Course Outline

Part 1: Waste Valorization through Methanization

• I. Waste Valorization through Methanization:

  • I.1. Waste Management

  • I.2. Biological Waste Treatment (Generalities)

    • I.2.1. Main types of waste concerned

    • I.2.2. Energy metabolism and its implications (Theoretical aspects, Aerobic respiration, Anaerobic respiration and fermentations, Practical implications)

• II. Anaerobic Digestion of Waste: Biomethanization:

  • II.1. Definition

  • II.2. Metabolic steps of methanization (Hydrolysis & Acidogenesis, Acetogenesis, Methanogenesis)

  • II.3. Key parameters of methanic fermentation:

    • Temperature

    • Redox potential

    • pH and buffer equilibrium

    • Hydrogen partial pressure

    • Nutrient requirements & C/N ratio

    • Moisture content & Pre-treatments

    • Methanization inhibitors

• III. Biogas:

  • III.1. Definition & Characterization (Chemical composition, Properties, Energy valorization)

  • III.2. Methanization Bioreactors:

    • Classification by feeding mode, substrate type, and number of stages

  • III.3. Gas Purification Systems ($\text{CO}_2$ and $\text{H}_2\text{S}$ removal)

  • III.4. Advantages and disadvantages of anaerobic digestion

• IV. The Rumen Ecosystem

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