Method 6 ABP processing involves specific procedures for treating animal by-products, particularly those from aquatic animals, to ensure they are safely managed and utilised according to EU regulations.

Method 6 ABP processing, as defined by EU regulations, is a vital method for managing Category 3 animal by-products originating from aquatic animals or aquatic invertebrates. This method includes:

  • Particle Size Reduction: The animal by-products must be reduced to a particle size no greater than:

    • 30 mm if heat treatment is applied according to point 2(b)

    • 50 mm if heat treatment is applied according to point 2(a)

    • After reduction, the by-products must be mixed with formic acid to reduce and maintain the pH to 4.0 or lower. The mixture must be stored for at least 24 hours pending further treatment​​.

  • Heat Treatment: The mixture must then be heated to:

    • A core temperature of at least 70°C for at least 60 minutes.

    • A core temperature of at least 90°C for at least 60 minutes; or

    • When using a continuous flow system, the progression of the product through the heat converter must be controlled by mechanical commands limiting its displacement, ensuring a sufficient cycle of time and temperature.

  • Batch or Continuous Systems: The processing may be carried out in batch or continuous systems, allowing flexibility in operations​​.

  • Regulatory Compliance: Adherence to these processing standards ensures that the treated ABP is safe for its intended use, whether for energy production, fertilisers, or other technical applications.

Method 6 ensures the safe and effective treatment of ABP, minimising risks to public and animal health and adhering to stringent EU regulations.