Current Approaches and Challenges in Advanced Oxidation Processes for Nanoplastic Degradation

The proliferation of plastic production has led to a surge in nanoplastic (NPs) pollution, posing significant environmental and health risks. Despite efforts to mitigate plastic waste, NPs persist as a significant challenge due to their small size, high surface-to-volume ratio, and complex nature. This review analyzes existing research on advanced oxidation processes, focused exclusively on NPs remediation, including ozonation, electrochemical, photocatalytic, and plasma-induced processes. Gaps in the development of effective processes and analytical methods for the treatment of such plastic particles with sizes lower than 1 µm are highlighted, and future directions are suggested. This study aims to improve understanding and support sustainable solutions for the remediation of NPs from contaminated water sources, in alingment with the United Nations' Sustainable Development Goal 6.