Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/58573
Registro completo de metadados
Campo DCValorIdioma
dc.creatorLeite, Aline do Amaral-
dc.creatorMelo, Leônidas Carrijo Azevedo-
dc.creatorHurtarte, Luis Carlos Colocho-
dc.creatorZuin, Lucia-
dc.creatorPiccolla, Cristiano Dela-
dc.creatorWerder, Don-
dc.creatorShabtai, Itamar-
dc.creatorLehmann, Johannes-
dc.date.accessioned2023-11-21T18:27:29Z-
dc.date.available2023-11-21T18:27:29Z-
dc.date.issued2023-08-
dc.identifier.citationLEITE, A. do A. et al. Magnesium-enriched poultry manure enhances phosphorus bioavailability in biochars. Chemosphere, [S.l.], v. 331, Aug. 2023.pt_BR
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0045653523010263pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/58573-
dc.description.abstractPyrolysis 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.pt_BR
dc.languageen_USpt_BR
dc.publisherElsevierpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceChemospherept_BR
dc.subjectLinear combinationpt_BR
dc.subjectP speciationpt_BR
dc.subjectP extractionspt_BR
dc.subjectNutrient recyclingpt_BR
dc.titleMagnesium-enriched poultry manure enhances phosphorus bioavailability in biocharspt_BR
dc.typeArtigopt_BR
Aparece nas coleções:DCS - Artigos publicados em periódicos

Arquivos associados a este item:
Não existem arquivos associados a este item.


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.