Portable Geo Specific Water Filtration Bottle

Students of Indian Institute of Technology Madras Ramesh Kumar and his team member Anupam Chandra won the award appreciation for developing a prototype of Portable Geo Specific Water Filtration Bottle. He carried his project work under guidance of Prof. T. Pradeep.

In all natural calamities, those who get most affected are the poor and affordable solutions are essential for alleviating their sufferings. In regions, such as West-Bengal and Assam where flood water can also contain regional contaminants such as arsenic, rapid removal of particulates, microbial, chemical and regional contaminate such as arsenic and fluoride require a combination of technologies to be effective at acceptable flow rates. A personal water purifier to deliver one liter of clean water from arsenic contaminated water requires materials with enhanced removal kinetics and high adsorption capacity so that filter is effective. This is currently possible only with advanced nano-materials in conjunction with other technologies such as nanofiltration, reverse osmosis, etc. Here it demonstrates an affordable purifier involving multiple technologies for microbially, chemically and heavy metal safe drinking water. In this purifier bottle, feed water passes through four stages of filtration, 1) reusable pre-filter, which removes all particulate matter, 2) microfiltration / ultrafiltration hollow fiber membrane cartridge, which removes all microbial and viral contaminants, 3)geo-specific filtration unit, which removes geo-specific contaminant such as arsenic, fluoride and pesticides, 4)silver nanoparticles decorated activated coconut charcoal, which provides antimicrobial and organic contaminant removal capacity to the water purifier bottle. To develop pressure required in feed water container vessel for microfiltration or ultrafiltration, a hand operable bellow pump is added to the unit. Cheap and indigenously developed filtration membranes make this water purifying device affordable for mass distribution to the affected population of a natural disaster.

Dr. R A Mashelkar, Chairperson, Research Advisory Committee, SRISTI and NIF, honored Ramesh Kumar, Department of Nano Science and Engineering,Indian Institute of Technology Madras, with the prestigious Gandhian Young Technological Innovation (GYTI) Award Appreciation at a function held at Rashtrapati Bhawan on March 5.

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