Scientists have figured out a way with which they can now destroy the harmful ‘forever chemicals, which were linked to many health hazards.
US scientists have found a simple and cost-efficient way to get rid of dangerous compounds that were previously thought to be nearly indestructible and pose a growing threat to human health and global pollution.
Due to their resistance to water, oil, and stains, they are quite useful. Numerous everyday things, such as makeup and culinary utensils, contain PFAS. However, it is because of these traits that they are so difficult to eradicate.
PFAS, also known as per- and polyfluoroalkyl substances, are synthetic compounds that have been used for decades in a variety of industrial and consumer goods. This includes nonstick cookware, waterproof textiles, and firefighting foams. Due to their chemical stability, they can build up in the environment. They pose a risk to both human and animal health. This is why they are known as ‘forever chemicals’.
Elimination methods have not been very successful for these forever chemicals
They have been discovered in rainwater all around the world at low percentages, but if they get into water or soil at high concentrations, they might be quite dangerous. Because they require exorbitantly high temperatures, existing PFAS elimination methods like cremation have not been very successful.
Two of the most significant groups of PFAS have been broken down into harmless molecules by chemists from Northwestern University in Illinois and the University of California, Los Angeles. On Thursday, 18 August, the discovery was reported in the journal Science.
“They have become a major societal problem”
William Ditchel, the project leader at Northwestern, said, “PFAS has become a major societal problem. Just a tiny amount of PFAs causes negative health effects and it does not break down. We can’t just wait out this problem.”
“We wanted to use Chemistry to use a solution that everyone in the world can use. It is exciting because of how unrecognized and simple our solution is,” he continued.
The procedure, which the researchers call a breakthrough, involves heating PFAS to approximately 100C with sodium hydroxide in a typical solvent called dimethyl sulfoxide. This triggers a chain of processes that breaks the chemical links between the carbon and fluorine atoms that otherwise make PFAS so stable. The end products are fluoride ions and tiny, safe chemical compounds.
However, the solution involves more than merely treating locations with high PFAS concentrations. Fish and other species can continue to accumulate PFAS at low levels as long as they are created since it is difficult for them to be organically broken down.
