Nanomaterials are extremely small particles with nanoscale dimensions ranging from 1 to 100 nanometers. Green nanotechnology is when nanotechnology is used to improve the environmental sustainability of processes that produce negative externalities. It also refers to the usage of nanotechnology products to improve sustainability. Making green nano-products and employing nano-products to enhance sustainability are two examples. Biological approaches are used to create green nanomaterials or nanoparticles. Natural materials such as plants, microbes, and organic polymers such as carbohydrates, proteins, and lipids are actively involved in the synthesis of green nanoparticles. Nanomaterials play a crucial role in wastewater treatment systems due to their small size, however they limit the ability to target highly particular spots.
Nanotechnology can help solve problems in the water treatment industry, particularly the technical hurdles of removing contaminants including infections, toxic heavy metals, pesticides, and other persistent and hazardous substances. It's a game-changing technology with the ability to solve the present water treatment crisis' problems. To ensure safe drinking water, the elimination of micropollutants, and the development of industrial production processes through the use of flexible water treatment systems, there is an essential need for efficient and creative water treatment technology. Because of their greater efficiency and specific properties, such as a high reaction rate and surface-to-mass ratio, nanomaterials offer efficient, low-cost, and environmentally acceptable alternatives to conventional treatment materials.