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Researchers make breakthrough in fight against hidden hazard in water supply: 'These results are key'

"Could inspire new technologies."

Scientists discovered how wetland plants and fungi can help remove toxic PFAS from water, offering a clean, sustainable solution for safer water.

Photo Credit: iStock

Scientists discovered new helpful agents to battle forever chemicals: wetland plants and fungi. Nature's own systems are being harnessed to remove the toxic pollutants. The clean, sustainable solution offers safer water and healthier communities.

As American Chemical Society detailed, wetlands act as "kidneys," filtering and purifying water. The discovery was reported in a study published in Environmental Science & Technology.

Bo Hu, Feng Zhao, and their team investigated a plant-fungi duo: the moisture-loving yellow flag iris (Iris pseudoacorus L.) and arbuscular mycorrhizal fungi (AMF). The symbiotic relationship can remediate PFAS and "treat contaminated wastewater," per the report.

PFAS (per- and polyfluoroalkyl substances) are a group of human-made chemicals. They have been in everything for decades, from non-stick cookware to stain-resistant fabrics. Also known as "forever chemicals," PFAS are slow to break down. This allows them to accumulate in the environment and human bodies.

Their widespread presence increases human exposure. Drinking water, food, and consumer products could become contaminated. PFAS pose a significant public health risk. Exposure can lead to increased cholesterol, decreased vaccine response in children, and certain cancers.

According to ACS, researchers measured PFAS impact using "small, wetland-like systems" inside greenhouses. 

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They exposed yellow flag irises to PFAS-contaminated water. Findings show that plants exposed to PFAS have signs of stress and lower growth. When they introduced the fungus (Rhizophagus irregularis), plant growth improved.

The AMF-treated plants reached a successful ecological outcome. It first "removed 10-13% more of the individual PFAS" compounds per the report. At the same time, the pair boosted the breakdown of PFAS into smaller, less toxic compounds.

"Our study shows that a type of fungus (Rhizophagus irregularis) boosts wetlands' ability to remove PFAS and greatly reduces the environmental risks from 'forever chemicals' left in the outflowing water," said Bo Hu, per ACS. 

Hu further highlighted the green-tech potential of the discovery, stating, "These results are key for developing stronger wetland-based cleanup methods and could inspire new technologies for removing PFAS."

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Wetlands' natural ability to break down and remove PFAS is an environmental remediation.

The report noted that this solution could lead to more "constructed wetlands." The goal is to control PFAS removal with this "natural water treatment strategy." The plant-fungus combination offers a cost-effective and sustainable method for cleaning contaminated wastewater.

Cleaner water sources benefit communities by reducing human exposure to these hazardous chemicals. Safeguarding drinking water and similar water purification efforts can improve public health.

Further real-world tests with PFAS-contaminated wastewater are the next step. Conserving water sources and plants in this way will help develop a cleaner, safer future for all.    

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