Molecular and morphological characterization of hydrochar produced by microwave‑assisted hydrothermal carbonization of cellulose

Autores

  • Marcela Guiotoku Embrapa Florestas
  • Fabricio Augusto Hansel Embrapa Florestas
  • Etelvino Henrique Novotny Embrapa Solos
  • Claudia Maria Branco de Freitas Maia Embrapa Florestas

DOI:

https://doi.org/10.1590/S1678-3921.pab2012.v47.10003

Palavras-chave:

terra preta de índio, “biochar”, carvão vegetal, cromatografia gasosa, espectrometria de massa, ressonância magnética nuclear

Resumo

The objective of this work was to characterize the morphology and molecular composition of the hydrochar produced by microwave‑assisted hydrothermal carbonization of cellulose. The produced hydrochar consists mainly of aggregate microspheres with about 2.0 μm in diameter, with aliphatic and aromatic structures and the presence of carbonyl functional groups. The aromatic groups are formed mainly by benzofuran‑like structures, being chemically different from common cellulose char. Microwave‑assisted hydrothermal carbonization yields a functionalized carbon‑rich material similar to that produced by the conventional hydrothermal process.

Downloads

Publicado

2012-06-15

Como Citar

Guiotoku, M., Hansel, F. A., Novotny, E. H., & Maia, C. M. B. de F. (2012). Molecular and morphological characterization of hydrochar produced by microwave‑assisted hydrothermal carbonization of cellulose. Pesquisa Agropecuária Brasileira, 47(5), 687–692. https://doi.org/10.1590/S1678-3921.pab2012.v47.10003

Edição

v.47, n.5, maio 2012: 3rd International Biochar Conference

Seção

SOLOS