Physicochemical properties of bio-oil and biochar produced by fast pyrolysis of stored single-pass corn stover and cobs.
Short harvest window of corn (Zea mays) stover necessitates its storage before utilization; however, there is not enough work towards exploring the fast pyrolysis behavior of stored biomass. This study investigated the yields and the physicochemical properties (proximate and ultimate analyses, higher heating values and acidity) of the fast pyrolysis products obtained from single-pass stover and cobs stored either inside a metal building or anaerobically within plastic wraps. Biomass samples were pyrolyzed in a 183 cm long and 2.1cm inner diameter free-fall fast pyrolysis reactor. Yields of bio-oil, biochar and non-condensable gases from different biomass samples were in the ranges of 45-55, 25-37 and 11-17 wt.%, respectively, with the highest bio-oil yield from the ensiled single-pass stover. Bio-oils generated from ensiled single-pass cobs and ensiled single-pass stover were, respectively, the most and the least acidic with the modified acid numbers of 95.0 and 65.2 mg g(-1), respectively.
Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50011, USA. ajay@iastate.edu
Ajay
A
Shah
Matthew J
MJ
Darr
Dustin
D
Dalluge
Dorde
D
Medic
Keith
K
Webster
Robert C
RC
Brown
D006361:Heating / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D017745:Incineration / Q000379:methods*; D035261:Plant Components, Aerial / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry*; D013696:Temperature; D003313:Zea mays / Q000737:chemistry*
D010938:Plant Oils