Monday January 21, 2019
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Zareen gives speech on menstrual hygiene

Zarine Khan was invited as the chief guest for the one-day state level awareness workshop, which is an effort by the state government to create awareness about menstrual hygiene

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Zareen Khan talked about menstrual hygiene. IANS
Zareen Khan talked about menstrual hygiene. IANS

Zarine Khan was invited as the chief guest for the one-day state level awareness workshop, which is an effort by the state government to create awareness about menstrual hygiene. Many girls of Chhattisgarh participated in it.

Hate Story 4
Zareen Khan talked about hoe girls are unaware about their hygiene. Wikimedia Common

“I am humbled to be invited for such an important cause. It is a great initiative taken by the government and I am more than happy to create awareness through my speech,” Zareen said in a statement.

“Thanks to Akshay Kumar who showcased the cause so beautifully through his film ‘Pad Man’,” she added.

Also Read: Zareen Khan’s ‘Hate Story 4’ Shoot Starts In London

“Pad Man”, starring Akshay, is based on the story of a real-life superhero who invented a low-cost sanitary pad manufacturing machine to bring a menstrual hygiene revolution for women. IANS

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New Technology That Can Clean Water Twice As of Now

more than one in 10 people in the world lack basic drinking water access, and by 2025, half of the world's population will be living in water-stressed areas.

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Novel technology cleans water using bacteria

Researchers, led by one of Indian-origin, have developed a new technology that can clean water twice as fast as commercially available ultrafiltration membranes, an advance that brings hope for countries like India where clean drinking water is a big issue.

According to a team from the Washington University in St. Louis, more than one in 10 people in the world lack basic drinking water access, and by 2025, half of the world’s population will be living in water-stressed areas.

The team led by Srikanth Singamaneni, Professor at the varsity, developed an ultrafiltration membrane using graphene oxide and bacterial nanocellulose that they found to be highly efficient, long-lasting and environment-friendly.

The membrane technology purifies water while preventing biofouling, or build up of bacteria and other harmful micro-organisms that reduce the flow of water.

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The membrane technology purifies water while preventing biofouling. VOA

For the study, published in the journal Environmental Science and Technology, they used bacteria to build such filtering membranes.

The Gluconacetobacter hansenii bacteria is a sugary substance that forms cellulose nanofibres when in water.

The team then incorporated graphene oxide (GO) flakes into the bacterial nanocellulose while it was growing, essentially trapping GO in the membrane to make it stable and durable.

They exposed the membrane to E. coli bacteria, then shone light on the membrane’s surface.

After being irradiated with light for just three minutes, the E. coli bacteria died. The team determined that the membrane quickly heated to above the 70 degrees Celsius required to deteriorate the cell walls of E. coli bacteria.

While the bacteria are killed, the researchers had a pristine membrane with a high quality of nanocellulose fibres that was able to filter water twice as fast as commercially available ultrafiltration membranes under a high operating pressure.

When they did the same experiment on a membrane made from bacterial nanocellulose without the reduced GO, the E. coli bacteria stayed alive.

The new technology is capable of identifying and quantifying different kinds of cyanobacteria, or blue-green algae, as a threat to shut down water systems when it suddenly proliferates. Pixabay

While the researchers acknowledge that implementing this process in conventional reverse osmosis systems is taxing, they propose a spiral-wound module system, similar to a roll of towels.
Also Read: India Gets Assistance of Rs 3,420 Crore From Japan
It could be equipped with LEDs or a type of nanogenerator that harnesses mechanical energy from the fluid flow to produce light and heat, which would reduce the overall cost.

If the technique were to be scaled up to a large size, it could benefit many developing countries where clean water is scarce, the researchers noted. (IANS)