Production of engineered-biochar under different pyrolysis conditions for phosphorus removal from aqueous solution

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorNardis, Bárbara Olinda-
Autor(es): dc.creatorFranca, José Romão-
Autor(es): dc.creatorCarneiro, Jefferson Santana da Silva-
Autor(es): dc.creatorSoares, Jenaina Ribeiro-
Autor(es): dc.creatorGuilherme, Luiz Roberto Guimarães-
Autor(es): dc.creatorSilva, Carlos Alberto-
Autor(es): dc.creatorMelo, Leônidas Carrijo Azevedo-
Data de aceite: dc.date.accessioned2026-02-09T12:21:21Z-
Data de disponibilização: dc.date.available2026-02-09T12:21:21Z-
Data de envio: dc.date.issued2022-01-17-
Data de envio: dc.date.issued2022-01-17-
Data de envio: dc.date.issued2021-10-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/48871-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/abs/pii/S0048969721066377-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1159627-
Descrição: dc.descriptionPhosphorus (P) recovery from wastewater through biochar is an alternative to build a sustainable circular economy and save non-renewable P reservoirs. The efficiency of cations in removing P from wastewater under different pyrolysis conditions is still lacking. We aimed at studying P adsorption and release from biochar enriched with Al3+ and Mg2+, prepared under air-limited and N2-flow pyrolysis conditions. Biochar samples were produced from pig manure (PMB) and impregnated, separately, with 20% of AlCl3 and MgCl2 solutions on both pyrolysis conditions. The materials were characterized for pH, electrical conductivity (EC), total nutrient content, ash, specific surface area (SSA), pore-volume, FTIR, XRD, and SEM-EDX. Phosphorus adsorption was studied by kinetics and adsorption isotherms, as well as desorption. The biochar impregnated with Mg2+ and produced in the muffle furnace achieved the maximum P adsorption (231 mg g−1), and 100% of the adsorbed P was released in solutions of Mehlich-1 and citric acid 2%. The pyrolysis conditions had a small or no influence on the biochar properties governing P adsorption, such as chemical functional groups, surface area, quantity and size of pores, and formation of synthetic minerals. Therefore, it is possible to produce biochar without using N2 as a carrier gas when it comes to P adsorption studies. Mechanisms of P removal comprise precipitation with cations, surface complexation, ligand exchange reactions, and electrostatic attraction on the biochar surface. Overall, Mg-impregnated biochar is a suitable matrix to remove P from aqueous media and to add value to organic residues while producing an environmentally friendly material for reuse in soils.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceScience of the Total Environment-
Palavras-chave: dc.subjectWastewater cleaning-
Palavras-chave: dc.subjectEngineered-biochar-
Palavras-chave: dc.subjectBiochar-cation composites-
Palavras-chave: dc.subjectBiochar activation-
Palavras-chave: dc.subjectSecondary P sources-
Título: dc.titleProduction of engineered-biochar under different pyrolysis conditions for phosphorus removal from aqueous solution-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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