Effective triclosan removal by using porous aromatic frameworks in continuous fixed-bed column studies

Area of Science:

• Environmental Chemistry
• Materials Science
• Adsorption Science

Background:

• Triclosan (TCS) is an emerging contaminant in aquatic environments.
• Efficient removal of TCS is crucial for water safety and ecological health.

Purpose of the Study:

• To synthesize and characterize a novel adsorbent, NPVMo@iPAF-1, for triclosan removal.
• To evaluate the adsorption performance and regeneration capabilities of NPVMo@iPAF-1 in fixed-bed columns.

Main Methods:

• NPVMo@iPAF-1 synthesized by incorporating (NH4)5H6PV8Mo4O40 into porous aromatic frameworks (PAF).
• Adsorption capacity determined using the Langmuir model.
• Fixed-bed column experiments conducted to assess TCS removal efficiency.
• Regeneration studies performed using in-situ ozonation.

Main Results:

• NPVMo@iPAF-1 exhibits a high specific surface area (665 m²/g).
• Maximum adsorption capacity reached 917.1 mg/g (Langmuir model).
• Fixed-bed column data correlated well with Thomas and Yoon-Nelson models.
• Effective regeneration achieved for over 10 cycles via ozonation.

Conclusions:

• NPVMo@iPAF-1 demonstrates excellent potential for TCS removal from various water sources.
• Pore preservation, electrostatic effects, and π-π interactions contribute to adsorption efficiency.
• The adsorbent offers a cost-effective and sustainable solution for water remediation.