Construction and demolition lignocellulosic wastes to bioethanol
Artikel i vetenskaplig tidskrift, 2011

This work deals with conversion of four construction and demolition (C&D) lignocellulosic wastes including OSB, chipboard, plywood, and wallpaper to ethanol by separate enzymatic hydrolysis and fermentation (SHF). Similar to other lignocelluloses, the wastes were resistant to the enzymatic hydrolysis, in which only up to 7% of their cellulose was hydrolyzed. Therefore, the lignocellulosic wastes were treated with phosphoric acid, sodium hydroxide, or N-methylmorpholine-N-oxide (NMMO), which resulted in improving the subsequent enzymatic hydrolysis to 38.2-94.6% of the theoretical yield. The best performance was obtained after pretreatment by concentrated phosphoric acid, followed by NMMO. The pretreated and hydrolyzed C&D wastes were then successfully fermented by baker's yeast to ethanol with 70.5-84.2% of the theoretical yields. The results indicate the possibility of producing 160 ml ethanol from each kg of the C&D wastes at the best conditions.

ethanol-production

Phosphoric acid

Ethanol

saccharification

Pretreatment

spruce

alkaline pretreatment

biogas production

Wallpaper

cellulose

Construction engineered wood waste

NMMO

enhanced enzymatic-hydrolysis

Författare

V. Jafari

Hogskolan i Boras

S. R. Labafzadeh

Hogskolan i Boras

Azam Jeihanipour

Chalmers, Kemi- och bioteknik, Kemisk reaktionsteknik

K. Karimi

Isfahan University of Technology

Hogskolan i Boras

Mohammad Taherzadeh Esfahani

Hogskolan i Boras

Renewable Energy

0960-1481 (ISSN)

Vol. 36 2771-2775

Ämneskategorier

Industriell bioteknik

DOI

10.1016/j.renene.2011.04.028