In this case, the increased temperature of the boiling water resulted in the formation of calcium carbonate, more commonly known as limescale, on the microplastics' surface. This process binds the ...

The researchers observed an impressive removal rate. For water containing 180 milligrams of calcium carbonate per liter, boiling and filtering removed about 84% of the plastic particles.

Then, the team measured the free-floating plastic content. Boiling hard water, which is rich in minerals, will naturally form a chalky substance known as limescale, or calcium carbonate (CaCO 3).

All acids are soluble in water. They release ... Place the test-tube and boiling tube side by side in a test-tube rack. Carefully add the calcium carbonate to the acid – record your observations ...