Wheat straw distribution

The experimental data presented herein are the result of exploratory research aimed at bracketing the necessary moisture and inoculum loads for effective pilot-scale distributed upgrading of wheat straw stems for production of straw-thermoplastic composites (4,15). An exploratory approach was chosen for these tests because full-scale outdoor systems having few environmental controls would be difficult if not impossible to closely control. Both temperature and moisture levels vary owing to variations in heat,... 

The distribution of contaminants over volatiles and charcoal in the pyrolysis process the major contaminants present in the feedstock for pyrolysis process are chlorine, nitrogen and alkalis. Jensen et.al. (9) owed that during pyrolysis of wheat straw considerable amounts of chlorine are released during the pyrolysis between 300-400 C. Potassium was only released at temperatures above 600-700 C. 

Table 3. Kinetics derived for individual heating rates as well as simultaneously for all three heating rates for the pyrolysis of wheat straw using the distributed activation energy model with 0.055. 

Fig. 5 Pyrolysis of wheat straw at 5, 10 and 40°C/min. Kinetics fitted to the individual curves (A) and simultaneously to three curves (B) by the distributed activation energy model.

Fig. 6 The experimental data for the pyrolysis of wheat straw at 10°C/min to 600°C ( 1) and to 300 C for 60 min before 600°C ( 2). Model data using the distributed activation energy fitted to 1 and used to model 2.

Ben-Ghedalia, B., Yosef, E. Effect of isolation procedure on molecular weight distribution of wheat straw lignins. J. Agric. Food Chem. 42, 649-652 (1994)... 

Pakkanen H, Alen R. Molecular mass distribution of lignin from the alkaline pulping of hardwood, softwood, and wheat straw.J Wood Chem Technol 2012 32(4) 279—93. 

Figure 3. Effect of steaming temperature on the chain length distribution of xylo-oligomers in the aqueous extract of steamed birchwood and wheat straw. Steaming time 10 min. Molar mass by SEC in DMS0 H20 (90 10) 0,05 MLiBr...

Donaldson L, Hague J, SneU R (2001) Lignin distribution in coppice poplar, linseed and wheat straw. Holzforschung 55 379-385... 

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