Cheap & indigenous adsorbents based approach to drinking water purification
The idea of this project is to look for the alternatives of expansive absorbents like activated carbon and other purification methods like RO. One way of doing this is to use indigenous substances like rice husk, neem leaves for adsorbing the impurities. The project mainly aim at making a list of such substances, testing them and finally come out with DIY(Do-It-Yourself) type of manual that can guide any literate person to make an efficient water filter by just using the available resources around him.
The project is divided in 3 phases. The first phase which has been completed focused on doing an extensive study of research papers available and developing a database of all the indigenous and cheap substances which can act as a potential adsorbent. In the second phase we are currently testing 5 such substances (Rice husk, Egg shells, Wheat barn, neem leaves, coconut husk) in lab for their effectiveness in removing common impurities like fluoride. In the final phase we would use the most effective of these tested adsorbents in designing a cheap and compact water filter.