Nano-adsorbents and their application in removing heavy metals from aquatic ecosystems and aquarium

Nowadays, releasing of heavy metals to aquatic systems is increasing due to development of various industries and factories. Heavy metals are highly resistant to degradation and could accumulate in ornamental fish and other fish body as a human food chain and be dangerous for human health. Removing of these pollutants from water using common methods are very time-consuming and sometimes expensive. Thus, nanotechnology introduced to solve this problem, recently. Nanotechnology plays a key role in pollution prevention, identification, measurement and treatment of heavy metals. Reactivity properties of nanoparticles in converting harmful pollutants to harmless substances due to small size, high surface area, crystalline form and unique network has been proved. Nanoparticles mechanisms are very different according to their structures. This  study was investigated types of nano-adsorbents and their application in removing heavy metals from aquatic ecosystems and aquariums.