Removal of V(V) From Solution Using a Silica-Supported Primary Amine Resin: Batch Studies, Experimental Analysis, and Mathematical Modeling

Abstract

Every year, a large quantity of vanadium-containing wastewater is discharged from industrial factories, resulting in severe environmental problems. In particular, V(V) is recognized as a potentially hazardous contaminant due to its high mobility and toxicity, and it has received considerable attention. In this study, a silica-supported primary amine resin (SiPAR) was prepared by in-situ polymerization, and the V(V) adsorption from the solution was examined. The as-prepared resin exhibited fast adsorption kinetics, and it could attain an equilibrium within 90 min for the V(V) solution concentration of 100 mg/L at an optimum pH of 4, whereas the commercial D302 resin required a treatment time of more than 3 h under the same conditions. Furthermore, the maximum adsorption capacity of the resin under optimum conditions for V(V) was calculated to be 70.57 mg/g. In addition, the kinetics and isotherm data were satisfactorily elucidated with the pseudo-second-order kinetics and Redlich–Peterson models, respectively. The silica-based resin exhibited an excellent selectivity for V(V), and the removal efficiency exceeded 97% in the presence of competitive anions at 100 mmol/L concentrations. The film mass-transfer coefficient (kf) and V(V) pore diffusivity (Dp) onto the resins were estimated by mathematical modeling. In summary, this study provided a potential adsorbent for the efficient removal of V(V) from wastewater.

Towards Bioleaching of a Vanadium Containing Magnetite for Metal Recovery

“…A study in China identified vanadium in soils and groundwater where species from the Bacillus and Thauera genera were well represented, resulting in reduction of V 5+ to less toxic V 4+ suggesting a path to bioremediation with these species ( Zhang et al, 2019 ). Vanadium can also be recovered by chemical and biological sorbents for both remediation and industrial vanadium recovery ( Huang et al, 2020 ; Kong et al, 2020 ; Zhang and Leiviskä, 2020 ; Sharififard and Rezvanpanah, 2021 ). However, the paucity of microbiological studies highlights the gap in current knowledge of vanadium-contaminated environments.…”