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Bioadsorptive removal of pollutants and emerging metallic pollutants from surface water using sustainable plant-based materials.

Raghavendra HN, Niranjan, Raghavendra Prajwal HS, Sanjeev TP, Yadav A

Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering10 March 2026
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Raghavendra HN, Niranjan, Raghavendra Prajwal HS et al. (2026). Bioadsorptive removal of pollutants and emerging metallic pollutants from surface water using sustainable plant-based materials.. Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering.

This environmental study tested whether powdered seeds from the Moringa oleifera tree could clean polluted water from two lakes in India. Researchers collected water samples during October-November 2024 and tested how well moringa seed powder could remove various pollutants compared to onion seed powder. They measured things like water cloudiness, color, acidity, and heavy metal contamination before and after treatment. The study found that moringa seed powder could remove 50-70% of many pollutants when used at 5-6% concentration for 25-45 minutes. While onion powder performed better for heavy metals like copper and zinc, moringa still showed significant water cleaning abilities. The researchers believe this works because moringa seeds contain proteins and other compounds that can grab onto and remove pollutants from water. This research is important because it shows moringa could be used as a natural, eco-friendly alternative to chemical water treatments, especially in rural areas where clean water is scarce. The study suggests moringa seed powder could be a low-cost, sustainable solution for communities dealing with water pollution problems.

Study details

Population

Surface water samples from two lakes in Karnataka

Plant part

Seed

Preparation

Powder

Dosage

5-6% dosage with 25-45 minute contact time

Country

India

Dosage protocol

5-6% seed powder dosage with 25-45 minute contact time for optimal water treatment efficiency

Key compounds

cationic proteinsflavonoids

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