The issue of contaminated water has come to the forefront since crises such as the one seen in Flint, Michigan, and there may be a solution in underwater robots cleaning water.
These tiny robots are able to suck pollutants such as lead out of industrial waste water that has been known to make people sick. Each of these robots are tube-shaped and smaller than the width of human hair. In only an hour, thousands of these robots working together can remove 95% of the lead in the water they are placed in.
Once the graphene-based microbots have filled up with lead, they are removed from the water using a magnetic field, and once treated with an acidic solution that removes pollutants, they can be reused.
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