Investigation of the Segregation of Radiocesium from Contaminated Aqueous Waste Using AMP-PAN Extraction Chromatography

Taisir Khudhair Abbas, Thaeerh Tariq Abdulghafoor, Ali Hassan Aziz, Saad Al-Saadi (), Takrid Munam Nafae, Khalid Turki Rashid and Qusay F. Alsalhy ()
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Taisir Khudhair Abbas: Ministry of Science and Technology (MoST), AL-Tuwaitha Nuclear Site, Central Laboratories Directorate (CLD), Baghdad P.O. Box 2440, Iraq
Thaeerh Tariq Abdulghafoor: Ministry of Science and Technology (MoST), AL-Tuwaitha Nuclear Site, Central Laboratories Directorate (CLD), Baghdad P.O. Box 2440, Iraq
Ali Hassan Aziz: Ministry of Science and Technology (MoST), AL-Tuwaitha Nuclear Site, Central Laboratories Directorate (CLD), Baghdad P.O. Box 2440, Iraq
Saad Al-Saadi: Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia
Takrid Munam Nafae: Ministry of Science and Technology (MoST), AL-Tuwaitha Nuclear Site, Central Laboratories Directorate (CLD), Baghdad P.O. Box 2440, Iraq
Khalid Turki Rashid: Membrane Technology Research Unit, Chemical Engineering Department, University of Technology-Iraq, Alsinaa Street 52, Baghdad 10066, Iraq
Qusay F. Alsalhy: Membrane Technology Research Unit, Chemical Engineering Department, University of Technology-Iraq, Alsinaa Street 52, Baghdad 10066, Iraq

Energies, 2023, vol. 16, issue 18, 1-13

Abstract: Removing the hazardous and unstable radioactive isotopes has been considered an arduous task, though they are in minimal concentrations. Cesium-137 ( 137 Cs + ) is a primary fission product produced by nuclear processes. Even at low concentrations, such radioactive material is a menacing source of contaminants for the environment. The current study aims to separate 137 Cs + from a real contaminated aqueous solution via an ion exchange mechanism using ammonium molybdophosphate–polyacrylonitrile (AMP-PAN) resin loaded in an extraction chromatographic column that possesses considerable selectivity toward cesium ion (Cs + ) due to the specific ion exchange between 137 Cs + and NH 4+ . Additionally, the proposed interaction mechanism between 137 Cs + with APM-PAN resin has been illustrated in this study. The results disclosed that the optimum efficient removal of 137 Cs + (91.188%) was obtained by the AMP-PAN resin using 2 g·L −1 , while the distribution adsorption coefficient (129.359 mL·g −1 ) was at pH 6. The isothermal adsorption process was testified through the Langmuir and Freundlich models. The estimated maximum adsorption capacity reached 140.81 ± 21.3 mg·g −1 for the Freundlich isotherm adsorption model. Finally, AMP-PAN resin could eliminate 137 Cs + from water effectively through adsorption.

Keywords: radiocesium; extraction chromatography; AMP-PAN resin; hazardous element; liquid radioactive waste; adsorption; distribution adsorption coefficient (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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