A process for producing lignin and volatile compounds from hydrolysis liquor

Table 4 Functional group associated with precipitates made from the acidification of hydrolysis and soda liquors generated after 45 min of the hydrolysis treatment

Temperature °C	Precipitates of hydrolysis liquor (mmol/g)			Precipitates of soda liquor (mmol/g)
Temperature °C	170	180	190	170	180	190
Aliphatic OH	2.04	1.54	0.75	1.05	1.14	0.53
C₅ substituted	0.33	0.23	0.07	0.35	0.19	0.24
Guaiacyl OH	1.42	1.61	0.94	1.22	1.14	0.86
p-Hydroxy phenyl	0.08	0.06	0	0.1	0.03	0.02
Carboxylic	0.14	0.14	0.06	0.71	0.67	0.53
Total	4.01	3.58	1.81	3.43	3.17	2.18

ISSN: 2731-3654