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Table 1 Components ratio in raw and each treated PS

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 22.4
Inorganic materials 41.9 28.7 17.4
Others 25.5 16.3 8.88