Executive Summary : | Increasing water toxicity and its purification in different sectors caused enormous concern worldwide. Especially toxic heavy metals (Hg, Cd, Pb, As, Cu, Cr, etc.) water contaminants are causing several health threats for the society due to natural disasters, improper disposal of waste from municipal, educational institution and industry, agriculture and anthropogenic activities. Indeed, a sustainable framework for proper disposal and mitigation of chemical waste is necessary for every educational institution in India. Search for economical and highly efficient materials for wastewater treatment and drinking water purification has witnessed a library of materials benefits in catalytic detoxification, adsorption, micro/ultra-filtration, osmosis, and precipitation of hazardous water contaminants. At this endeavor, we planned to explore materials and methods for multi-stage filtration within portable water purifiers or lifesavers. The portable water purifier is an essential need for hikers, military personnel and even in any disastrous situation for survival. We proposed a two-stage water purification method based on the adsorption for heavy metals contaminated water. Adsorption is an effective and fast process to adsorb pollutants from water and no byproducts are left behind during the purification process. Moreover, we will use an adsorption-based removal process by using a purification column or a replaceable/reusable cartridge filled with COFs and freely available eggshells (ES) biowaste, respectively. A systematic study on materials design, synthesis, characterization, adsorption study and removal efficiency will provide further insights into the mechanism and kinetics of the water purification process. Finally, we envisaged here to replace the existing technology relying on the charcoal filter with an eggshell biowaste, which may significantly impact the commercial market. The investigation of a multi-stage water purification system by using ES biowaste is unexplored to date. |