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Continue to ChatTwo-Phase Thermophilic Acidification and Mesophilic Methanogenesis Anaerobic Digestion of Waste-Activated Sludge - https://avesis.metu.edu.tr/yayin/4046295b-3233-417e-9602-bac8983fb5cd/two-phase-thermophilic-acidification-and-mesophilic-methanogenesis-anaerobic-digestion-of-waste-activated-sludge