Biomass Char Production At Low Severity
Conditions Under CO2 And N2 Environments
Author(s)
G. Pilon & J.-M. Lavoie
Abstract
In a perspective of biomass value addition, biomass char, a thermochemical
product, long time considered as a residue, is now getting attention and may
represent a vector in the sustainability of the whole biomass sector. Some char
types were shown to have great potential as a solid fuel or precursor for further
transformations as well as having attributes for storage and transportation. Other
types showed potential as a soil carbon sequestration technique and soil
amendment enhancing biomass yields. Depending on several factors, but mostly
on biomass and production conditions, biomass char physico-chemical
characteristics may vary tremendously. Therefore, in order to be used in
accordance for specific utilizations, its characteristics must be carefully
understood and controlled. In this study, chars with varying properties were
produced in a custom-made lab-scale fixed bed reactor. Along these experiments,
various biomass chars were produced under CO2 and N2 for temperatures of 300
and 500 °C. Char was produced from switchgrass (Panicum virgatum L.) an
energy crop grown in Canada. It was then characterized for ultimate and
proximate analysis as well as for calorific value. In addition, specific surface
was characterized by Brunauer-Emmett-Teller (BET) technique. Char organic
content composition was verified by Soxhlet extractions using dichloromethane
and extracts were analysed by GC-MS.
Keywords: BET, biochar, biomass, bio-oil, char, CO2, pyrolysis, torrefaction.
Keywords
BET, biochar, biomass, bio-oil, char, CO2, pyrolysis, torrefaction
Related Book
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