Data/hora: 08/06/2024 21:36:47

Biblioteca(s): | Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia; Embrapa Tabuleiros Costeiros.
Data corrente: | 11/08/2021
Data da última atualização: | 26/11/2021
Autoria: | MARAFON, A. C.; AMARAL, A. F. C.; MACHADO, J. C.; CARNEIRO, J. da C.; BIERHALS, A. N.; GUIMARÃES, V. dos S.
Afiliação: | ANDERSON CARLOS MARAFON, CPATC; ANDRE FELIPE CAMARA AMARAL, CENARGEN; JUAREZ CAMPOLINA MACHADO, CNPGL; JAILTON DA COSTA CARNEIRO, CNPGL; ADRIANA NEUTZLING BIERHALS, Universidade Federal de Alagoas; VICTOR DOS SANTOS GUIMARÃES, Universidade Federal de Alagoas.
Título: | Chemical composition and calorific value of elephant grass varieties and other feedstocks intended for direct combustion.
Ano de publicação: | 2021
Fonte/Imprenta: | Grassland Science, v. 67, p. 241-249, 2021.
DOI: | https://doi.org/10.1111/grs.12311
Idioma: | Inglês
Conteúdo: | Perennial grasses display several positive attributes as suitable energy crops for use as a solid fuel for direct combustion, such as high annual production of dry matter per unit area, perennity and high harvest flexibility. This study aimed to characterize the chemical composition and calorific value of 18 elephant grass (EG) varieties (Pennisetum purpureum Schum.) and 10 other potential bioenergy feedstocks intended for direct combustion. Samples were obtained from 6-month-old EG and sorghum and 3-year-old eucalyptus, Mimosa caesalpiniaefolia, and bamboo plants. Sugarcane bagasse and straw, rice husk, corn stover, coconut husk, and fiber samples were also evaluated. The elemental composition, lower heating value (LHV), and cellulose (CEL), hemicellulose (HCEL), lignin (LIG) and ash contents (% dry matter) were analyzed. The results indicated that the EG genotypes showed significant differences when compared with other evaluated biomasses, but showed no differences among themselves. The EG varieties showed a mean LHV (16.7 MJ/kg) superior to that of rice husk, sugarcane bagasse, and sorghum and similar to that of sugarcane straw, coconut fiber, and corn stover. The EG varieties showed a mean ash content (4.74%) inferior to that of rice husk, sugarcane bagasse, coconut fiber, and sorghum; a mean CEL content (36.0%) similar to that of sugarcane straw, coconut fiber, corn stover, sorghum, and Mimosa caesalpinifolia; HCEL; a mean HCEL content (30.3%) superior to that of rice husk, bamboo, eucalyptus, M. caesalpinifolia, coconut husk, and fiber; and a mean LIG content (8.80%) superior to that of corn stover and similar to that of sorghum, sugarcane bagasse, and straw biomass. The significant capacity of EG to accumulate dry matter was associated with the biomass quality attributes (LHV and CEL, HCEL, LIG, and ash contents), thereby making it an excellent alternative to lignocellulosic feedstock for direct combustion.
Palavras-Chave: | Biomass attributes; Thermal energy.
Thesagro: | Bioenergia; Capim Elefante; Combustão; Composição Química; Energia Térmica; Pennisetum Purpureum.
Thesaurus Nal: | Bioenergy.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Tabuleiros Costeiros (CPATC)

Exemplares:

CNPGL - (25175-1) - UPC - AP - DD -  -  -  - DIS
CENARGEN - (38587-1) - UPC - AP - DD -  -  -  - DIS
CPATC - (25907-1) - UPC - AP - DD -  -  -  - DIS