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Table 5 The three main thermo-chemical process of biomass

From: Microwave pyrolysis of lignocellulosic biomass––a contribution to power Africa

Biomass conversion process Air supply Temperature range (°C) Products
Gasification Less than stoichiometric oxygen required 800–1000 Syngas; char.
(The syngas produced through gasification is predominately carbon monoxide, hydrogen, methane, and carbon dioxide).
Combustion In excess 800–1200 Flue gas and ash.
(Emissions of dioxins, furans).
Pyrolysis Absent of oxygen 350–600 Bio-oil, syngas, char.
(The gases and the bio-oil are from the volatile fraction of biomass, while the char is mostly the fixed carbon component).