title: A floating coverage system for digestate liquid fraction storage.
abstract: Anaerobic digestion is booming in the nations of Europe. In fact, Italy alone has approximately 500 plants in operation or in some phase of start-up. Previous studies have made evident the potential that lies in digested manure residual biogas. Nevertheless, much of the potential goes unrealized when enormous amounts of digestate are produced, but are then stored in uncovered tanks. This research work designed, constructed, and tested a low-cost digestate storage tank cover system capable of abating CO2eq atmospheric emissions and then recovering the biogas. The experiment, carried out at a 1 MW electric anaerobic digestion plant, demonstrated that collecting the residual biogas from the digested liquid fraction storage tank made it possible to avoid atmospheric emissions of up to 1260t CO2eq annually and to increase the methane yield of the installation by 3%.
authors.affiliation: Department of Agriculture, Forestry and Food Sciences, University of Torino, via Leonardo da Vinci 44, 10095 Grugliasco, TO, Italy.
authors.forename: Paolo
authors.initials: P
authors.lastname: Balsari
authors.forename: Elio
authors.initials: E
authors.lastname: Dinuccio
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Gioelli
mesh_terms: D001709:Biotechnology / Q000295:instrumentation* / Q000379:methods*; D008697:Methane / Q000032:analysis; D012621:Seasons; D013696:Temperature; D014865:Waste Disposal, Fluid
chemical_list: D008697:Methane