Removal of trace DNA toxic compounds using a Poly(deep eutectic solvent)@Biomass based on multi-physical...

Area of Science:

• Environmental Chemistry
• Materials Science
• Green Chemistry

Background:

• DNA toxic compounds (DNA-T-Cs) pose significant health risks even at trace levels.
• Existing separation media struggle to efficiently remove low concentrations of DNA-T-Cs.
• Deep eutectic solvents (DESs) and biomass (BioM) offer unique functional properties for adsorption.

Purpose of the Study:

• To develop novel adsorbents for the efficient removal of trace DNA-T-Cs.
• To investigate the performance of Poly(DES)@BioMs in removing aromatic/hetero-atomic DNA-T-Cs.
• To understand the adsorption mechanisms and kinetics of DNA-T-C removal.

Main Methods:

• Synthesis of Poly(DES)@BioMs adsorbents by combining DESs and BioM.
• Optimization of experimental conditions including concentration, temperature, duration, and pH.
• Adsorption/desorption studies and kinetic/equilibrium modeling (Temkin, pseudo-second-order, Korsmeryer-Peppas, zero-order).
• Molecular simulations to elucidate removal interactions (hydrogen bonding, π-π stacking, hydrophobic/hydrophilic effects).

Main Results:

• Poly(DES)@BioMs demonstrated high removal efficiencies for DNA-T-Cs, ranging from 92.4% to 96.0% at 20.0 ppm.
• Adsorption followed Temkin equilibrium and second-order kinetic models, while desorption followed Korsmeryer-Peppas equilibrium and zero-order kinetic models.
• Effective removal of DNA-T-Cs was observed in industrial sewage (69.7%–102% at 8.0 ppm) and a methyl violet drug solution (95.4% at 20.0 ppm).

Conclusions:

• Poly(DES)@BioMs are highly effective adsorbents for removing trace DNA-T-Cs.
• The developed adsorbents show potential for practical applications in environmental remediation.
• Understanding the adsorption mechanisms provides insights for designing future adsorbent materials.