Application of Nanoparticle in Wastewater Treatment

The goal of this review paper is to understand the potential antibacterial effect of silver nanoparticles (Ag-NPs) on biological wastewater treatment processes. This review presents an overview of the classes of NP relevant to the environment and summarises their formation, emission, occurrence and fate in the environment. Today, NPs, nanomembrane and nanopowder used for detection and removal of chemical and biological substances include metals (e.g. cadmium, copper, lead, mercury, nickel, zinc), nutrients (e.g. phosphate, ammonia, nitrate and nitrite), cyanide, organics, algae (e.g. cyanobacterial toxins) viruses, bacteria, parasites and antibiotics. Nanomaterials reveal good results than other techniques used in water treatment because of its high surface area (surface/volume ratio). It is suggested that these may be used in future in large-scale water purification. Present study also established the combined effect of US + NP and suggested that it may be more effective than applying them individually. We have proposed that this may be a useful technique in water purification system.