A novel approach for nutrients recovery from municipal waste as biofertilizers by combining electrodialytic and gas permeable membrane technologies

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorOliveira, Verónica-
Autor(es): dc.creatorFerreira, Célia-
Autor(es): dc.creatorGonzález-García, Isabel-
Autor(es): dc.creatorLabrincha, João-
Autor(es): dc.creatorHorta, Carmo-
Autor(es): dc.creatorGarcía-González, María Cruz-
Data de aceite: dc.date.accessioned2022-09-01T13:00:46Z-
Data de disponibilização: dc.date.available2022-09-01T13:00:46Z-
Data de envio: dc.date.issued2022-03-04-
Data de envio: dc.date.issued2022-03-04-
Data de envio: dc.date.issued2021-04-15-
Data de envio: dc.date.issued2022-01-14-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/10400.2/11801-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/10400.2/11801-
Descrição: dc.descriptionThe recovery of valuable materials from waste fits the principle of circular economy and sustainable use of resources, but contaminants in the waste are still a major obstacle. This works proposes a novel approach to recover high-purity phosphorus (P) and nitrogen (N) from digestate of municipal solid waste based on the combination of two independent membrane processes: electrodialytic (ED) process to extract P, and gas permeable membranes (GPM) for N extraction. A laboratory ED cell was adapted to accommodate a GPM. The length of waste compartment (10 cm; 15 cm), current intensity (50 mA; 75 mA) and operation time (9 days; 12 days) were the variables tested. 81% of P in the waste was successfully extracted to the anolyte when an electric current of 75 mA was applied for 9 days, and 74% of NH4 + was extracted into an acid-trapping solution. The two purified nutrient solutions were subsequently used in the synthesis of a biofertilizer (secondary struvite) through precipitation, achieving an efficiency of 99.5%. The properties of the secondary struvite synthesized using N and P recovered from the waste were similar to secondary struvite formed using synthetic chemicals but the costs were higher due to the need to neutralize the acid-trapping solution, highlighting the need to further tune the process and make it economically more competitive. The high recycling rates of P and N achieved are encouraging and widen the possibility of replacing synthetic fertilizers, manufactured from finite sources, by secondary biofertilizers produced using nutrients extracted from wastes.-
Descrição: dc.descriptioninfo:eu-repo/semantics/publishedVersion-
Idioma: dc.languageen-
Direitos: dc.rightsrestrictedAccess-
Palavras-chave: dc.subjectPhosphorus-
Palavras-chave: dc.subjectNitrogen-
Palavras-chave: dc.subjectStruvite-
Palavras-chave: dc.subjectNutrient recycling-
Palavras-chave: dc.subjectWaste valorization-
Palavras-chave: dc.subjectSeawate-
Título: dc.titleA novel approach for nutrients recovery from municipal waste as biofertilizers by combining electrodialytic and gas permeable membrane technologies-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Aberto - Universidade Aberta (Portugal)

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