Pyrolysis final temperature effects on biochar stability.

Pyrolysis technology can be used for producing biochar and bio-oil simultaneously, as an effective and sustainable mean to produce renewable bioenergy and a carbon rich soil amendment that can be used for carbon sequestration and agronomic benefits. However, pyrolysis products yields and biochar stability are strongly affected by the feedstock and pyrolysis variables, especially the final temperature. This study was carried out to evaluate the effect of pyrolysis final temperature on biochar stability after thermochemical oxidation. For this experiment, two species of hardwood and two species of softwood with particle size between 0.5 and 2.0 mm were pyrolized at five different final temperatures (350, 400, 450, 500 and 550°C) for 60 min at an muffle furnace with limited supply of O2. Thermochemical oxidation was performed for the solid products (biochar). As pyrolysis final temperature increased, biochar stability increased as well, indicating that these materials would be more resistant to degradation when applied into soil.

Bibliographic Details

Main Authors:	ALHO, C. F. B. V., CROSS, A., SOHI, S. P., MAIA, C. M. B. de F., NOVOTNY, E. H., LELIS, R. C. da C.
Other Authors:	CARLOS FRANCISCO BRAZÃO VIEIRA ALHO, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; ANDREW CROSS, UNIVERSITY OF EDINBURGH; SARAN PAUL SOHI, UNIVERSITY OF EDINBURGH; CLAUDIA MARIA BRANCO DE F MAIA, CNPF; ETELVINO HENRIQUE NOVOTNY, CNPS; ROBERTO CARLOS DA COSTA LELIS, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO.
Format:	Artigo em anais e proceedings biblioteca
Language:	eng
Published:	2012-03-21
Subjects:	Stability, Pyrolysis, Biochar, Oxidation,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/919810
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