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

Authors

  • 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

Keywords:

anthropogenic dark earth of Amazonia, biochar, charcoal, gas chromatography, mass spectrometry, nuclear magnetic resonance

Abstract

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.

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Published

2012-06-15

How to Cite

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 Agropecuaria Brasileira, 47(5), 687–692. https://doi.org/10.1590/S1678-3921.pab2012.v47.10003

Issue

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

Section

SOIL SCIENCE