Process for separating nanoplastics from aqueous matrices by means of using carbon black particles

A process for separating nanoplastics from aqueous matrices comprising nanoplastics, the process comprising:

• a) providing an aqueous matrix comprising nanoplastics,
• b) adding carbon black or magnetized carbon black particles to the aqueous matrix provided in step a) to form nanoplastic/carbon black or magnetized carbon black particle aggregates, wherein the carbon black has a carbon content of at least 95% by weight and the size of the carbon black or magnetized carbon black particles is comprised between 10 and 80 nm, and
• c) separating the nanoplastic/carbon black or magnetized carbon black particle aggregates from the mixture obtained in step b).