• Biological biogas upgrading process was evaluated in up-flow reactors. Different types of gas distributers were investigated for upgrading. Biogas with more than 98% CH 4 produced ex-situ process. H 2 gas–liquid mass transfer rate can be improved using porous SiC distributor. Four different ceramic distributors (Al O 3 1.2 μm and 0.5, 7 14 μm) to increase biomethane formation during Each type...

The lack of proper sludge withdrawal routines has been one the main causes solids washout and consequent deterioration effluent quality from up-flow anaerobic blanket (UASB) reactors treating sewage in developing countries. establishment an adequate routine depends on knowledge mass inside reactor, but for this, it is necessary to continuously monitor solid’s profile along height digestion comp...