Reference : Optimization of formic/acetic acid delignification of Miscanthus ×giganteus for enzymati...
Scientific journals : Article
Life sciences : Agriculture & agronomy
http://hdl.handle.net/2268/97666
Optimization of formic/acetic acid delignification of Miscanthus ×giganteus for enzymatic hydrolysis using response surface methodology
English
Vanderghem, Caroline mailto [Université de Liège - ULg > Chimie et bio-industries > Chimie biologique industrielle >]
Brostaux, Yves mailto [Université de Liège - ULg > Sciences agronomiques > Statistique, Inform. et Mathém. appliquée à la bioingénierie >]
Jacquet, Nicolas mailto [Université de Liège - ULg > Chimie et bio-industries > Chimie biologique industrielle >]
Blecker, Christophe mailto [Université de Liège - ULg > Chimie et bio-industries > Technologie des industries agro-alimentaires >]
Paquot, Michel mailto [Université de Liège - ULg > Chimie et bio-industries > Chimie biologique industrielle >]
2012
Industrial Crops & Products
Elsevier Science
35
280-286
Yes (verified by ORBi)
International
0926-6690
[en] Miscanthus ×giganteus ; Formic/acetic acid pretreatment ; Delignification ; Enzymatic hydrolysis
[en] A Box–Behnken experimental design and response surface methodology were employed to optimize the pretreatment parameters of a formic/acetic acid delignification treatment of Miscanthus ×giganteus for enzymatic hydrolysis. The effects of three independent variables, namely cooking time (1, 2 and 3 h), formic acid/acetic acid/water ratio (20/60/20, 30/50/20 and 40/40/20) and temperature (80, 90 and
107 ◦C) on pulp yield, residual Klason lignin content, concentration of degradation products (furfural and
hydroxymethylfurfural) in the black liquor, and enzymatic digestibility of the pulps were investigated. The major parameter influencing was the temperature for pulp yield, delignification degree, furfural production and enzymatic digestibility. According to the response surface analysis the optimum conditions predicted for a maximum enzymatic digestibility of the glucan (75.3%) would be obtained using a cooking time of 3 h, at 107 ◦C and with a formic acid/acetic acid/water ratio of 40/40/20%. Glucan digestibility was highly dependent on the delignification degree.
Région wallonne : Direction générale des Technologies, de la Recherche et de l'Energie - DGTRE
TECHNOSE project number 716757; LIGNOFUEL project number 716721
http://hdl.handle.net/2268/97666

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