Investigating the efficiency of bisphenol-A diglycidyl ether/resole phenol formaldehyde/polyamine blends as Cerium adsorbent from aqueous solution

Abstract

The blending process of epoxy resin types of bisphenol-A diglycidyl ether (DGEBPA) with resole phenol-formaldehyde (RPF) and polyamine (PA) materials is investigated for Cerium (Ce+3) desorption. Two different blend weight ratios of EPR2 (DGEBPA/PA/RPF; 2:1:1) and EPR3 (DGEBPA/PA/RPF; 2:1:3) are used for the evaluation and compared with the epoxy blank sample EPR1 (DGEBPA/PA; 2:1), under the same preparation conditions of the thermal curing reaction for 1 h at 80 °C. SEM/EDX, XRF, and FTIR are used to illustrate the obtained sorbents. Since cerium is utilized in many industries, this research examines the prospect of extracting it from aqueous solutions that include it using sorbent materials that are affordable, simple to use, and easy to apply. Balance equilibrium is determined by; 40 ppm, solid-to-liquid ratio: 0.1:10 g/mL, room temperature, time: 4 h, and pH 4. Cerium is extracted almost completely without significant solution changes in the chemical composition. Sorption isotherm models are used to analyze the investigative findings. Kinetic, isotherms, and thermodynamics analysis for the obtained data have been performed followed by Langmuir models and pseudo-second-order. The adsorption capacity of Cerium is obtained near; 1.8, 3.9, and 11.7 mg/g for EPR1, EPR2, and EPR3, respectively. The detected results of Ce+3 adsorption; EPR3 is the most effective Cerium adsorbent from solutions and for application on real samples from Nuclear Materials Authority.