Effect of pH and VFA on Hydrolysis of Organic Solid Waste
Publication: Journal of Environmental Engineering
Volume 126, Issue 12
Abstract
The anaerobic hydrolysis rate of organic solid waste was studied at fixed volatile fatty acid (VFA) concentrations ranging from 3 to 30 g COD/L and fixed pH values between 5 and 7. For separate control of both VFA and pH, a special completely mixed reactor was designed. In this way, it was possible to distinguish between the inhibitory effects of pH, total VFA, and undissociated VFA on anaerobic hydrolysis. It was shown that hydrolysis of the organic solid waste followed first-order kinetics. Using a statistical analysis, it was found that the hydrolysis rate constant was pH dependent but was not related to the total VFA and undissociated VFA concentrations.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 126 • Issue 12 • December 2000
Pages: 1076 - 1081
History
Received: Apr 9, 1999
Published online: Dec 1, 2000
Published in print: Dec 2000
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