Prevention is better than a cure: A ‘zero residual nanoadsorbent toxicity’ downstream from its effluent exit point

• Published in: The Science of the total environment 2024-10, Vol.946, p.174479, Article 174479
• Main Authors: Mudhoo, Ackmez, Pittman, Charles U.
• Format: Article
• Language: English
• Subjects: environment; environmental policy; Large-scale water treatment; Nanoadsorbent; Process engineering challenge; research and development; toxicity; Ultrahigh (100 %) separation efficiency; wastewater; Zero residual nanoadsorbent toxicity
• ISSN: 0048-9697; 1879-1026; 1879-1026
• DOI: 10.1016/j.scitotenv.2024.174479

Here, we offer thoughts concerning a ‘zero residual nanoadsorbent toxicity’ environmental policy which we strongly advocate. Our discussions in support of this policy are based on the adage ‘Prevention is better than cure’. Besides emphasizing the need for strict regulations (regional and international), research and development avenues are highlighted for the technology that can achieve ‘zero tolerance’ for residual nanoadsorbent levels escaping and building up in receiving ecosystems. We do not oppose nanoadsorbents. On the contrary, their water and wastewater purification potentials are well recognized. However, they should not be permitted to translocate downstream from the exit point of a final effluent. [Display omitted] •Nanoadsorbent use in large-scale water treatment lacks technological maturity.•A ‘zero residual nanoadsorbent toxicity’ ecological policy is strongly advocated.•100 % magnetic separation and membrane filtration efficiencies are advocated.•Strict regulatory frameworks are needed for nanoadsorbent-based water treatment.