Poly[4‐(4‐vinylbenzyloxy)‐2‐hydroxylbenzaldehyde] for rapid removal of low concentrations of Pb(II)

Abstract

Poly[4-(4-vinylbenzyloxy)-2-hydroxylbenzaldehyde] was evaluated for removing low concentrations of lead(II) in ppb levels from aqueous media. The effects of the pH condition and the initial lead concentrations on removal were examined. It was found that the metal absorption is best described with the Langmuir model. The R L values obtained between 0.01 and 0.23 indicate that favorable absorption occurs in the studied concentration ranges. The kinetic study revealed that the metal removal proceeds at a very fast pace-less than 30 s-to reach the maximum capacity. The data fit the description of pseudo-second-order rate. The dynamic column study for real-time practical absorption also was investigated. V

Preparation and adsorption behaviors of ethylene diamine tetraacetic acid modified zwitterionic hybrid materials

“…In our previous study, we found that the surface area of the samples had little impact on the adsorption of heavy‐metal ions on the hybrid materials containing ionic groups. Similar results were also seen in other studies . To further confirm the influence of the pore size and to examine the surface morphology of the previously prepared zwitterionic hybrid materials, the surface FESEM image of samples A–D were observed and are presented in Figure .…”

“…Similar results were also seen in other studies. 20,21 To further confirm the influence of the pore size and to examine the surface morphology of the previously prepared zwitterionic hybrid materials, the surface FESEM image of samples A-D were observed and are presented in Figure 4.…”