Effervescence is being used as a tool to collect plastic in rivers, directing it to the surface where it can be caught and prevented from reaching the ocean. The Great Bubble Barrier, founded by sailing enthusiasts, uses a curtain of bubbles created by compressed air to capture plastic and debris in rivers and canals, with pilot data showing that the barriers can capture 86% of plastic in rivers. Bubble barriers offer advantages over traditional plastic trapping systems by covering the full width and depth of a waterway and serving as a monitoring tool for cities to track garbage entering waterways. City officials are being convinced of the importance of catching plastic pollution in waterways, with local initiatives stepping up to address the issue and cities showing enthusiasm for taking action to combat plastic pollution.
https://triplepundit.com/2026/great-bubble-barrier-plastic-pollution-netherlands/