Title:
Innovative Techniques to Reduce Ammonia and Methane Emissions from Digestate Application to Field
Author(s):
Scotto di Perta, E., Pindozzi, S., Cervelli, E., Di Costanzo, L., Assirelli, A., Faugno, S.
Document(s):
Paper
Poster
Abstract:
This study deals with the innovative micro-injection technique, which allows the slurry to be injected at 5 cm deep into the soil with a reduced traction force, a crucial point for the farms. To this purpose, two slurry spreading techniques were compared in laboratory under controlled temperature and humidity conditions: (i) the band spreading application (BS) and (ii) the microinjection application (MI) of a liquid fraction of cow digestate. The slurry spreading was simulated using 6 glass vessels filled by 3770 g of sieved soil at 5 mm, characterized by a water-filled pore space (WFPS) of 60%. During a monitoring period of 5 days after the slurry application, ammonia and methane emissions were measured. The cumulative ammonia emissions measured for the band spreading and micro-injection were 985,2 mgN m-2 and 24,6 mgN m-2, respectively.
Keywords:
ammonia, methane, emission factor, agricultural biogas plants, digestate
Topic:
Bioeconomy Sustainability, Impacts and Policies
Subtopic:
Environmental impacts
Event:
28th European Biomass Conference and Exhibition
Session:
4AV.2.41
Pages:
864 - 866
ISBN:
978-88-89407-20-2
Paper DOI:
10.5071/28thEUBCE2020-4AV.2.41
Price:
FREE
