The role of pH in the organic material solubilization of domestic sludge in anaerobic digestion

• Published in: Water Science & Technology Vol. 48; no. 3; pp. 143 - 150
• Main Authors: YANGIN GOMEC, C, SPEECE, R. E
• Format: Conference Proceeding Journal Article
• Language: English
• Published: London IWA 01.01.2003; IWA Publishing
• Subjects: Acetic acid; Activated sludge; Anaerobic digestion; Applied sciences; Bacteria, Anaerobic - physiology; Biodegradation; Biogas; Biological and medical sciences; Biological treatment of sewage sludges and wastes; Bioreactors; Biotechnology; Chemical oxygen demand; Continuously stirred tank reactors; Environment and pollution; Exact sciences and technology; Fermentation; Fundamental and applied biological sciences. Psychology; Hydrogen-Ion Concentration; Hydrolysis; Industrial applications and implications. Economical aspects; Organic Chemicals - metabolism; Organic materials; Other industrial wastes. Sewage sludge; Oxygen - metabolism; pH control; Pollution; Primary sludge; Reactors; Reduction; Sewage - chemistry; Sewage - microbiology; Sludge; Sludge digestion; Solubility; Solubilization; Temperature; Total suspended solids; Volatilization; Wastes

The effect of pH on anaerobic solubilization of domestic primary sludge and activated sludge was investigated and compared. Anaerobic solubilization was carried out in continuously stirred anaerobic reactors at mesophilic temperature (35 degrees C) and pH was fixed at 6.5 (pH-controlled). Many resea...