The Study of Amidoxime-Functionalized Cellulose Separate Th(IV) from Aqueous Solution

Area of Science:

• Environmental Chemistry
• Materials Science
• Adsorption Technology

Background:

• Selective thorium (Th(IV)) extraction from wastewater is critical.
• Developing efficient and selective adsorbents is a key research area.

Purpose of the Study:

• To synthesize and characterize amidoxime cellulose (AO-CELL) for Th(IV) removal.
• To evaluate the adsorption performance, selectivity, and reusability of AO-CELL for Th(IV).

Main Methods:

• Synthesis of amidoxime cellulose.
• Characterization using FT-IR, SEM, XPS, and elemental analysis.
• Adsorption experiments to determine capacity, selectivity, and reusability.

Main Results:

• AO-CELL exhibited over 80% Th(IV) adsorption at optimal conditions (0.12 g/L, pH 3.5).
• Maximum adsorption capacity reached 450 mg/g.
• High selectivity for Th(IV) over other metal ions and 95% desorption efficiency in 0.06 mol/L nitric acid.

Conclusions:

• Synthesized AO-CELL shows excellent selective adsorption for low-concentration Th(IV).
• The material demonstrates good desorption and reusability over four cycles.
• AO-CELL holds significant practical value for wastewater treatment.