Published October 20, 2014
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Modified Anaerobic Digestion Model No.1 for dry and semi-dry anaerobic digestion of solid organic waste

Creators

  • 1. University of Cassino
  • 2. University of Paris
  • 3. University of Naples Federico II
  • 4. UNESCO-IHE Institute for Water Education

Description

The role of total solids (TS) content in anaerobic digestion of selected complex organic matter, e.g. rice straw and food waste, was investigated. A range of TS from wet (4.5%) to dry (23%) was evaluated. A modified version of the Anaerobic Digestion Model No.1 for a complex organic substrate is proposed to take into account the effect of the TS content on anaerobic digestion. A linear function that correlates the kinetic constants of three specific processes (i.e. disintegration, acetate and propionate up-take) was included in the model. Results of biomethanation and volatile fatty acids production tests were used to calibrate the proposed model. Model simulations showed a good agreement between numerical and observed data.
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