Superior Removal of Vanadium(V) from Simulated Groundwater with a Fe-Based Metal–Organic Framework Immobilized on Cotton Fibers

Abstract

A suitable adsorbent is essential in the process of removing hazardous vanadium(V) from actual groundwater. In this work, MIL-88A(Fe)/ cotton (MC) was employed to eliminate V(V) from simulated vanadiumcontaminated groundwater. The findings demonstrated that MC exhibited an exceptional performance in removing V(V), displaying a maximum adsorption capacity of 218.71 mg g −1 . MC exhibits great promise as an adsorbent for V(V) elimination in an extensive pH range spanning 3 to 11. Even in the presence of high levels of competing ions such as Cl − , NO 3 − , and SO 4 2− , MC demonstrated remarkable specificity in adsorbing V(V). The results of column experiments and co-occurring ions influence tests indicate that MC is a potential candidate for effectively treating actual vanadium-contaminated groundwater. The effluent could meet the vanadium content restriction of 50 μg L −1 required in China's drinking water sources. Regeneration of MC can be performed easily without experiencing significant capacity loss. The results obtained from this research indicate the promising potential of MC in mitigating vanadium pollution.

A molecular extraction process for vanadium based on tandem selective complexation and precipitation

“…V(V) has been extracted from aqueous solutions using porous sorbents 7 – 9 , ionic liquids 10 , colloids 11 , 12 , nanoparticles/nanocomposites 13 – 16 , and modified composites 17 , 18 , with impressive capacities ranging from 240 to 712.4 mg g −1 . However, a comprehensive evaluation of material’s selectivity for V(V) in the presence of competing metal ions (Fe(III), Cr(III), Cu(II), Ni(II), Zn(II), etc.)…”