C. R. Vitasari et al [6] conducted water extraction of
fast-pyrolysis bio-oil with stirring speeds up to 600 rpm and water:bio-oil ratios of 0.3
to 0.9. However, the various parameters in the water extraction process have yet been
studied. This study, Therefore, this study aims to investigate the effects of various
parameters for optimization of the water extraction process for the bio-oil. The
properties of pyrolytic lignin derived from different conditions were characterized and
compared to the starting bio-oil.