Nanocomposite Metal Oxide/Hydroxide Adsorbents for Advanced Wastewater Treatment and Toxicological Risk Assessment for the Aquatic Environment †.

This document discusses the use of nanocomposite metal oxide/hydroxide adsorbents for advanced wastewater treatment and the assessment of their toxicological risk to the aquatic environment. Phosphorus, an important nutrient for agriculture, is often removed from wastewater due to its negative environmental impact. Metal oxide/hydroxide nanocomposites have shown promise in selectively removing phosphorus from wastewater, but their environmental safety is rarely addressed. This study evaluates the ecotoxicological hazard of 10 metal oxide/hydroxide nanocomposites using toxicity tests on marine bacteria and crustaceans. The results indicate that composites containing zinc are harmful to both organisms, while those without zinc are non-toxic. The study provides valuable insights for engineering applications and highlights the importance of considering environmental safety when using nanocomposite adsorbents. [Extracted from the article]