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Scientists Develop Green Technology for Water Purification

From Zee News , Published on 3 April 2016

Indian scientists have developed an eco-friendly nanotechnology for water-softening applications that could be used in civic water treatment plants for generating potable water, said the official of a technical institute.

The team from Institute of Advance Study in Science & Technology (IASST) in Assam's Guwahati, crafted a biopolymer using a naturally occurring substance, called chitosan (obtained from the hard outer skeleton of shellfish, including crab, lobster, and shrimp) as a backbone for the carbon nanoparticles to sit on.

"In the biopolymer, nanoparticles are the functional parts of the technology. They remove calcium and magnesium components of water through ion exchange, the same process that is used by common water purifiers," Devasish Chowdhury, associate professor, physical sciences division, IASST, told IANS.

"This material, we report, is the first of its kind with potential to act as a biodegradable and green material for water-softening applications," he said.

Published online on March 30 in the journal Nanoscale, the work involved IASST's Upama Baruah and Achyut Konwar.

While conventional water-softening techniques use synthetic resins, Chowdhury said that the novel technology is biodegradable as well.

"We have applied it to pond water samples successfully. This could be used in civic water treatment plants since they do not have very effective water-softening methods and the resulting treated water is very crude," he added.

For additional reading on green technology, please refer to the following links:
How Tech Companies are Promoting Sustainability
How Google Earth Promotes Environmental Protection in Near Real-Time
The Role of Technology in Sustainability

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