Integrated Intensification and Nutrient Recovery Strategies in Two-Stage Anaerobic Co-Digestion of Sewage Sludge and the Organic Fraction of Municipal Solid Waste: State of the Art, Engineering Challenges of Scale-Up, and Perspectives
Two-stage anaerobic digestion (TSAD) is an alternative to single-stage anaerobic digestion, separating hydrolytic–acidogenic and methanogenic phases to improve stability, organic matter degradation, and methane production. This review examines TSAD for co-digestion of sewage sludge (SS) and the organic fraction of muni...