From: Lactic acid production from paper sludge by SSF with thermotolerant Rhizopus sp.
Content (%)
Raw
HCl
NaOH–HCl
Cellulose
22.4
36.3
51.3
Other sugars
10.1
18.6
Inorganic materials
41.9
28.7
17.4
Others
25.5
16.3
8.88