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dc.contributor.authorMayor, Álvaro
dc.contributor.authorReig, Mònica
dc.contributor.authorVecino Bello, Xanel 
dc.contributor.authorCortina, José Luis
dc.contributor.authorValderrama, César
dc.date.accessioned2023-06-28T11:51:03Z
dc.date.available2023-06-28T11:51:03Z
dc.date.issued2023-06-02
dc.identifier.citationMembranes, 13(6): 580 (2023)spa
dc.identifier.issn20770375
dc.identifier.urihttp://hdl.handle.net/11093/4975
dc.description.abstractThis study evaluates a hybrid system combining zeolites as a sorption stage and a hollow fiber membrane contactor (HFMC) for ammonia (NH3) recovery from treated urban wastewater. Ion exchange with zeolites was selected as an advanced pretreatment and concentration step before the HFMC. The system was tested with wastewater treatment plant (WWTP) effluent (mainstream, 50 mg N-NH4/L) and anaerobic digestion centrates (sidestream, 600–800 mg N-NH4/L) from another WWTP. Natural zeolite, primarily clinoptilolite, demonstrated effective desorption of retained ammonium using a 2% NaOH solution in a closed-loop configuration, resulting in an ammonia-rich brine that enabled over 95% NH3 recovery using polypropylene HFMCs. A 1 m3/h demonstration plant processed both urban wastewaters, which were pretreated by ultrafiltration, removing over 90% of suspended solids and 60–65% of COD. The 2% NaOH regeneration brines (2.4–5.6 g N-NH4/L) were treated in a closed-loop HFMC pilot system, producing 10–15% N streams with potential use as liquid fertilizers. The resulting ammonium nitrate was free of heavy metals and organic micropollutants, making it suitable for use as liquid fertilizer. This comprehensive N management solution for urban wastewater applications can contribute to local economies while achieving reduced N discharge and circularity goals.en
dc.description.sponsorshipLIFE ENRICH | Ref. LIFE16 ENV/ES/000375spa
dc.description.sponsorshipMinisterio de Ciencia e Innovación | Ref. PID2020-114401RB-C21spa
dc.description.sponsorshipMinisterio de Economía y Competitividad | Ref. CTM2017-85346-Rspa
dc.description.sponsorshipGeneralitat de Cataluña | Ref. 2017-SGR-312spa
dc.description.sponsorshipMinisterio de Ciencia e Innovación | Ref. RYC2021-030966-Ispa
dc.language.isoengspa
dc.publisherMembranesspa
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica, Técnica y de Innovación para el período 2021-2023/RYC2021-030966-I/ES
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-114401RB-C21/ES
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2017-85346-R/ES
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleAdvanced hybrid system for ammonium valorization as liquid fertilizer from treated urban wastewaters: validation of natural zeolites pretreatment and liquid-liquid membrane contactors at pilot plant scaleen
dc.typearticlespa
dc.rights.accessRightsopenAccessspa
dc.relation.projectIDinfo:eu-repo/grantAgreement/EU/H2020/823971spa
dc.identifier.doi10.3390/membranes13060580
dc.identifier.editorhttps://www.mdpi.com/2077-0375/13/6/580spa
dc.publisher.departamentoEnxeñaría químicaspa
dc.publisher.grupoinvestigacionEnxeñería Química 10spa
dc.subject.unesco3308.10 Tecnología de Aguas Residualesspa
dc.subject.unesco3101 Agroquímicaspa
dc.subject.unesco3303 Ingeniería y Tecnología Químicasspa
dc.date.updated2023-06-28T11:46:33Z
dc.computerCitationpub_title=Membranes|volume=13|journal_number=6|start_pag=580|end_pag=spa


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    Attribution 4.0 International
    Except where otherwise noted, this item's license is described as Attribution 4.0 International