The Manure Management Network of the Global Research Alliance on Agricultural Greenhouse Gases (GRA) will host a webinar on “B0 for IPCC inventories and biogas production”.This webinar is on B0, also known as biochemical methane potential, which is an estimate of the maximum possible methane production or emission from a substrate. Measurements of B0 can be used to estimate methane emission from stored liquid manure when combined with a kinetic model. Three researchers with extensive experience in methane emission will present some pitfalls and promise in measurement, understanding, and application of B0.The following three presentations will be given at the webinar:• Sasha Hafner: Laboratory measurement of B0: assessment of reproducibility and recommendations for accurate results.• Tony Van Der Weerden: The IPCC model for calculating methane emission from stored liquid manure using B0 data – examples of pitfalls in using standard B0 not accounting for separation or diet affecting B0.• Henrik B. Møller: Overview of a large data set for chemical composition and B0 of cattle manure with different feedings and feed additives.Each presentation will be about 20 minutes giving time to a discussion after presentations.Sasha D. Hafner (https://www.au.dk/en/
[email protected]) is a senior researcher in the Department of Biological and Chemical Engineering at Aarhus University. He has worked for several years in a few research areas related to methane emission. This includes development and evaluation of laboratory methods for measurement of biochemical methane potential and development of related data processing standards and software. Sasha also led the development of a software package called ABM for simulating microbial activity and methane emission from stored manure. He is currently working on application of this tool to predict effects of management on methane emission.Tony van der Weerden is a senior scientist at AgResearch in NZ. His research area is processes regulating gaseous N emissions (nitrous oxide, ammonia) from soils, greenhouse gas emissions (including methane) from manure management, farm-scale GHG footprints and mitigation technologies. He currently co-leads several international projects relating to GHG emissions from manure management systems. He also leads several national projects on GHG emissions and mitigations from pasture-based livestock systems and improvements to NZ’s agricultural GHG inventory. Tony was a lead author of the 2019 refinement of the 2006 IPCC inventory methodology guidelines. Henrik B. Møller is Professor and heads the biogas research at Aarhus University. His research has a focus on anaerobic digestion and all the related aspects such as energy, environmental impact and sustainability. During his research career he have worked with process optimization, biomass selection, energy yield, degradation of xenobiotics and pre-treatment. He has investigated the interactions between feeding of the animals, feed additives and biogas potential. He was among the first Danish researchers looking into the vast energy potential of biogas and was one of the research pioneers in the Danish biogas development and has been initiating the biogas research at AU.
