highly significantP < 0.01
The maximal methane yield was found from 1.5% NaOH-treated CS (178.6 mL·gVS −1 ), which showed a highly significant (P < 0.01) reduction with increase of concentration of NaOH (Fig. 1f ).
The maximal methane yield was found from 1.5% NaOH-treated CS (178.6 mL·gVS −1 ), which showed a highly significant (P < 0.01) reduction with increase of concentration of NaOH (Fig. 1f ).