December 2016 Current Affairs

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IISER researchers develop Gelator to scoop out marine oil spills

IISER researchers develop Gelator to scoop out marine oil spills
03 November 2016 Current Affairs: The Indian Institute of Science Education and Research (IISER), Thiruvananthapuram, developed a compound, called Gelator, to scoop out marine oil spills.

The results based on laboratory studies were published recently in the journal Angewandte Chemie.

A team led by Dr. Kana M. Sureshan from the School of Chemistry used glucose as a starting material and through several chemical reactions produced compounds (gelators) that selectively congeal oil, including crude oil, from an oil-water mixture.

Highlights of the Gelator : The gelators, which are in a powder form, can be easily applied over oil-water mixture. In addition, they do not cause any environmental damage.

It can recover oil from oil-water mixture and can be reused several times. However, in the case of crude oil, the gelator cannot be recycled.The gelator molecule is partly hydrophobic and partly hydrophilic. While the hydrophilic part helps in self-assembling to form gelator fibres, the hydrophobic part is responsible for its diffusion into the oil layer.

To achieve better diffusion of the molecule into the oil phase and enhance the oil recovery, the researchers increased the hydrophobicity. This was done by adding an aromatic/alkyl group at some part of the molecule.

Since the outer part of the fibre is hydrophobic, oil tends to gets into the spongy network made of fibres.

Once inside the fibre network, oil loses fluidity and becomes a gel. As the self-assembly is strong, the gel maintains its structure and rigidity even under pressure.


December 2016 Current affairs

November 2016 Current affairs
30 NOV
NEWS
29 NOV
NEWS
28 NOV
NEWS
26 NOV
NEWS
25 NOV
NEWS
24 NOV
NEWS




October 2016 Current affairs
31 OCT
NEWS
27 OCT
NEWS
26 OCT
NEWS
25 OCT
NEWS
24 OCT
NEWS
22 OCT
NEWS

September 2016 Current affairs
30 SEP
NEWS
29 SEP
NEWS
28 SEP
NEWS
27 SEP
NEWS
26 SEP
NEWS
24 SEP
NEWS

August 2016 Current affairs
31 AUG
NEWS
30 AUG
NEWS
29 AUG
NEWS
27 AUG
NEWS
26 AUG
NEWS
25 AUG
NEWS



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