Fig. 4.
Weight loss (a) and weight loss rate (b) of unpurified soda liquor lignin of soda liquors collected at different hydrolysis temperatures (170, 180, and 190 °C) but at 45 min
Weight loss (a) and weight loss rate (b) of unpurified soda liquor lignin of soda liquors collected at different hydrolysis temperatures (170, 180, and 190 °C) but at 45 min