Iranian Nanotechnology Society International Journal of Nanoscience and Nanotechnology 1735-7004 21 2 2025 06 01 Nanotechnology in Wastewater Treatment: Innovations for a Sustainable Future - A Review 109 121 737972 10.22034/ijnn.2026.2054339.2637 EN Dalila Ziani Department of Geotechnics and Hydraulics, Faculty of Civil Engineering, University of Science and Technology Houari Boumediene, Bab-Ezzouar, Algiers, Algeria 0000-0003-0488-8679 Aziz Maaliou Department of Geotechnics and Hydraulics, Faculty of Civil Engineering, University of Science and Technology Houari Boumediene, Bab-Ezzouar, Algiers, Algeria 0000-0002-8332-0573 Leila Djekoune University of Science and Technology Houari Boumediene, Faculty of Mechanical and Process Engineering, Department of Environmental Engineering, Laboratory of Industrial Process Engineering Sciences (LSGPI); BP 32, El-Alia-Bab-Ezzouar, 0000-0001-9044-1667 Abderzak Moussouni University Center Abdelhafid Boussouf Mila, Institute of Science and Technology, Department of Civil Engineering and Hydraulics, Laboratory of Geotechnical and Hydrological Environment (LEGHYD); BP 26 RP, Mila, 43000, Algeria 0009-0000-5147-2938 Journal Article 2025 03 04 This study is a summary of recent nanotechnology developments for wastewater treatment and how effective nanomaterials are in purifying and decontaminating water. A literature review has identified the most promising nanomaterials: carbon nanotubes, metal nanoparticles and nanostructured membranes, which can adsorb and break down organic and inorganic pollutants. The studies mainly focused on characterizing the physical and chemical properties of these nanomaterials and testing their efficiency in treating wastewater in different environments. The results show that nanotechnologies are not only more efficient than traditional methods but also use less energy and produce less toxic by-products. In summary, nanotechnologies offer exciting opportunities for better and more sustainable wastewater treatment, but more research is needed to evaluate long-term environmental impact and safety before implementation. https://www.ijnnonline.net/article_737972_33cf2592a8792bbd598029a591a76820.pdf