Magnesium-enriched poultry manure enhances phosphorus bioavailability in biochars

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorLeite, Aline do Amaral-
Autor(es): dc.creatorMelo, Leônidas Carrijo Azevedo-
Autor(es): dc.creatorHurtarte, Luis Carlos Colocho-
Autor(es): dc.creatorZuin, Lucia-
Autor(es): dc.creatorPiccolla, Cristiano Dela-
Autor(es): dc.creatorWerder, Don-
Autor(es): dc.creatorShabtai, Itamar-
Autor(es): dc.creatorLehmann, Johannes-
Data de aceite: dc.date.accessioned2026-02-09T12:32:39Z-
Data de disponibilização: dc.date.available2026-02-09T12:32:39Z-
Data de envio: dc.date.issued2023-11-20-
Data de envio: dc.date.issued2023-11-20-
Data de envio: dc.date.issued2023-08-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/58573-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0045653523010263-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1163419-
Descrição: dc.descriptionPyrolysis of calcium-rich feedstock (e.g., poultry manure) generates semi-crystalline and crystalline phosphorus (P) species, compromising its short-term availability to plants. However, enriching poultry manure with magnesium (Mg) before pyrolysis may improve the ability of biochar to supply P. This study investigated how increasing the Mg/Ca ratio and pyrolysis temperature of poultry manure affected its P availability and speciation. Mg enrichment by ∼2.1% increased P availability (extracted using 2% citric and formic acid) by 20% in Mg-biochar at pyrolysis temperatures up to 600 °C. Linear combination fitting of P K-edge XANES of biochar, and Mg/Ca stoichiometry, indicate that P species, mainly Ca–P and Mg–P, are altered after pyrolysis. At 300 °C, adding Mg as magnesium hydroxide [Mg(OH)2] created MgNH4PO4 (18%) and Mg3(PO4)2.8H2O (23%) in the biochar, while without addition of Mg Ca3(PO4)2 (11%) predominated, both differing only for pyrophosphate, 33 and 16%, respectively. Similarly, the P L2,3 edge XANES data of biochar made with Mg were indicative of either MgHPO4.3H2O or Mg3(PO4)2.8H2O, in comparison to CaHPO4.2H2O or Ca3(PO4)2 without Mg. More importantly, hydroxyapatite [Ca5(PO4)3(OH)] was not identified with Mg additions, while it was abundant in biochars produced without Mg both at 600 (12%) and 700 °C (32%). The presence of Mg formed Mg–P minerals that could enhance P mobility in soil more than Ca–P, and may have resulted in greater P availability in Mg-enriched biochars. Thus, a relatively low Mg enrichment can be an approach for designing and optimize biochar as a P fertilizer from P-rich excreta, with the potential to improve P availability and contribute to the sustainable use of organic residues.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceChemosphere-
Palavras-chave: dc.subjectLinear combination-
Palavras-chave: dc.subjectP speciation-
Palavras-chave: dc.subjectP extractions-
Palavras-chave: dc.subjectNutrient recycling-
Título: dc.titleMagnesium-enriched poultry manure enhances phosphorus bioavailability in biochars-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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