In situ biogas stripping of ammonia from a digester using a gas mixing system.Previous studies have suggested the use of digester biogas mixing systems for in situ ammonia removal from anaerobic digestates. 
gas mixing system
Simulation based on batch column stripping experiments at 55°C at gas violent flow rates of 0.032 m3 m-2 min-1 indicated that ammonia concentrations could be reduced below inhibitory values in thermophilic food waste digestion for organic loading rates of up to 6 kg VS m-3 day-1. 
batch column stripping experiments