Lettinga Award

Giving the floor to anaerobic innovations

The Call for the 2024 Lettinga Award is now open!

The Lettinga Award is a cash prize of €10,000 and was initiated in 2001 by the Lettinga Foundation. The goal of the award is to stimulate innovative ideas in the field of anaerobic technology aimed at resource recovery for closing cycles. Anaerobic processes can play a crucial role in enabling the recovery of resources, especially in combination with additional physical-chemical technologies. This year’s topic is: innovative technological systems, that include anaerobic processes, for closing cycles.

The Lettinga Award is awarded to a project, not an individual or institute. The innovative idea should be in the discovery phase (TRL, Technology Readiness Levels 1 or 2) and should not be part of a bigger project. The award is meant to boost beginning ideas towards a proof of principle. For more information, download the call here.


Present your idea in a PowerPoint presentation (max. 10 slides) and short abstract (max 500 words). In your application explain your proposed project, provide details on how you will use the funds, and describe the potential impact of your project. Please send your application package to info@leaf-wageningen.nl before the first of May 2024 and include “Lettinga Award 2024” in the subject line.
We are looking forward to your ideas!

The winner of the Lettinga Award will be announced during the closing ceremony of the IWA 18th World Congress on Anaerobic Digestion. This international conference, which is supported by the IWA Anaerobic Digestion Specialist Group, is an event to discuss recent advances in anaerobic digestion and related processes. The theme of the 18th World Congress on Anaerobic Digestion is “Bridging waste to value through anaerobic digestion.” The conference will be held in Istanbul, Turkey on June 2-6, 2024. For additional information and to register for the conference, please visit https://iwa-ad18.org/.

The winner of 2022

The Lettinga Award 2022 was awarded to the project COACE: An innovative system for closing carbon cycles, entered by Dr. Rhiannon Chalmers-Brown of the Sustainable Environment Research Centre (SERC), University of South Wales, UK.

The COACE process bubbles off-gases from the blast furnaces on-site through sewage sludge containing bacteria that consume carbon monoxide and carbon dioxide. The product from those bacteria is acetic acid, which can be used for a huge range of commercially viable end-uses such as paints, bioplastics and polymers, where production currently relies on fossil fuels such as gas and oil.

All previous winners


COACE: An innovative system for closing carbon cycles

Dr. Rhiannon Chalmers-Brown


Anaerobic bioreduction of waterborne element sulphide particles for recovery from electronic waste

Dr. Simon Hageman


Dark photosynthesis: anaerobic biosynthesis of food from wastewater and electricity

David Strik, Mathijs van der Zwart, Cees Buisman


Closing cycles with a biogas powered milk chilling solution for East African smallholder farmers

SimGas BV


Adding value to Anaerobic Digestion technology by production of biobased materials (biocement and fertilizer) and methane enriched biogas using alkaline silicate minerals

Shiva Salek


Bio-Electrochemically upgrading the CO2 and H2S fractions of biogas: increasing the efficiency and adding value to Anaerobic Digestion technology

Shelley Brown-Malker, Rene Rozendal, Damien Batstone, Paul Jensen, Cristian Picioreanu, Korneel Rabaey, Jurg Keller


Immobilization of redox mediators in nanostructures for the anaerobic treatment of industrial wastewaters

Dr. Francisco Cervantes


A new anaerobic technology for efficient mineralization of lipids / LCFA

Dr. Madalena Alves


Anaerobic Granular Sludge Bed Technology Web Pages

Dr. Jim A. Field and Dr. Reyes Sierra

Contact the Lettinga Foundation

LeAF manages the secretariat and administration of the Lettinga Foundation. For more information about the foundation and its activities, please feel free to reach out to LeAF.