Figure 1
From: Enhancement of methane production from Cotton Stalk using different pretreatment techniques
Methane yield of CS, (a) H2SO4-treated CS; (b) H3PO4-treated CS; (c) SE-treated CS; (d) Ca(OH)2-treated CS; (e) KOH-treated CS; (f) NaOH-treated CS; (g) AHP-treated CS.
