Modeling of kinetics of pertechnetate removal by amino-functionalized glycidyl methacrylate copolymer

• Published in: Polymer bulletin (Berlin, Germany) Vol. 68; no. 2; pp. 507 - 528
• Main Authors: Maksin, Danijela D., Hercigonja, Radmila V., Lazarević, Magdalena Ž., Žunić, Marija J., Nastasović, Aleksandra B.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 2012; Springer; Springer Nature B.V
• Subjects: Applied sciences; Aqueous solutions; Bioaccumulation; Carbon; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Complex Fluids and Microfluidics; Copolymers; Diethylene triamine; Ethanol; Ethylene glycol; Exact sciences and technology; Experiments; Glycol dimethacrylates; Kinetics; Miscellaneous; Organic Chemistry; Organic polymers; Original Paper; Physical Chemistry; Physicochemistry of polymers; Pollutants; Polymer Sciences; Porosity; Precious metals; Properties and characterization; Soft and Granular Matter; Sorption; Technetium; Technetium isotopes; Macroporous copolymer; Sorption kinetics; Pertechnetate; Amino-functionalized; Crosslinked copolymer; Kinetic model; Glycidyl methacrylate copolymer; Binding capacity; Pertechnetates; Chelating agent; Kinetics; Methacrylate copolymer; Experimental study; Amine copolymer
• ISSN: 0170-0839; 1436-2449
• DOI: 10.1007/s00289-011-0634-5

Technetium-99 comprises a significant health risk, since edible plants can bioaccumulate and convert it to more lipophilic species that cannot be excreted through urine. Batch kinetics of pertechnetate removal from aqueous solutions by two samples of crosslinked poly(glycidyl methacrylate- co -ethylene glycol dimethacrylate) functionalized with diethylene triamine (PGME-deta) was investigated at the optimum pH value of 3.0, and the initial solution activity of 325 MBq dm −3 . PGME-deta was characterized by elemental analysis, mercury intrusion porosimetry, and scanning electron microscopy. Five kinetic models (pseudo-first, pseudo-second order, Elovich, Bangham, and intraparticle diffusion) were used to determine the best-fit equation for pertechnetate sorption. After 24 h, PGME-deta samples sorbed more than 98% of pertechnetate present, with maximum sorption capacity of 25.5 MBq g −1 , showing good potential for remediation of slightly contaminated groundwater.