Journal
WATER SCIENCE AND TECHNOLOGY
Volume 44, Issue 10, Pages 221-229Publisher
I W A PUBLISHING
DOI: 10.2166/wst.2001.0626
Keywords
activated sludge; carbohydrates; C/N ratio; extracellular polymers; proteins
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Effect of carbon to nitrogen ratio (C/N) on the sludge extracellular polymer composition is studied in synthetically fed semi-continuous reactors with 8 days of sludge age. Results show that C/N ratio influences the relative distribution of polymer carbohydrate and protein. At low C/N ratio of 5, polymer extracts have high protein and low carbohydrate content. As the C/N ratio is increased to 17.5 and then to 40, carbohydrate concentration increases sharply and protein concentration decreases.
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