Enhanced anaerobic digestion of waste activated sludge digestion by the addition of zero valent iron

• Published in: Water research (Oxford) Vol. 52; pp. 242 - 250
• Main Authors: Feng, Yinghong, Zhang, Yaobin, Quan, Xie, Chen, Suo
• Format: Journal Article
• Language: English
• Published: England 01.04.2014
• Subjects: Acetates; acidification; Activated sludge; Anaerobic digestion; Anaerobiosis; Biofuels; cellulose; energy; Enzymes; Enzymes - metabolism; Fatty Acids - metabolism; fluorescence in situ hybridization; hydrogen; Hydrogen - metabolism; Hydrolysis; In Situ Hybridization, Fluorescence; Iron; Methane - metabolism; methane production; methanogens; Microbial Consortia; Polysaccharides - metabolism; propionic acid; protein degradation; Proteins; Proteins - metabolism; Sewage - microbiology; Sludge; Sludge digestion; thermodynamics; volatile fatty acids; Waste Disposal, Fluid - methods; Sludge reduction; Waste activated sludge; Methane production; Anaerobic digestion; Zero-valent iron

Anaerobic digestion is promising technology to recover energy from waste activated sludge. However, the sludge digestion is limited by its low efficiency of hydrolysis-acidification. Zero valent iron (ZVI) as a reducing material is expected to enhance anaerobic process including the hydrolysis-acidi...