'Miracle Tree' Leaves Remove 98% of Microplastics in Water

Tuổi Trẻ reports on a groundbreaking scientific discovery that could revolutionize water purification: the humble Moringa oleifera tree, often called the "miracle tree," possesses the remarkable ability to remove nearly all microplastics from water. This finding, stemming from research at São Paulo State University in Brazil, positions the drumstick tree's extract as a potent and environmentally friendly alternative to conventional chemical treatments for microplastic contamination.

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The leaves of the Moringa oleifera tree – Photo: treedom.net A recent study found that Moringa oleifera leaves are as effective as, or even superior to, chemicals in filtering PVC microplastics, one of the most harmful plastics to human health.

The study, published in ACS Omega, compared the efficacy of alum (a common coagulant) with Moringa extract. Both methods work by neutralizing the negative charges on microplastic particles, causing them to aggregate into larger clumps, or "flocs," which can then be effectively filtered out. The research demonstrated that Moringa extract achieved a removal rate of over 98% for PVC microplastics, some as small as 15 micrometres—particles often small enough to evade standard filters and pose significant health risks.

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This discovery could open the way for more environmentally friendly water treatment solutions.

This discovery is particularly significant given the global proliferation of microplastics in water systems, originating from sources like tire wear, paints, textiles, and plastic packaging. While the EU has tightened its monitoring of microplastics in drinking water, concerns remain about the effectiveness of current filtration methods. The traditional use of Moringa for water purification, dating back to ancient Egypt for removing bacteria and turbidity, is now being validated by modern science. The tree's rapid growth, drought resistance, and low water needs make it an ideal candidate for sustainable water treatment solutions, especially in regions grappling with both water scarcity and pollution. This "miracle tree" offers a beacon of hope for cleaner water, aligning with Vietnam's growing focus on environmental sustainability.

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Microplastic particles released from car tires, paint, textiles, and degraded plastic packaging have accumulated in global water systems for decades, leading to increasing potential health risks.