Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1171491
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dc.contributor.authorSANTOS, M. G. B. dos
dc.contributor.authorCOSTA, C. R.
dc.contributor.authorMENDES, G. de O.
dc.contributor.authorPAIVA, A. B.
dc.contributor.authorPEIXOTO, L. S.
dc.contributor.authorCOSTA, J. da L.
dc.contributor.authorMARCHI, G.
dc.contributor.authorMARTINS, E. de S.
dc.contributor.authorFIGUEIREDO, C. C. de
dc.date.accessioned2025-01-14T13:46:59Z-
dc.date.available2025-01-14T13:46:59Z-
dc.date.created2025-01-14
dc.date.issued2024
dc.identifier.citationAgriculture, v. 14, 1607, 2024.
dc.identifier.issn2077-0472
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1171491-
dc.descriptionSewage sludge biochar (SSB) exhibits higher phosphorus (P) concentrations than the original sewage sludge (SS) and can be used as a P fertilizer. However, SSB-associated P is strongly retained in chemical compounds, which hinders its release and subsequent plant uptake. The use of organic acids facilitates P solubilization from SSB. Herein, we evaluated the effect of oxalic acid on P release from SSB applied to soil over time. Biochar was produced at 300 ◦C (SSB300) and 500 ◦C (SSB500). P release from SSB increased with an increasing concentration of oxalic acid in the SSB incubation solution and in SSB-treated soil. P speciation in SSB showed that P was predominantly inorganic (Pi), which represented 81% and 92% of the total P in SSB300 and SSB500, respectively. Pi in SSB consisted mainly of non-apatite P, accounting for 91% and 96% of all Pi in SSB300 and SSB500, respectively. Because SSB is predominantly insoluble in water, oxalic acid is crucial for the release of P from SSB. Oxalic acid increased P release from SSB300 and SB500 by 103- and 600-fold, respectively, compared to the control, from which P was extracted with water. Oxalic acid enhancement of Prelease from SSB increases the possibility of using SSB as a sustainable source of P for agriculture.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectBiocarvão
dc.titleOxalic acid boosts phosphorus release from sewage sludge biochar: a key mechanism for biochar-based fertilizers.
dc.typeArtigo de periódico
dc.subject.thesagroAdubo de Esgoto
dc.subject.thesagroFertilizante Fosfatado
dc.subject.thesagroÁcido Oxálico
dc.subject.nalthesaurusPyrolysis
dc.subject.nalthesaurusBiosolids
dc.subject.nalthesaurusPhosphorus
dc.format.extent214 p.
riaa.ainfo.id1171491
riaa.ainfo.lastupdate2025-01-14
dc.contributor.institutionMARCELA GRANATO BARBOSA DOS SANTOS, UNIVERSIDADE DE BRASÍLIA; CAMILA RODRIGUES COSTA, UNIVERSIDADE DE BRASÍLIA; GILBERTO DE OLIVEIRA MENDES, UNIVERSIDADE FEDERAL DE UBERLÂNDIA; ANDRESSA BLASI PAIVA, UNIVERSIDADE DE BRASÍLIA; LUDMILA SOARES PEIXOTO, UNIVERSIDADE DE BRASÍLIA; JÉSSICA DA LUZ COSTA, UNIVERSIDADE DE BRASÍLIA; GIULIANO MARCHI, CPAC; EDER DE SOUZA MARTINS, CPAC; CÍCERO CÉLIO DE FIGUEIREDO, UNIVERSIDADE DE BRASÍLIA.
Appears in Collections:Artigo em periódico indexado (CPAC)

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