Effect of carbon to nitrogen ratio on the composition of microbial extracellular polymers in activated sludge


Durmaz B., Sanin F.

WATER SCIENCE AND TECHNOLOGY, vol.44, pp.221-229, 2001 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 44
  • Publication Date: 2001
  • Title of Journal : WATER SCIENCE AND TECHNOLOGY
  • Page Numbers: pp.221-229

Abstract

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.