Figure 5From: Towards a metagenomic understanding on enhanced biomethane production from waste activated sludge after pH 10 pretreatmentRelative abundance of functional reads affiliated to metabolisms associated to higher methane production using KO database. Expression of these faculties in the un-pretreated sludge bioreactor gradually elevated over time (compare UP30 and UP40), and were highest in pretreated-sludge bioreactor (P30).Back to article page