Image

This Simple Filter Makes Seawater Safe To Drink

This Simple Filter Makes Seawater Safe To Drink
User Avatar
Updated 5 months ago

Over two billion people in the world don’t have access to safe, clean drinking water. This leads to a lack of proper hygiene, the spread of many diseases, and premature death of kids growing up in developing countries. In order to increase clean water reach, Australian scientists have developed a cheap graphene material that can effectively filter salt and dirt from water.

Graphene is a material that has numerous useful properties, one of them being an ability to repel water. At the same time, it can absorb salt and dirty materials in water, essentially creating a filter. What's the problem? It can be expensive to create the material, and can use a lot of energy.

Scientists at the Commonwealth Scientific and Industrial Research Organization (CSIRO) have developed a cheaper graphene material called “Graphair.” It retains the same properties as traditional graphene, but it’s made out of soybean oil. What's so important about this development? It's both less expensive and more eco-friendly.

In testing the material, researchers put a thin film layer on a commercial-grade water filter. It blocked out 99 percent of the contaminants from Sydney Harbor samples they tested on, even when the layer was dirty. Without the Graphair film, the same filter blocked material at half the rate over a 72-hour period. The end result was filthy water being safe and clean.

"This technology can create clean drinking water, regardless of how dirty it is, in a single step," Dr. Dong Han Seo, one of the scientists on the project, said in a news release. "All that's needed is heat, our graphene, a membrane filter and a small water pump. We're hoping to commence field trials in a developing world community next year.”

Should they be able to scale this product up, the technology could be used for water utility filtration and has the potential to treat industrial wastewater. On a smaller scale, it could be used to enhance household water filters.

Perhaps the best benefit is the potential for it to reach rural areas and developing countries. Since it’s cheap to make, it can provide clean water where it’s completely inaccessible, especially in the worst areas like sub-Saharan Africa and Southern and Eastern Asia. Over 800,000 children under the age of five die annually from diarrhea due to unclean water.

"Almost a third of the world's population, some 2.1 billion people, don't have clean and safe drinking water,” Seo said in the news release. "As a result, millions – mostly children – die from diseases associated with inadequate water supply, sanitation and hygiene every year. In Graphair we've found a perfect filter for water purification.”

RecircStyle7 Etsy Shops Full Of Cruelty-Free Skincare

These seven Etsy shops from around the world offer an impressive range of cruelty-free products you can feel good about putting on your face.

By Marissa Higgins
2 days ago
RecircNews72 Million New Homes Will Run On Solar Power By 2030

A new report shares why decentralized energy grids will power the homes of the future and make a major difference in the lives of those in developing countries currently with limited or zero access to electricity. 

By Koty Neelis
3 days ago
RecircNewsStarbucks And McDonalds Team Up To Create A Compostable To-Go Cup

Starbucks and McDonalds are working together to rethink to-go cups and inviting others to join them in creating eco-friendly packaging in an effort to reduce waste and environmental impact.

By Koty Neelis
3 days ago
RecircFoodMeat And Dairy Corporations Could Soon Beat Oil As World's Worst Polluters

A new report finds that meat and dairy producers are on track to surpass the oil industry's greenhouse gas emissions.

By Kristin Hunt
3 days ago
Stay Green
Sign up for our newsletter