A critical review of ammonia recovery from anaerobic digestate of organic wastes via stripping

Anaerobic digestion is a well-established technology that valorises organic wastes to produce renewable energy as biogas. The ammonia released during this process can be inhibitory if it exceeds threshold concentration. Additionally, harmful environmental pollutant and also source of energy, thus establishing need for the recovery ammonia. Gas-liquid stripping one such widely researched recover from wastewater. However, there have not been any reviews focusing solely on application anaerobic digestate wastes. This study current state research in field, factors affecting recovery, column designs linking an digester column. An overview work done modelling included. review offers direction further field; i.e., experimental studies i) effect composition ii) gas removal.