Science
Related: About this forumMagnetic solution removes toxic "forever chemicals" from water in seconds
Scientists in Australia have developed an intriguing new technique for removing toxic forever chemicals from water. Adding a solution to contaminated water coats the pollutants and makes them magnetic, so they can easily be attracted and isolated.
Per- and polyfluoroalkyl substances (PFAS) are a group of chemicals that have been in wide use around the world since the 1950s, thanks to their water- and oil-repelling properties. However, more recently PFAS chemicals have been linked to a concerning number of health problems, including increased risks of diabetes and liver cancer. Worse still, a recent study has found that their levels in rainwater almost everywhere on Earth exceed the EPAs guidelines, and to cap it all off, these stable molecules are very hard to break down, earning them the nickname forever chemicals.
Now, researchers at the University of Queensland have developed a technique that could help remove PFAS chemicals from water. The team designed a solution called a magnetic fluorinated polymer sorbent which, when added to contaminated water, coats the PFAS molecules. This makes them magnetic, so then its a relatively simple process to use a magnet to attract the pollutants and separate them from the water.
In tests with small samples of PFAS-laden water, the team found that the technique could remove over 95% of most PFAS molecules, including over 99% of GenX a particularly problematic chemical within 30 seconds.
https://newatlas.com/environment/pfas-toxic-forever-chemicals-magnetic-removal/
1WorldHope
(878 posts)housecat
(3,138 posts)1WorldHope
(878 posts)SergeStorms
(19,312 posts)Just about every living creature on earth has these chemicals in their bodies already. The water and earth are contaminated with them, and there's no possible way to coat the entire earth and waterways with this new substance to remove them. Even if you could, what do you do with them after you've removed them?
It's a feel-good story, but totally impossible to implement.
I don't like being the bearer of bad tidings, but I try to be realistic.
BWdem4life
(2,457 posts)How exactly are you going to treat all the water in lakes, streams and rivers? How are you going to treat the rain?
FakeNoose
(35,493 posts)yonder
(10,002 posts)I wonder what would discourage adoption of this technique? Scale, power requirements, etc.?
Then again, can we afford not to further poison ourselves into oblivion?
KPN
(16,065 posts)for their own water supply within a matter of couple mere years. The rest of us? Well, water sources are as prolific as people so think Flint, Michigan.
LudwigPastorius
(10,683 posts)pansypoo53219
(21,683 posts)mjvpi
(1,565 posts)And after its collected on a magnet we can store it safely with nuclear waste, right? And the companies that made millions creating these chemicals in the first place are going to pay for the process, right?
Yes, this is wonderful news and limitless good karma and money to the brilliant scientists who developed this process. Hopefully we can manage to teach enough Critical Race Theory that this technology can be used first in predominantly poor communities of color that compose our "cancer alleys" and in poor countries where multinational corporations are more powerful than the governments.
Sorry, long day at work.
NickB79
(19,564 posts)Otherwise, yeah, it's kind of a non-scalable solution if it's a one-time use material.
mjvpi
(1,565 posts)ProfessorGAC
(69,643 posts)I'll have to look for the paper. I'm really interested in what the sorbent consists of.
I did a lot of this type of P-Chem in my time.
Intriguing.