| Title: | Co(2+)/PMS based sulfate-radical treatment for effective mineralization of spent ion exchange resin |
| Author(s): | Hafeez MA; Hong SJ; Jeon J; Lee J; Singh BK; Hyatt NC; Walling SA; Heo J; Um W; |
| Address: | "Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH) 77 Cheongam- ro, Nam-GU, Pohang, Gyeongbuk, 790-784, Republic of Korea. Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH) 77 Cheongam- ro, Nam-GU, Pohang, Gyeongbuk, 790-784, Republic of Korea; Nuclear Environmental Technology Institute (NETI), Pohang, Gyeongbuk, 37673, Republic of Korea. Immobilisation Science Laboratory, Department of Materials Science & Engineering, The University of Sheffield, Sheffield, S1 3JD, United Kingdom. Division of Advanced Nuclear Engineering (DANE), Pohang University of Science and Technology (POSTECH) 77 Cheongam- ro, Nam-GU, Pohang, Gyeongbuk, 790-784, Republic of Korea; Division of Environmental Science and Engineering (DESE), Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-Gu, Pohang, Gyeongbuk, 37673, Republic of Korea; Nuclear Environmental Technology Institute (NETI), Pohang, Gyeongbuk, 37673, Republic of Korea. Electronic address: wooyongum@postech.ac.kr" |
| DOI: | 10.1016/j.chemosphere.2021.132351 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "Sulfate radical advance oxidation processes (SR-AOPs) have attracted a greater attention as a suitable alternative of the hydroxyl radical based advance oxidation process (HR-AOPs). In this study, for the first time we report liquid phase mineralization of nuclear grade cationic IRN-77 resin in Co(2+)/peroxymonosulfate (PMS) based SR-AOPs. After the dissolution of cationic IRN-77 resin, 30 volatile and 15 semi-volatile organic compounds were analyzed/detected using non-targeted GC-MS analysis. The optimal reaction parameters for the highest chemical oxygen demand (COD) removal (%) of IRN-77 resin were determined, and the initial pH, PMS dosage, and reaction temperature were found to be the most influential parameters for the resin degradation. We successfully achieved approximately 90% COD removal (1000 mg/L; 1000 ppm) of dissolved spent resin for SR-AOPs by optimizing the reaction parameters as initial pH = 9, Co(2+) = 4 mM (catalyst), PMS = 60 mM (as oxidant) at 60 degrees C temperature for 60 min reaction. The electron spin resonance spectroscopy (ESR) spectra confirmed the presence of SO(4)(?O+-) and OH(?O+) as main reactive species in the Co(2+)/PMS resin system. In addition, Fourier transform infrared spectroscopy (FT-IR) analyses were used for structural characterization of solid and liquid phase resin samples. We believe that this work will offer a robust approach for the effective treatment of spent resin generated from nuclear industry" |
| Keywords: | "*Ion Exchange Resins Oxidation-Reduction *Peroxides Spectroscopy, Fourier Transform Infrared Sulfates Advance oxidation process Cobalt Mineralization Peroxymonosulfate Spent ion exchange resin Sulfate radical;" |
| Notes: | "MedlineHafeez, Muhammad Aamir Hong, Seok Ju Jeon, Junsung Lee, Juhyeok Singh, Bhupendra Kumar Hyatt, Neil C Walling, Samuel A Heo, Jong Um, Wooyong eng England 2021/10/01 Chemosphere. 2022 Jan; 287(Pt 4):132351. doi: 10.1016/j.chemosphere.2021.132351. Epub 2021 Sep 27" |
