IIT/Engineering

NIT Silchar researchers comes up with purification method for arsenic laced water

New Delhi :
National Institute of Technology, Silchar (NIT Silchar) researchers has come up with purification method for arsenic laced water. The team of researchers led by M Ahmaruzzaman has come up with a unique solution to purify water, laced with arsenic. Their study will help reduce water pollution & also make water in rural areas drinkable. The process of purification includes using renewable bio-precursors (naturally available feedstock) for dearsenification and defluoridation — processes to remove arsenic and fluoride — which will get rid of the contamination and generate pure, drinking water in rural areas.

Groundwater has a high risk of getting contaminated –

Water pollution in general, and arsenic pollution in particular, is a major concern, especially in the northeastern states and some parts of West Bengal, where groundwater has a high risk of getting contaminated.

Low-cost bio-precursors such as saw dust –

The research group has designed and developed a biogenic (environment-friendly feedstock), cost-effective and highly efficient Carbon-SnO2 nanocomposite adsorbent material using renewable and low-cost bio-precursors such as saw dust, sunflower oil and inflorescence of imperata cylindrica, a species of perennial rhizomatous grass.

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Focused on developing new nanomaterials –

Currently, Ahmaruzzaman, who is the leading member focused on developing new nanomaterials for abatement of water pollution. “Our ongoing research activities focused on the construction of highly efficient adsorbents and destructive photocatalysts for tackling water contaminants. These provide the groundwork for the designing of nanomaterials to be employed for combating water pollution, thereby also fulfilling the dual objective of mitigating health risks engendered by the emerging water contaminants and restoring the much perturbed ecological balance,” said Ahmaruzzaman.

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IIT Guwahati researchers develops method to transform industrial waste into valuable chemicals

New Delhi :
Researchers of Indian Institute of Technology, Guwahati (IIT Guwahati) has developed a method to transform industrial waste into valuable chemicals. Researchers formulated efficient ‘pincer’ catalytic systems for the same.

The conversion of valuable intermediates –

Tiny amounts of these “pincer catalysts” repeatedly convert large amounts of industrial waste such as glycerol into lactic acid and hydrogen. Such catalysts also efficiently convert bioethanol, a low-energy density fuel, into high-energy density butanol. The conversion of valuable intermediates such as glycerol and ethanol, produced during the processing of biomass, into industrially useful chemicals has elicited much interest worldwide.

Can be transformed into lactic acid and hydrogen –

This can be more understood as, Glycerol, which is a by-product in biodiesel production, can be transformed into lactic acid and hydrogen – the former is extensively used in food, pharmaceutical, cosmetic and polymer industries, and the latter in the energy sector. Similarly, ethanol obtained from biomass can be converted into high quality fuel. Bioethanol, which has lower energy density than gasoline and corrodes engine parts when used directly, can be transformed into higher energy butanol that is non-corrosive in nature.

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