A new tannin-based adsorbent synthesized for rapid and selective recovery of palladium and gold: Optimization using central composite design.

ABSTRACT: A tannin-based adsorbent was synthesized by pomegranate peel tannin powder modified with ethylenediamine (PT-ED) for the rapid and selective recovery of palladium and gold. To characterize PT-ED, field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS-Mapping), and Fourier transform infrared spectroscopy (FT-IR) were used. Central composite design (CCD) was used for optimization. The kinetic, isotherm, interference of coexisting metal ions, and thermodynamics were studied. The optimal conditions, including Au (III) concentration = 30 mgL-1, Pd (II) concentration = 30 mgL-1, adsorbent mass = 26 mg, pH = 2, and time = 26 min with the sorption percent more than 99 %, were anticipated for both metals using CCD. Freundlich model and pseudo-second-order ex

SUBMITTER: Zandi-Darehgharibi F 

PROVIDER: S-EPMC10837505 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature