D5.4 Final Report on operation of the surface and water column removal technology in the Porto region

The present document corresponds to MAELSTROM’s Deliverable 5.4. This deliverable aims at summarising the implementation of the Bubble Barrier technology, includingthe supplying solar panels, in Ave River estuary, Portugal (MAELSTROM Task 5.4), the efforts performed to understand its impact on the environment (in terms of energyconsumption, carbon footprint, noise and ecological impacts), and to present the technology effectiveness through the analysis of the riverine litter (RL) and microplastics (MP) retained by the technology during the pilot performing period. The document is structured around the phases of installation, implementation, optimization, assessment and impacts of the Bubble Barrier technology.