Fig. 1: Life cycle impact assessment results for regionalized freshwater (FE_Reg) and marine (ME_Reg) water eutrophication at the Metropolitan Area of Barcelona (AMB), climate change (GWP100), water consumption (WC) and abiotic resource depletion (ADP) for the total functional unit for current and projected peri-UA areas in the AMB.
From: Leveraging circular nutrients to improve the sustainability of peri-urban agriculture
Three circular nutrient strategy (CNS) scenarios are shown in the columns: Struvite, Compost and Struvite + Recovered ammonium salts. Three prospective scenarios are shown in the rows: Current (ecoinvent v3.9.1 cutoff model), prospective BAU in 2050, prospective 2 degree (RCP2.6) in 2050 (prospective scenarios use prospective ecoinvent database based on the IMAGE SSP2 BAU 2050 and RCP2.6 2050 scenarios, created using Premise tool v1.8.2); yr= year; MinFert= mineral fertilizer (linear system). Green check marks indicate that the impacts of the CNS scenario are lower than in the linear system by the percentage shown. Red x marks indicate that the impacts of the CNS scenario are higher than in the linear system by the percentage shown.
