Structural and elemental analysis of biochars in the search of a synthetic path to mimetize anthropic Amazon soils

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dc.creatorSugandha Dogra Pandey
dc.creatorFernanda Gomes de Mendonça
dc.creatorMárcio Neves Rodrigues
dc.creatorBeatriz Palhares Zschaber Faria
dc.creatorJoão Luiz Elias Campos
dc.creatorIgor Forattini Prates Carvalhais Noronha
dc.creatorSara Silveira Vieira
dc.creatorNadiene Aparecida do Vale Santos
dc.creatorLuiz Arnaldo Fernandes
dc.creatorRegynaldo Arruda Sampaio
dc.creatorFernando Colen
dc.creatorZuy Maria Magriotis
dc.creatorAdo Jorio
dc.date.accessioned2023-04-11T12:49:34Z
dc.date.accessioned2025-09-09T00:36:35Z
dc.date.available2023-04-11T12:49:34Z
dc.date.issued2021-02
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1016/j.jenvman.2020.111685
dc.identifier.issn1095-8630
dc.identifier.urihttps://hdl.handle.net/1843/51792
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Environmental Management
dc.rightsAcesso Restrito
dc.subjectCarvão vegetal
dc.subjectTerra preta
dc.subjectRaman, Espectroscopia de
dc.subjectCarbono
dc.subject.otherTerra preta de índio
dc.subject.otherRaman spectroscopy
dc.subject.otherCarbon
dc.subject.otherChemical activation
dc.titleStructural and elemental analysis of biochars in the search of a synthetic path to mimetize anthropic Amazon soils
dc.typeArtigo de periódico
local.citation.spage111685
local.citation.volume279
local.description.resumoIn this work, chemical and structural properties of various biochars were analyzed and compared with those from a highly stable anthropic soil, Terra Preta de Índio (TPI). TPI is believed to be responsible for the fertility of Amazonian soils and their stability; therefore, the production of a synthetic TPI would be of great interest for agricultural applications. Biochar produced from different raw biomasses were comprehensively characterized and, based on the obtained results, a preliminary study was performed testing three different routes of chemical activation using nitric acid, phosphoric acid, and potassium hydroxide as activating agents. After chemical activations, metal contents in the biochars decreased, as expected, and high degrees of carbonization were observed. In the case of the activation performed with HNO3, intense signals related to carboxylic groups in TG-MS analysis and in potentiometric titrations point out to a highly oxygenated biochar. Structural analysis showed that activations generated point defects in sp2-carbon structures of biochar, with the material obtained after KOH activation showing a high surface area (569 m2 g−1), an important feature for the use as soil amendment.
local.publisher.countryBrasil
local.publisher.departmentICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0301479720316108

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