Lalita, is a student from Delhi Public School, Damanjodi. Lalita will be mentored by Google to build the project.
Class IX student from Odisha, Lalita Prasida Sripada Srisai, won the 'Community Impact Award' at the Google Science Fair in California on Tuesday.
Lalita, who hails from a small town named Damanjodi in Koraput district in Odisha, developed a low-cost bio-absorbent based water purifier that uses waste corn cobs as key ingredient. Lalita won the award in 13-15 years age group. Lalita received 10,000 US dollars as prize money.
Lalita, is a student from Delhi Public School, Damanjodi. Lalita will be mentored by Google to build the project.
About the project:
Lalita says that her study reveals a novel and cheap method of cleaning waste water from domestic and industrial sources by utilising one of the most under-utilised agricultural wastes. Her project is based on the scientific principles of Adsorption by immobilising the contaminants with the help of corn corbs.
On the Google Science Fair project, Lalita says:
"The study reports adsorption of contaminants, colour dyes and suspended particles from domestic waste water and industrial effluents by corn cobs. The corn cobs were collected from local farmers, washed thoroughly with water, sun dried, cut into long and small pieces, ground to powder and burnt in suitable conditions to form activated charcoal. These processes were done to effectively study the phenomenon of adsorption of contaminants in waste water by allowing contaminated water to pass through different layers of corn cobs. Visual observation and simple physico-chemical tests were conducted to study the presence or absence of colour dyes, suspended particles, oxides of salts, detergents, oils and heavy metals in waste water released from domestic households and industries. The study revealed that agricultural bio-wastes like corn cobs are cheap and best adsorbents to clean domestic and industrial waste water. It is a cost-effective and simple to follow technique."
She also says that this project will open a new market value of the corn cobs which are considered as bio-waste till date.
Read more on her project here.
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