Figure 2From: Combined sodium hydroxide and ammonium hydroxide pretreatment of post-biogas digestion dairy manure fiber for cost effective cellulosic bioethanol productionPlot of percent delignification of manure fibers vs modified severity parameter (log M 0 ) for alkaline pretreatment treated at. (A) 100°C using combined NH3 and NaOH, (B) 121°C/15 psi using combined NH3 and NaOH, (C) 121°C/15 psi using NaOH, and (D) 121°C/15 psi using NH3.Back to article page