Data/hora: 03/06/2024 18:16:15

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 06/11/2009
Data da última atualização: | 24/02/2015
Autoria: | GUIOTOKU, M.; RAMBO, C. R.; HANSEL, F. A.; MAGALHAES, W. L. E.; HOTZA, D.
Afiliação: | MARCELA GUIOTOKU, CNPF; CARLOS RENATO RAMBO, UFSC; FABRICIO AUGUSTO HANSEL, CNPF; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; DACHAMIR HOTZA, UFSC.
Título: | Microwave-assisted hydrothermal carbonization of lignocellulosic materials.
Ano de publicação: | 2009
Fonte/Imprenta: | Materials Letters, v. 63, p. 2707-2709, 2009.
Idioma: | Inglês
Conteúdo: | A new microwave-assisted hydrothermal carbonization (MAHC) method is reported in this work. The process uses microwave heating at 200 °C in acidic aqueous media to carbonize pine sawdust (Pinus sp.) and ?-cellulose (Solucell®) at three different reaction times. Elemental analysis showed that the lignocellulosic samples subjected to MAHC yielded carbon-enriched material 50% higher than raw materials. Increase in aromaticity was confirmed by a van Krevelen diagram. SEM micrographs detected no morphological changes in pine sawdust. In contrast, SEM micrographs of carbonized ?-cellulose revealed spherical-shaped particles with diameters ranging from 1 to 2 ?m. These results showed that microwave-assisted hydrothermal carbonization is an innovative approach to obtain carbonized lignocellulosic materials.
Palavras-Chave: | Lignocelulose.
Categoria do assunto: | W Química e Física
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (46098-1) - UPC - AP - DD -  -  -  - DIS