Removal and Recovery of Some From Simulated Nuclear Waste Radionuclides Using Amberlite XAD-16-Pyridylazo Resorcinol (AXAD-PR) Composite

International Physics Conference at the Anatolian Peak 2016

Akçalar, Sevil^1

Dokuz Eylül University, Engineering Faculty, Mechanical Engineering Department, Kaynaklar Campus, Buca-Izmir, Turkey^1

关键词: Acid solutions;    Adsorption and desorptions;    Adsorption kinetics;    Amberlite XAD-16;    Desorption efficiency;    Laboratory conditions;    Neutral conditions;    Removal and recoveries;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/707/1/012030/pdf
DOI  :  10.1088/1742-6596/707/1/012030

来源: IOP

【 摘 要 】

In this study, Amberlite XAD-16-Pyridylazo resorcinol composite (AXAD-PR) were developed under laboratory conditions to detect the removals and recoveries of U(IV) and Am(III) from simulated nuclear wastes by adsorption and desorption processes. The effects of contacting time (5, 15, 25 and 200 min), of AXAD-PR concentrations (5, 25, 50 and 100 mg/l), of temperatures (15, 30 and 45°C), increasing U(IV) and Am(III) concentrations (1, 5, 10, 15, 20, 30 and 40) and pH levels (acidic, basic and neutral conditions) on the removals and recoveries of U(IV) and Am(III) radionuclides were investigated. The data obtained showed that the maximum adsorption yields of U(IV) and Am(III) were found to be 96% and 95%, respectively, after 25 min using 25 mg/l AXAD-PR at 30°C at an acidic pH of 5. The adsorption kinetic of radionuclides to AXAD-PR isotherm was in accordance with Langmuir. The AXAD-PR can be reused and can be used again. The regeneration of the composite is possible and can be attained a desorption efficiency of 99% using 0.4 M HNO3acid solution from 25 mg/l prepared AXAD-PR.