Wednesday, April 21, 2021
Home Life Style Health & Fitness New Technology That Can Clean Water Twice As of Now

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.

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.

Water
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)

[Image credits: Total Shape]

STAY CONNECTED

19,507FansLike
362FollowersFollow
1,773FollowersFollow

Most Popular

India To Be Transformed By Next Decade Due To Cloud, AI And Data

Although there is an acceleration in tech adoption and innovation across sectors in India, the key challenge now is to scale new-age technologies like...

RT-PCR Test Can Detect New Covid-19 Strain

Umesh Singh of Lucknow, who runs a pharmaceutical company, had symptoms of coronavirus four days ago when he got his Reverse transcription-polymerase chain reaction...

Scientists Are Finding More Evidence In Favor Of CBD For Dogs

BY- Anna Dawson  Studies released in 2021 continue to show the benefits of CBD supplementation in dogs. Our four-legged friends provide us with some of...

A Vaccine To Prevent Opioid Addiction Underway

The time spent alone and in isolation during the ongoing coronavirus pandemic led to an increase in opioid overdoses. Now scientists are planning for...

54% Of Indian Students Comfortable With Online Learning

Nearly 54 percent of students in India now feel comfortable with the online learning model, according to a survey by Brainly, an online learning...

Get Your Home Ready For A Summer Stay Cation With These Budget Ideas

Now that we're halfway through April, the temperature is gradually starting to rise. Soon, we'll all be seeking asylum from the scorching heat, and...

Useful Skincare Tips For Summer

Your skin starts to show signs like clogged pores, acne, tan, and greasiness in summer. We can't blame it on the sun, but we...

A Whale Chorus Shows How Climate Change Could Affect Migration

Eerie wails, explosive trumpets, and ghostly moans. The sounds from the underwater recorders had a story to tell, even without a single intelligible word:...

Recent Comments