Technology Innovations

Posts Tagged ‘Climate


A team of scientists at the National Chemical Laboratory, Pune, and the Institute of Chemical Technology, Mumbai, has developed a non-toxic technique to recycle plaster of Paris (PoP) waste from hospitals and convert it into useful materials such as ammonium sulphate and calcium bicarbonate.

In hospitals and other medical centers PoP is mainly used for setting broken or fractured bones or for making casts in dentistry. It is a hazardous waste, loaded with bacteria, and affects not only the environment, but also people who collect, segregate, and dispose it.

The new technique treats PoP waste with ammonium bicarbonate solution with a concentration of 20 percent. The solution disintegrates the waste into high value and non-toxic chemicals, ammonium sulphate and calcium bicarbonate in the form of sludge in 24-36 hours at room temperature.

The resultant material ammonium sulphate can be utilized as nitrogen fertilizer, fire-extinguishing powder, and in pharmaceutical, textile, and wood pulp industries, while calcium carbonate can be easily used in steel manufacturing.

The new technique can also be used to disintegrate PoP waste from idols immersed in water bodies.

The study results have been published in the International Journal of Environmental Science and TechnologyRead the full report by Vaishali Lavekar.


A team of students from India recently won the US $60,000 grand prize at the Dell Social Innovation Challenge (DSIC 2013) for its project, Solar Conduction Dryer. The winning team comprised two Indian students, Shital Somani and Vaibhav Tidke from Mumbai.

Their project aims at addressing the 20-30 percent food spoilage rate for poor rural Indian farmers via cost-effective dehydrators powered by solar conduction. The innovation will enable farmers to keep more of their crops and sell dehydrated fruits and vegetables as another income source. Read more


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