Before the bio-oil is used as fuel, the characterization is needed to determine its quality.
Characterization of bio-oil obtained from pyrolysis at optimum condition (temperature Ideally, the smaller the solid content, the quality of bio-oil is better because high levels of
solids that can cause blockage and erosion in the pipe or pump system.
High levels of solids disrupt the stability of the viscosity of bio-oil after a certain period.
Ash content in bio-oil pyrolysis associated with solid content as it contains ash solids pyrolysis.
By eliminating solids in the bio-oil, the ash content of the bio-oil is also reduced.
High viscosity will cause poor atomization processes and incomplete combustion.