Per- and Polyfluoroalkyl Substances (PFAS)
Context:
Researchers from Tongji University and South China Agricultural University published a perspective outlining a comprehensive approach to PFAS remediation.
More on news
- PFAS persistence in the environment has caused widespread contamination and raised serious health concerns, including links to cancer and immune system disorders.
- The study introduces four cutting-edge technologies: hydrothermal alkali treatment (HALT), low-temperature mineralization, mechanochemical degradation, and adsorption technologies.
- These methods have shown high effectiveness in breaking down PFAS compounds and underscore the need for global collaboration and investment to tackle the significant environmental and health risks posed by PFAS.
About PFAS:
- Per- and polyfluoroalkyl substances (PFAS), often referred to as “forever chemicals,” are a large group of synthetic chemicals that have been widely used for decades.
- PFAS are incredibly stable due to their strong carbon-fluorine bonds.
- This stability makes them resistant to degradation, allowing them to persist in the environment for a very long time.
- As a result, they can accumulate in water, soil, and living organisms.
- Their unique properties, such as resistance to heat, oil, stains, and water, have made them valuable in various industries.
- However, their persistence in the environment and potential health risks have raised significant concerns.
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Stockholm Convention The Stockholm Convention on Persistent Organic Pollutants (POPs) is a global treaty aimed at protecting human health and the environment from hazardous chemicals. It was established in 2001 and has since included several substances under its regulations.
India ratified the Stockholm Convention in 2006 under Article 25(4), which allowed the country to maintain a default “opt-out” stance. This means that any amendments to the convention’s Annexes cannot be applied to India unless the country explicitly deposits an instrument of ratification, acceptance, approval, or accession with the UN depositary. |
Common uses of PFAS:
- Consumer products: Non-stick cookware, stain-resistant clothing, carpets, and waterproof fabrics.
- Industrial applications: Firefighting foams, electronics, and coatings.
- Food packaging: To prevent grease and oil from seeping through.
Concerns:
- Health Concerns: Liver damage, Kidney issues, Reproductive and developmental effects, Cancer.
- Environmental impacts: Water contamination, Bioaccumulation.
