From: Microwave pyrolysis of lignocellulosic biomass––a contribution to power Africa
Properties | Oil characteristics | Reasons |
---|---|---|
Appearance | Dark red-brown to dark green | Micro-carbon and chemical composition in oil |
Odor | Distinctive odor–an acid smoky smell | Lower molecular weight aldehydes and acids |
Density | Very high compared to fossil fuel Pyrolysis bio-oil; 1.2 kg/liter Fossil oil; 0.85 kg/liter | High moisture and heavy molecule contamination |
Viscosity | Can vary as low as 25 cSt to as high as 1000 cSt | Wide range of feedstock, water content, and the amount of light ends collected |
Heating value | Significantly lower than fossil oil | High oxygen content |
Aging | Viscosity increase, volatility decrease, phase separation, and deposition of gum occur with time | Complex structure and high pH value |
Miscibility | Miscible with polar solvent but totally immiscible with petroleum fuel | Polar in nature |