Continuous alkaline pretreatment of Miscanthus sacchariflorus using a bench-scale single screw reactor.
Bioresour Technol
; 181: 338-44, 2015 Apr.
Article
de En
| MEDLINE
| ID: mdl-25681689
ABSTRACT
Miscanthus sacchariflorus 'Goedae-Uksae 1' (GU) was developed as an energy crop of high productivity in Korea. For the practical use of GU for bioethanol production, a bench-scale continuous pretreatment system was developed. The reactor performed screw extrusion, soaking and thermochemical pretreatment at the following operating conditions 3 mm particle size, 22% moisture content, 140 °C reaction temperature, 8 min residence time, 15 g/min biomass feeding and 120 mL/min NaOH input. As a result of minimizing NaOH concentration and enzyme dosage, 90.8±0.49% glucose yield was obtained from 0.5 M NaOH-pretreated GU containing 3% glucan with 10 FPU cellulase/g cellulose at 50 °C for 72 h. The separate hydrolysis and fermentation of 0.5 M NaOH-pretreated GU containing 10% glucan with 10-30 FPU for 102 h produced 43.0-49.6 g/L bioethanol (theoretical yield, 75.8-87.6%). Thus, this study demonstrated that continuous pretreatment using a single screw reactor is effective for bioethanol production from Miscanthus biomass.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Hydroxyde de sodium
/
Biotechnologie
/
Bioréacteurs
/
Poaceae
Langue:
En
Journal:
Bioresour Technol
Sujet du journal:
ENGENHARIA BIOMEDICA
Année:
2015
Type de document:
Article