NANO TECHNOLOGY AND ENVIRONMENT: A CRITICAL ANALYSIS

Nanoscaled particles have a relatively larger surface area per unit mass which is the critical factor to increase mechanical modulus and other physical and chemical properties. Nanotechnology increases the strengths of many materials and devices, as well as enhances efficiencies of monitoring devices, remediation of environmental pollution, and renewable energy production. In general, nanotechnology devices consume less energy; reduce material wastes, and help in monitoring devices. Nanotechnology can also be used to reduce and prevent the toxicity of nanoparticles in an environment more efficiently. Nanoparticles have higher surface areas than bulk materials which can cause more damage to the human body and environment compared to the bulk particles. Therefore, concern for the potential risk to society due to nanoparticles has attracted national and international attention. The present paper discusses the positive and negative impacts of nanotechnology on man and the environment