physical and chemical characterization of biochars derived from different agricultural residues
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ID: 149140
2014
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Abstract
Biochar is widely recognized as an efficient tool for carbon sequestration
and soil fertility. The understanding of its chemical and physical
properties, which are strongly related to the type of the initial material
used and pyrolysis conditions, is crucial to identify the most suitable
application of biochar in soil. A selection of organic wastes with different
characteristics (e.g., rice husk (RH), rice straw (RS), wood chips of apple
tree (Malus pumila) (AB), and oak tree (Quercus serrata)
(OB)) were pyrolyzed at different temperatures (400, 500, 600, 700, and
800 °C) in order to optimize the physicochemical properties of
biochar as a soil amendment. Low-temperature pyrolysis produced high biochar
yields; in contrast, high-temperature pyrolysis led to biochars with a high C
content, large surface area, and high adsorption characteristics. Biochar
obtained at 600 °C leads to a high recalcitrant character, whereas
that obtained at 400 °C retains volatile and easily labile compounds. The
biochar obtained from rice materials (RH and RS) showed a high yield and
unique chemical properties because of the incorporation of silica elements
into its chemical structure. The biochar obtained from wood materials (AB and
OB) showed high carbon content and a high absorption character.
| Reference Key |
jindo2014biogeosciencesphysical
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|---|---|
| Authors | ;K. Jindo;H. Mizumoto;Y. Sawada;M. A. Sanchez-Monedero;T. Sonoki |
| Journal | tetrahedron letters |
| Year | 2014 |
| DOI |
10.5194/bg-11-6613-2014
|
| URL | |
| Keywords |
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