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Frontiers in Energy

Front. Energy    2020, Vol. 14 Issue (1) : 11-17
An adsorption study of 99Tc using nanoscale zero-valent iron supported on D001 resin
Lingxiao FU1, Jianhua ZU1(), Linfeng HE2, Enxi GU1, Huan WANG1
1. School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2. Shanghai Institute of Measurement and Testing Technology, Shanghai 201203, China
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Nanoscale zero-valent iron (nZVI) supported on D001 resin (D001-nZVI) was synthesized for adsorption of high solubility and mobility radionuclide 99Tc. Re(VII), a chemical substitute for 99Tc, was utilized in batch experiments to investigate the feasibility and adsorption mechanism toward Tc(VII). Factors (pH, resin dose) affecting Re(VII) adsorption were studied. The high adsorption efficiency of Re(VII) at pH= 3 and the solid-liquid ratio of 20 g/L. X-ray diffraction patterns revealed the reduction of ReO4 into ReO2 immobilized in D001-nZVI. Based on the optimum conditions of Re(VII) adsorption, the removal experiments of Tc(VII) were conducted where the adsorption efficiency of Tc(VII) can reach 94%. Column experiments showed that the Thomas model gave a good fit to the adsorption process of Re(VII) and the maximum dynamic adsorption capacity was 0.2910 mg/g.

Keywords technetium      nanoscale zero-valent iron (nZVI)      D001 resin      adsorption     
Corresponding Author(s): Jianhua ZU   
Online First Date: 01 July 2019    Issue Date: 16 March 2020
 Cite this article:   
Lingxiao FU,Jianhua ZU,Linfeng HE, et al. An adsorption study of 99Tc using nanoscale zero-valent iron supported on D001 resin[J]. Front. Energy, 2020, 14(1): 11-17.
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Lingxiao FU
Jianhua ZU
Linfeng HE
Enxi GU
Fig.1  Schematic illustration of the liquid reduction method by NaBH4
Fig.2  SEM images of D001 resin and D001-nZVI
Fig.3  Fe element distribution of D001-nZVI
Fig.4  XRD pattern of D001-nZVI and Re(VII)-loaded D001-nZVI
Fig.5  Effect of pH on removal of Re(VII)
Fig.6  Effect of resin dose on removal of Re(VII)
Fig.7  Fit curve of pseudo-first-order kinetic model for adsorption of Re(VII)
Fig.8  Fit curve of pseudo-second-order kinetic model for adsorption of Re(VII)
Pseudo-first-order Pseudo-second-order
k1/(min-1) R2 k2/(g?mg-1?min-1) R2
0.00461 0.9740 0.012 0.9968
Tab.1  Parameters of kinetic models for adsorption of Re(VII)
Fig.9  Removal efficiency of Tc(VII) on D001-nZVIat different pH values (Initial activity of TcO4: 370 Bq/mL, resin amount: 10 g/L)
Fig.10  Removal efficiency of Tc(VII) on D001-nZVI at different resin doses (Initial activity of TcO4: 370 Bq/mL, initial pH: 3)
Fig.11  Breakthrough curve for adsorption of Re(VII)
Fig.12  Thomas model for continuous adsorption of Re(VII)
Metal ion Regression equation kT/(mL?min−1?mg−1) q0/(mg?g−1) R2
Re(VII) ln?( C0C e1)=1.31813.933V 0.4170 0.2910 0.991
Tab.2  Thomas model equation and parameters for adsorption of Re(VII)
1 L S Chen, T H Wang, Y K Hsieh, L W Jian, W H Chen, T L Tsai, C F Wang. Accurate technetium-99 determination using the combination of TEVA resin pretreatment and ICP-MS measurement and its influence on the Tc-99/Cs-137 scaling factor calculation. Journal of Radio Analytical and Nuclear Chemistry, 2014, 299(3): 1883–1889
2 L Zhu, D Sheng, C Xu, X Dai, M A Silver, J Li, P Li, Y Wang, Y Wang, L Chen, C Xiao, J Chen, R Zhou, C Zhang, O K Farha, Z Chai, T E Albrecht-Schmitt, S Wang. Identifying the recognition site for selective trapping of T cO4− 99. Journal of the American Chemical Society, 2017, 139(42): 14873–14876
3 G W Gee, M Oostrom, M D Freshley, M L Rockhold, J M Zachara. Hanford site vadose zone studies: an overview. Vadose Zone Journal, 2007, 6(4): 899–905
4 L Liang, B Gu, X Yin. Removal of technetium-99 from contaminated groundwater with sorbents and reductive materials. Separations Technology, 1996, 6(2): 111–122
5 J P Icenhower, N P Qafoku, W J Martin, et al. The geochemistry of technetium: a summary of the behavior of an artificial element in the natural environment. Report PNNL-18139. Richland, Washington, USA: Pacific Northwest National Laboratory, 2008
6 J A Rard, M H Rand, G Anderegg, et al. Chemical Thermodynamics of Technetium. Amsterdam: Elsevier, 1999
7 B A Lenell, Y Arai. Perrhenate sorption kinetics in zerovalent iron in high pH and nitrate media. Journal of Hazardous Materials, 2017, 321: 335–343
8 T Tosco, M Petrangeli Papini, C Cruz Viggi, R Sethi. Nanoscale zerovalent iron particles for groundwater remediation: a review. Journal of Cleaner Production, 2014, 77: 10–21
9 G Sheng, Y Tang, W Linghu, L Wang, J Li, H Li, X Wang, Y Huang. Enhanced immobilization of ReO4− by nanoscale zerovalent iron supported on layered double hydroxide via an advanced XAFS approach: implications for TcO4− sequestration. Applied Catalysis B: Environmental, 2016, 192: 268–276
10 J Li, C Chen, R Zhang, X Wang. Reductive immobilization of Re (VII) by graphene modified nanoscale zero-valent iron particles using a plasma technique. Science China Chemistry, 2016, 59(1): 150–158
11 H F Liu, T W Qian, D Y Zhao. Reductive immobilization of perrhenate in soil and groundwater using starch-stabilized ZVI nanoparticles. Chinese Science Bulletin, 2013, 58(2): 275–281
12 Q Ding, T Qian, F Yang, H Liu, L Wang, D Zhao, M Zhang. Kinetics of reductive immobilization of rhenium in soil and groundwater using zero valent iron nanoparticles. Environmental Engineering Science, 2013, 30(12): 713–718
13 I H Yoon, S Bang, J S Chang, M Gyu Kim, K W Kim. Effects of pH and dissolved oxygen on Cr(VI) removal in Fe(0)/H2O systems. Journal of Hazardous Materials, 2011, 186(1): 855–862
14 C Xiong, C Yao, L Wang, J Ke. Adsorption behavior of Cd(II) from aqueous solutions onto gel-type weak acid resin. Hydrometallurgy, 2009, 98(3–4): 318–324
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