current as an alternative to a constant current. Experiments were carried out using different stirring profiles (continuous stirring, pulsed stirring, manual stirring and no stirring) and different profiles for generating the electric field (continuous current and pulsed current). Dual-stage approach decreased the energy consumption by 30%. Energy was mainly used in the stirring operation (80%). Applying this strategy caused a faster acidification of the waste suspension and reduced the time required for the extraction. As for the second strategy, use of pulse stirring, it is possible to save energy by operating the stirrer 25% of the time, without compromising the phosphorus extraction values, which are close to 90%. Corresponding energy savings reached 70%. The third strategy tested, use of pulse current, had as side-effect a significant decrease of the phosphorus extracted, so the implementation of pulse current is not recommended. Overall, the energy efficiency of the electrodialytic extraction of phosphorus can be improved by 80% through the use of the dual-stage approach and the use of stirring for 25% of the time. There is also a potential in further reducing the energy use by further improving the stirring system.	pt_PT
dc.description.version	info:eu-repo/semantics/acceptedVersion	pt_PT
dc.identifier.citation	Oliveira, Verónica [et al.] (2019) - Improving the energy efficiency of an electrodialytic process to extract phosphorus from municipal solid waste digestate through different strategies. Applied Energy. ISSN 0306-2619. 247. p. 182-189.	pt_PT
dc.identifier.doi	10.1016/j.apenergy.2019.03.175	pt_PT
dc.identifier.issn	0306-2619
dc.identifier.uri	http://hdl.handle.net/10400.11/6586
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.publisher	Elsevier	pt_PT
dc.relation.publisherversion	https://www.sciencedirect.com/science/article/pii/S0306261919305835	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	pt_PT
dc.subject	Current	pt_PT
dc.subject	Stirring	pt_PT
dc.subject	Electrodialytic process	pt_PT
dc.subject	Municipal solid waste	pt_PT
dc.subject	Phosphorus extraction	pt_PT
dc.subject	Energy consumption	pt_PT
dc.title	Improving the energy efficiency of an electrodialytic process to extract phosphorus from municipal solid waste digestate through different strategies.	pt_PT
dc.type	journal article
dspace.entity.type	Publication
oaire.citation.endPage	189	pt_PT
oaire.citation.startPage	182	pt_PT
oaire.citation.title	Applied Energy	pt_PT
oaire.citation.volume	247	pt_PT
person.familyName	Costa Oliveira
person.familyName	Monteiro
person.familyName	Labrincha
person.familyName	Dias-Ferreira
person.givenName	Verónica
person.givenName	M.C.H.
person.givenName	Joao
person.givenName	Celia
person.identifier.ciencia-id	6318-20F3-86AF
person.identifier.ciencia-id	5D12-6B5C-23F1
person.identifier.ciencia-id	D819-2C2C-7A16
person.identifier.ciencia-id	931E-FBDE-2098
person.identifier.orcid	0000-0001-6012-920X
person.identifier.orcid	0000-0003-0101-1599
person.identifier.orcid	0000-0003-4782-1685
person.identifier.orcid	0000-0002-7456-2538
person.identifier.rid	B-3984-2010
person.identifier.rid	D-5293-2011
person.identifier.scopus-author-id	7003372169
person.identifier.scopus-author-id	55037188000
rcaap.rights	restrictedAccess	pt_PT
rcaap.type	article	pt_PT
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