Pilot scale sulfur dioxide-ethanol-water fractionation of recycled wood to sugars, bioethanol, lignin and lignosulfonates: Carbohydrate balance.

Two grades of recycled wood (Waste Wood A and Waste Wood B) were fractionated on a pilot scale (800 BD kg) to monomeric sugars, lignin and lignosulfonates using SO-Ethanol-Water (AVAP®) technology, including pretreatment, separation of cellulosic and hemicellulosic streams, and saccharification. Carbohydrate mass balance was obtained through determination of poly-, oligo- and monosaccharides as well as sugar degradation products in process streams. High monosaccharide yields were obtained confirming laboratory scale findings.

Sulfur dioxide-ethanol-water fractionation platform for conversion of recycled wood to sugars, lignin and lignosulfonates.

Recycled wood of two grades (A and B) and spruce were converted on bench (100 o.d. g) and pilot (100 o.