Graphical Abstract

Project Overview

Access to clean drinking water remains a global challenge, particularly due to arsenic contamination in groundwater. Inspired by the iron plaque formation mechanism in rice roots, this project investigates a biomimetic approach to remove arsenic using iron-modified nanoclinoptilolite (Fe-nCLN). The iron modification enhances the surface properties of natural zeolite, increasing its adsorption efficiency for arsenic ions. Through surface characterization (DLS, XRD, BET, EDS, and zeta potential), the modified nanozeolite was optimized to mimic natural processes of arsenic immobilization, providing a cost-effective and sustainable solution for water purification in arsenic-affected regions.

Major Outcomes

• Biomimetic Inspiration: Successfully applied the iron plaque formation mechanism of rice roots to design an eco-friendly adsorbent.
• Enhanced Performance: Iron-modified nanoclinoptilolite achieved a 25% higher arsenic removal efficiency than unmodified samples.
• Structural Optimization: Characterization confirmed increased surface area (42.25 m²/g), positive surface charge shift, and improved porosity.
• Efficient Adsorption: Complete arsenic removal achieved for concentrations below 100 µg/L with an adsorbent dose of 25 g/L.
• Scalable Application: Demonstrated potential for real-world implementation in low-cost water purification systems.

Paper Source

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