During sewage treatment, biogases are produced which include

During sewage treatment, biogases are poroduced which include?

During sewage treatment biogas produced includes:

During sewage treatment, methanogens are used in

During sewage treatment, methanogens are used in

In an aerobic sludge digestion during secondary treatment of sewage, biogas is produced which is a mixture of:

In anaerobic sludge digestion, during secondary treatment of sewage, biogas is produced which is a mixture of :