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Table 2 Comparison between microwave-assisted batch and fast heating rate flow-through reaction systems: effect of operative temperature on the product yields (% w/w)

From: Autohydrolysis pretreatment of Arundo donax: a comparison between microwave-assisted batch and fast heating rate flow-through reaction systems

Reaction conditions Xtot (%) Monomer yield Oligomer/polymer yield Degradation product yield
Exp. T (°C) t (min) τ (min) Q (mL/min) Mb/Vw (g/L) Log (KSFS) Log (KSFL) YGlu (%) YXyl (%) YArab (%) YASL (%) Yolig(Cell) (%) Yolig(Hemi) (%) YAcet (%) YLev (%) YHMF (%) YF (%) YFA (%)
1FT 180 20 4.3 7.0 50 3.66 2.99 28.5 0.2 0.6 0.6 7.7 1.3 15.2 0.4 0.0 0.0 0.0 0.1
2FT 200 20 4.3 7.0 50 4.25 3.58 40.3 0.4 4.6 0.9 9.7 1.7 24.0 0.6 0.0 0.0 0.2 0.0
1MW 180 20 50 3.66 3.66 29.0 0.7 2.2 1.7 4.4 4.8 9.8 0.0 0.4 0.0 0.0 0.0
2MW 200 20 50 4.25 4.25 34.0 1.8 9.8 3.2 4.5 2.3 4.5 0.5 1.4 0.0 0.0 0.0
  1. τ average residence time, Q water flow rate, M b /V w biomass to water ratio (w/vol), KSF S kinetic severity factor for the solid phase, KSF L kinetic severity factor for the liquid phase, X tot total solubilized fraction of the initial biomass calculated by Eq. 8, Glu glucose, Xyl xylose, Arab arabinose, ASL acid-soluble lignin, Cell cellulose, Hemi hemicellulose, Acet acetic acid, Lev levulinic acid, HMF hydroxymethilfurfural, F furfural, FA formic acid