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http://hdl.handle.net/1843/56940| Tipo: | Artigo de Periódico |
| Título: | Potential slow release fertilizers based on K2MgSiO4 obtained from serpentinite |
| Autor(es): | Fabiane Carvalho Ballotin Wedisson Oliveira Santos Edson Marcio Mattiello Ottavio Raul Domenico Riberti Carmignano Ana Paula de Carvalho Teixeira Rochel Montero Lago |
| Resumo: | In this work, a potassium magnesium silicate mineral based on phase K2MgSiO4 was prepared from serpentinite rock and studied as a potential K and Mg slow-release fertilizer. The material was prepared by impregnation of serpentinite/KOH and calcination at 700 °C to produce K2MgSiO4 phase, olivine and forsterite. The release patterns of K and Mg in the stirred-flow trial and leaching through the soil columns showed that K2MgSiO4-based materials released K on lower rates than KCl and MgSO4.7H2O, however, there was no evidence of Mg release. The extraction with 1 mol L-1NH4OAc showed a considerable content of Mg and K for K2MgSiO4-based materials, due to exchange of NH4+ and Mg2+. X-ray diffraction (XRD) analysis of materials impregnated with K and calcined showed peaks relative to K2MgSiO4. After leaching, the peaks intensity diminished, supporting that part of K leached. Therefore, the samples showed great potential as slow-release K-fertilizers when compared with KCl source. |
| Assunto: | Fertilizantes potássicos Potássio Raios X - Difração |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Instituição: | UFMG |
| Departamento: | ICX - DEPARTAMENTO DE QUÍMICA |
| Tipo de Acesso: | Acesso Aberto |
| Identificador DOI: | http://dx.doi.org/10.21577/0103-5053.20190229 |
| URI: | http://hdl.handle.net/1843/56940 |
| Data do documento: | 2019 |
| metadata.dc.url.externa: | https://jbcs.sbq.org.br/default.asp?ed=297 |
| metadata.dc.relation.ispartof: | Journal of the Brazilian Chemical Society |
| Aparece nas coleções: | Artigo de Periódico |
Arquivos associados a este item:
| Arquivo | Descrição | Tamanho | Formato | |
|---|---|---|---|---|
| Potential Slow Release Fertilizers Based on K2MgSiO4 Obtained from Serpentinite.pdf | 818.96 kB | Adobe PDF | Visualizar/Abrir |
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