“Women of Worth’ awardee Lalita Prasida Sripada Srisai a grade XI student from Damanjodi in Koraput district in Odisha, won the Community Impact Award at the Google Science Fair 2015 held in California.
She developed a cheap way of cleaning waste water, that uses waste corncobs as a key ingredient. The purifier cleans waste water by flowing through different layers of corncobs, which is a cost-effective simple technique that immobilizes contaminants in ponds, reservoirs and water tanks. She was awarded $10,000 as prize money and is being mentored by Google to build the project.
In her experiment Prasida found that waste corncobs are able to absorb contaminants like salt oxides, detergent, suspended particles, coloured dyes, oil, grease and even some heavy metals.
Prasida said she likes to visit nearby villages and observe their lifestyle that revolves around cultivating varieties of crops, from which she developed an interest to focus on science and develop something new related to agriculture.