![]() ![]() This is because of their large surface area, high aspect ratio and greater chemical reactivity along with lower cost and energy. organic, inorganic and biological pollutants. It can remove almost all three types of pollutants, i.e. Carbon nanotubes (CNTs) have emerged as the foremost nanomaterial (NM) for water purification. Unfortunately, 780 million people throughout the world, especially in developing countries, have no access to fresh water facilities. Gaining access to clean and safe water is a basic human right. We pay particular emphasis on measuring risks based on CNT physico-chemical properties such as diameter, length, aspect ratio, type, charge, hydrophobicity, functionalities and so on which determine CNT behaviour in waste water treatment plants and subsequent release into the environment. We suggest that this could form the basis of an acceptable CNT safety guideline. ![]() We propose a CNT safety clock that will help assess risk appraisal and management. In this paper, we close these gaps and suggested several new risk analysis roots and framework extrapolations from CNT-based water purification technologies. The absence of universal CNT safety guidelines is a specific hindrance. Although scientific efforts to design risk estimates are evolving, there remains a paucity of knowledge on the unknown health risks of CNTs. ![]() New risks associated with CNTs are evolving through different waste water purification routes, and there are knowledge gaps in the risk assessment of CNTs based on their physical properties. Current risk measurements of CNTs are overshadowed by uncertainties. Without nanosafety guidelines, the long-term sustainability of carbon nanotubes (CNTs) for water purifications is questionable. ![]()
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