Data/hora: 12/06/2024 08:34:42

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 16/04/2013
Data da última atualização: | 06/08/2013
Autoria: | BERGIER, I.; FREITAS, I. V.; GUIOTOKU, M.
Afiliação: | IVAN BERGIER TAVARES DE LIMA, CPAP; ISABEL VINHAL FREITAS, UNIVERSIDADE FEDERAL DE UBERLÂNDIA; MARCELA GUIOTOKU, UNIVERSIDADE FEDERAL DE SANTA CATARINA.
Título: | Low vacuum thermochemical conversion of anaerobically digested swine solids.
Ano de publicação: | 2013
Fonte/Imprenta: | Chemosphere, v. 92, n. 6, p. 714-720, 2013.
Páginas: | 7 p.
ISSN: | 0045-6535
Idioma: | Inglês

Conteúdo:

This work provides data on the production of biochar from the pyrolysis of the solid phase of swine effluents following anaerobic biodigestion. The study involved the low vacuum thermochemical conversion by environmental scanning electron microscope (ESEM) in a thermoregulated hot-stage tungsten SEM.
The feedstock was characterized by FTIR, ESEM and energy dispersive X-ray analysis (EDS). The charred feedstock at peak temperatures of 300 C, 400 C, 500 C, 600 C, 700 C, and 1000 C were assessed by SEM and EDS. For each pyrolysis experiment, the exhaust gases were monitored by photoacoustic spectroscopy. SEM/EDS indicated that for increasing peak temperature in low vacuum pyrolysis, the mass losses are greater and the proportion of mineral particles such as P, Ca and Mg in the biochar. Photoacoustic spectroscopy showed that low vacuum pyrolysis is responsible for emissions of toxic gases NH3 and SO2 and radiative trace gases, especially N2O above 600 C.

Palavras-Chave: | FTIR; Swine manure biochar; X-ray analysis.
Thesaurus Nal: | photoacoustic spectroscopy; scanning electron microscopy.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (58703-1) - UPC - SP - PP - SP17735 -  - 17735 - DIS