Students show their models at the science exhibition in Shri Krishna Science Centre in Patna on Wednesday. Picture by Ranjeet Kumar Dey

Patna, Nov. 9: Armed with loads of scientific temperament and the hope for a better future, students from various schools attended the innovative project exhibition at Shri Krishna Science Centre today.

Satyam Kumar, a student of Government Boys High School, LBS Nagar, displayed his model for minimising Ganga pollution at Shrikrishna Science Centre. Kumar had received the Junior Scientist Award in Gujarat from President Pratibha Patil in 2009. Today, he impressed the judges as well as students who were seeing his chart paper presentation on World Science Day. Around 15 students from different city schools, including St Michael’s High school, BD Public School, BN Collegiate School and IGP School, Danapur, displayed their science models and chart paper presentations on innovative projects.

Satyam said minimising river pollution was a major concern and so he thought of taking up this subject as his project. Explaining his project, he said: “I have shown the solution through a chart paper presentation. I have shown three different tanks that can be used for filtering of domestic drain water that flows directly into the Ganga.

In this process, the domestic waste also reaches Ganga in the form of oil and other waste particles. The purification of the sewage water starts from the very first tank. In the process of filtration, the particles would start floating on the surface of water in the first tank. In the second tank, a kind of alarm is fixed that would start ringing after compression created by the plastic material. It would ring after the tank is full of plastic contents and when it is compressed the alarm rings. The alarm is a reminder that signals that the second tank is overloaded with plastic contents and needs to be unloaded. In the third tank, the oil content is purified with the help of a net. Satyam said the project could be of much help if it is modified for mass use and made at a bigger level. “Chief minister Nitish Kumar can use this model. It will be very effective,” Satyam said.

Kumar Abhishek, a Class XII student of St Michael’s High School, came up with his model of automatic crop regulator. In his model, Abhishek showed how circuits spread across fields and connected with the water pump could solve the problem of decreasing moisture level. The circuits work automatically and send the message of low moisture content to the pump house, which on receiving it, starts operating automatically and provides sufficient water to the fields. Abhishek said he spent Rs 600 on his project.

Ashok Kumar Gupta, a retired professor and head of botany department, Patna University, delivered a lecture on “Can the planet survive with seven billion”.

Stressing on the consequences of increasing population, Gupta termed it a million-dollar question as to how the necessities of life could be provided to each and every one if the population continues to grow at this rate.