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WBA Training | Managing Summer Temperatures and Biological Health

19th December 2023 @ 12:30 pm - 5:00 pm

£147.50 – £295.00


Tuesday 19th December, 12:30-17:00 GMT timezone

The training is delivered by Angela Cronjé, a chemical engineer with 20 years experience in organic waste processing on operational plants. 

This training is about the effect of temperature variation on biological health and gas production for AD. 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. Gas production can also suffer when process temperatures drop due to low ambient temperatures or failures in heating systems. Operators will gain a better understanding of how process temperatures vary, what this means for biological health and gas production and what control measures should be considered to mitigate the risk of serious biological failures.  




  • 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 World Biogas Association is the global trade association for the biogas, landfill gas and anaerobic digestion (AD) sectors, dedicated to facilitating the adoption of biogas globally. We believe that the global adoption of biogas technologies is a multi-faceted opportunity to produce clean, renewable energy while resolving global issues related to development, public health and economic growth. We seek to represent all organisations working in the biogas industry at the international level across the world, including; national associations, biogas operators and developers, equipment providers, water companies, the agricultural sector, waste companies, and academic & research institutions.



Discounts available for group bookings and non-OECD countries.


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19th December 2023
12:30 pm - 5:00 pm
£147.50 – £295.00


World Biogas Association
+44 (0) 20 3735 8116
View Organiser Website




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