I'm sure that it will collect thousands of tons, which is great. I'm less sure about how much microplastic it will be able to catch. The article mentions ''tiny plastic'' but doesn't mention the micro stuff. While microplastic is an established term, referring to ''tiny plastic'' instead looks a bit like PR marketing to me. Unfortunate, because it's a start.
How can you not love science done with tangerines:
Dr Frans Buschman, a researcher in environmental hydrodynamics from the independent institute Deltares, has tested the barrier in Amsterdam, using about 1,000 tagged tangerines. “We released them at several points and counted how many were captured,” he says. “From the side of the catchment system it was up to 90%; sometimes on the other side we noticed it was substantially lower, probably because there’s a one spot where the bubble intensity is not so high, and some tangerines were passing there.”