Moisture sorption of biochar from banana pseudostem fibers according to the pyrolysis temperature

Autor: Flaviana Andrade Faria, Marisa Veiga Capela, Diógenes dos Santos Dias, Jorge Manuel Vieira Capela, Clovis Augusto Ribeiro, Marisa Spirandeli Crespi, Lucas Mattiolli
Přispěvatelé: Universidade Estadual Paulista (Unesp)
Rok vydání: 2019
Předmět:
Zdroj: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ISSN: 1588-2926
1388-6150
DOI: 10.1007/s10973-019-08141-8
Popis: Made available in DSpace on 2019-10-06T17:05:02Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-01-01 Biomass has been widely used mainly for power generation or fertilizer and can be used in natura, torrefied or pyrolyzed form. For application in the generation of energy or fertilizer, it is necessary the knowledge of some properties such as the sorption of moisture. The main aim was to evaluate the sorption of moisture by the fibers from banana pseudostem in natura (wet basis), dry (100 °C), torrefied (200–300 °C) and pyrolyzed (400–600 °C). For the evaluation of the sorption of moisture was used climatized chamber at temperatures of 40 °C and 75% relative humidity (climatic zone IV). The results indicate that under the conditions used, when higher pyrolysis temperature is applied to the biomass, higher sorption of moisture occurs, with values close to 50% (w/w) for banana pseudostem fibers pyrolyzed at 600 °C. The significant increase in moisture was attributed initially by the presence of a high concentration of potassium oxalate that was later converted to carbonate in biochar obtained above 400 °C. In order to characterize the biomasses, thermogravimetry, differential scanning calorimetry, Fourier transform infrared spectroscopy and energy-dispersive spectroscopy were used. The exponential model was used to evaluate the kinetics of moisture sorption. São Paulo State University – IQ/UNESP, Professor Francisco Degni Street 55 São Paulo State University – IQ/UNESP, Professor Francisco Degni Street 55
Databáze: OpenAIRE
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