meta_pixel
Tapesearch Logo
Log in
Science Quickly

Microbots Get the Lead Out--of Wastewater

Science Quickly

Scientific American

Science

4.2639 Ratings

🗓️ 18 April 2016

⏱️ 2 minutes

🧾️ Download transcript

Summary

Millions of tiny graphene robots can propel themselves through wastewater and scavenge heavy metals. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

Click on a timestamp to play from that location

0:00.0

Understanding the human body is a team effort. That's where the Yachtel group comes in.

0:05.8

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years.

0:11.0

Yacold also partners with nature portfolio to advance gut microbiome science through the global grants for gut health, an investigator-led research program.

0:19.6

To learn more about Yachtolt, visit yawcult.co.

0:22.7

J-P. That's Y-A-K-U-L-T dot CO.J-P. When it comes to a guide for your gut, count on Yacolt.

0:33.6

This is Scientific American's 60-second science.'m Christopher in Taliatta. Got a minute?

0:39.6

Water laced with heavy metals, like the drinking water in Flint, Michigan, can be stripped

0:44.2

of contaminants using chemicals, filters, membranes, even electric current. But now researchers say they've

0:50.5

created what could be a cheaper, more effective solution, a fleet of microscopic,

0:55.0

self-propelled aquatic robots, each one the size of just 10 lined-up bacteria, so tiny that

1:01.6

a billion will fit in a syringe. Each tube-shaped microbot is a sandwich of three materials,

1:07.3

a graphene outer layer, which binds to heavy metals, a middle layer of nickel, which gives

1:12.1

the bots magnetic polarity so they can be pulled through wastewater with magnets, and a platinum

1:16.9

inside for propulsion.

1:18.9

Just add a bit of peroxide to the wastewater, and it'll react with the platinum to form water

1:23.1

and oxygen bubbles, which propel the tubes along.

1:26.6

In an hour, a swarm of 200,000 bots scavenged 80% of the lead from 3 milliliters of tainted water,

1:33.3

and the researchers estimate that it costs only about 5 cents a liter to do so.

1:37.5

The findings are in the journal Nanoletters.

1:40.5

The researchers envision the bots as a portable solution for small companies.

1:44.6

They'd treat their water on site instead of carting it to a treatment plan.

1:48.9

And after the robots do the rounds, the heavy metals can be stripped away,

...

Please login to see the full transcript.

Disclaimer: The podcast and artwork embedded on this page are from Scientific American, and are the property of its owner and not affiliated with or endorsed by Tapesearch.

Generated transcripts are the property of Scientific American and are distributed freely under the Fair Use doctrine. Transcripts generated by Tapesearch are not guaranteed to be accurate.

Copyright © Tapesearch 2025.