Hydrothermal pretreatment of several lignocellulosic mixtures containing wheat straw and two hardwood residues available in Southern Europe.
This work studied the processing of biomass mixtures containing three lignocellulosic materials largely available in Southern Europe, eucalyptus residues (ER), wheat straw (WS) and olive tree pruning (OP). The mixtures were chemically characterized, and their pretreatment, by autohydrolysis, evaluated within a severity factor (logR0) ranging from 1.73 up to 4.24. A simple modeling strategy was used to optimize the autohydrolysis conditions based on the chemical characterization of the liquid fraction. The solid fraction was characterized to quantify the polysaccharide and lignin content. The pretreatment conditions for maximal saccharides recovery in the liquid fraction were at a severity range (logR0) of 3.65-3.72, independently of the mixture tested, which suggests that autohydrolysis can effectively process mixtures of lignocellulosic materials for further biochemical conversion processes.
Laboratório Nacional de Energia e Geologia, I.P. (LNEG), Unidade de Bioenergia, Estrada do Paço do Lumiar 22, 1649-038 Lisboa, Portugal; Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Linking Landscape, Environment, Agriculture and Food (LEAF), Tapada da Ajuda, 1349-017 Lisboa, Portugal.
Talita
T
Silva-Fernandes
Laboratório Nacional de Energia e Geologia, I.P. (LNEG), Unidade de Bioenergia, Estrada do Paço do Lumiar 22, 1649-038 Lisboa, Portugal.
Luís Chorão
LC
Duarte
Laboratório Nacional de Energia e Geologia, I.P. (LNEG), Unidade de Bioenergia, Estrada do Paço do Lumiar 22, 1649-038 Lisboa, Portugal.
Florbela
F
Carvalheiro
Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Linking Landscape, Environment, Agriculture and Food (LEAF), Tapada da Ajuda, 1349-017 Lisboa, Portugal.
Maria Conceição
MC
Loureiro-Dias
Laboratório Nacional de Energia e Geologia, I.P. (LNEG), Unidade de Bioenergia, Estrada do Paço do Lumiar 22, 1649-038 Lisboa, Portugal. Electronic address: cesar.fonseca@lneg.pt.
César
C
Fonseca
Laboratório Nacional de Energia e Geologia, I.P. (LNEG), Unidade de Bioenergia, Estrada do Paço do Lumiar 22, 1649-038 Lisboa, Portugal.
Francisco
F
Gírio
D001709:Biotechnology / Q000379:methods*; D005060:Europe; D005663:Furans / Q000032:analysis; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry*; D008962:Models, Theoretical; D009005:Monosaccharides / Q000032:analysis; D031658:Olea / Q000737:chemistry; D009844:Oligosaccharides / Q000032:analysis; D010636:Phenols / Q000032:analysis; D013696:Temperature; D014908:Triticum / Q000737:chemistry*; D014866:Waste Products; D014867:Water / Q000494:pharmacology*; D014934:Wood / Q000737:chemistry*
D005663:Furans; D009005:Monosaccharides; D009844:Oligosaccharides; D010636:Phenols; D014866:Waste Products; D014867:Water; C036909:lignocellulose; D008031:Lignin
Biomass pretreatment; Biorefinery; Feedstock mixtures; Lignocellulose; Sugar recovery