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Training | Temperatures and Biology

14 May, 2024 9:30AM - 1:00PM

Venue: Online

The theme of this course is “Managing summer temperatures and biological health,” in other words the effect of increasing temperatures on biological health and gas production.

In the UK, AD plants are typically built with lots of insulation to keep substrate warm even in cold winter temperatures but this can contribute to increasing tank temperatures and biological risks in the hotter summer months. Operators will gain a better understanding of how temperatures can start to rise, what this means for biological health and gas production and what control measures should be considered to mitigate the risk of serious biological failures. Participants earn a certificate upon completion of the course. The training is delivered by Angela Cronjé, a chemical engineer with 15 years experience in organic waste processing on operational plants.



  • Welcome and introductions
  • Heatwaves and AD
    • How does a digester over-heat?
    • Case studies
    • Importance of data collection and interpretation
  • Rising temperatures and biology
    • What are the ‘normal’ operating temps and why?
    • The effect of increasing temperatures on digester biology
    • The effect on gas production and composition
    • Case studies
  • Digester temperature and ammonia
    • The risks of a high ammonia diet
    • Ammonia chemistry and inhibition
    • The effect of increased temperature on digester ammonia
    • Case Studies
  • Control measures
    • Plant design
    • Tank cooling circuits and external chilling options
    • Diet planning
    • Failed biology recovery
  • Q+A/ open discussion

The agenda includes regular, short comfort breaks.

The Temperatures and Biology course is online and costs £99 + VAT for ADBA members and £149 + VAT for non-members.

Please note, tickets are non-refundable.

The Anaerobic Digestion and Bioresources Association (ADBA) was established in 2009 to represent the UK anaerobic digestion (AD) and bioresources industry and to support the development of a safe, high-performing industry.

Order your tickets through two easy options:

Option 1) Pay by credit card by clicking here

Option 2)  E-mail to pay by bank transfer, and an ADBA staff person will follow-up directly with you to collect payment

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