Use of Fe2O3 nanoparticles in sustainable construction LID systems

Nanotechnology has numerous applications in the field of sustainable construction, which have made it possible to save energy, minimize the use of non-renewable resources and reduce the generation of solid waste, as well as the toxicity of atmospheric emissions. In terms of water environment protection, this technology can provide useful materials for urban runoff water pollution control through LID (Low-impact development) systems, or low-impact developments such as permeable pavements. In this work, the potential of Fe2O3 nanoparticles (NPs) to oxidize pollutants present in urban runoff was evaluated. Synthetic urban runoff water (AEUs) was prepared with 2 ppm N-NH4 +, 0.1 ppm N-NO2- , 4 ppm NO3+ and 2 ppm phenol (C6H60). Thirty-five mL of AEUs and 0.01 grams of NPs were placed in Petri dishes and exposed to sunlight. After eight hours, oxidation of phenol and ammonium ion was demonstrated. These results indicate that these particles could be used to coat permeable pavements and reduce the pollution that urban runoff water contributes to receiving bodies.