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Maree RM, Kotb NA, Abass MR. Efficient uptake of 85Sr and 60Co using fabricated inorganic sorbent for reducing radiation doses of simulated low-level waste. Appl Radiat Isot 2024; 208:111264. [PMID: 38531244 DOI: 10.1016/j.apradiso.2024.111264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 02/24/2024] [Accepted: 02/27/2024] [Indexed: 03/28/2024]
Abstract
The present study investigated the sorption behavior of 85Sr and 60Co radionuclides from aqueous solutions onto tin molybdate (SnMo) sorbent. SnMo has been synthesized using the precipitation method and was characterized using four analytical techniques including FT-IR, XRD, SEM, and XRF. The sorption studies applied on 85Sr and 60Co include the effect of shaking time, pH, concentration, and saturation capacity. The experimental data revealed that the sorption process was carried out after equilibrium time (180 min). The saturation capacity for 85Sr and 60Co is measured to be 58.1 and 52.2 mg g-1, respectively. The sorption behavior of studied radionuclides is dependent on pH values. Sorption kinetic better fit with the pseudo-second-order model. Furthermore, the sorption isotherm is better represented by the model proposed by Langmuir. The results of the desorption investigations indicated that the most effective eluents for achieving full recovery of investigated radionuclides were identified. Finally, the recycling results demonstrate the suitability of SnMo for affected sorbing of 85Sr and 60Co from aqueous solutions. All the obtained data clarify that the SnMo sorbent is an effective means of removing 85Sr and 60Co from liquid waste.
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Affiliation(s)
- R M Maree
- Radiation Protection & Safety Department, Hot Laboratories Centre, Egyptian Atomic Energy Authority, Egypt
| | - N A Kotb
- Radiation Protection & Safety Department, Hot Laboratories Centre, Egyptian Atomic Energy Authority, Egypt
| | - M R Abass
- Nuclear Fuel Technology Department, Hot Laboratories and Waste Management Center, Egyptian Atomic Energy Authority, Cairo, Egypt.
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Ghaly M, Abass MR, Mekawy ZA. Performance of molybdenum vanadate loaded on bentonite for retention of cesium-134 from aqueous solutions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:60432-60446. [PMID: 37022555 PMCID: PMC10163132 DOI: 10.1007/s11356-023-26607-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 03/18/2023] [Indexed: 05/08/2023]
Abstract
This article studied the sorption behavior of Cs(I) ions from aqueous solutions onto molybdenum vanadate@bentonite (MoV@bentonite) composite. MoV@bentonite has been fabricated using the precipitation method and was characterized by different analytical tools including, FT-IR, XRD, and SEM attached with an EDX unit. The sorption studies applied on Cs(I) ions include the effect of contact time, pH, initial metal concentrations, ionic strength, desorption, and recycling. The experimental results revealed that in the adsorption process carried out after equilibrium time (300 min), saturation capacity has a value of 26.72 mg·g-1 and the sorption of Cs(I) ions is dependent on pH values and ionic strength. Sorption kinetic better fit with the pseudo-second-order model; sorption isotherms apply to Langmuir, Freundlich, and Dubinin-Radushkevich (D-R) isotherm models. Data of thermodynamic parameters indicate that sorption is spontaneous and endothermic. Recycling experiments show that MoV@bentonite could be used for 7 cycles and the best eluant for the recovery of Cs(I) ions is 0.1 M HCl (76.9%). All the obtained data clarify that MoV@bentonite is considered a promising sorbent for the sorption of Cs(I) ions from aqueous solutions.
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Affiliation(s)
- Mariam Ghaly
- Hot Laboratories, and Waste Management Centre, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt
| | - Mohamed Ragab Abass
- Hot Laboratories, and Waste Management Centre, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt
| | - Zakaria Ali Mekawy
- Hot Laboratories, and Waste Management Centre, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt.
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Abass MR, El-Kenany WM, Eid MA. Sorption of cesium and gadolinium ions onto zirconium silico antimonate sorbent from aqueous solutions. Appl Radiat Isot 2023; 192:110542. [PMID: 36462302 DOI: 10.1016/j.apradiso.2022.110542] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 10/24/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022]
Abstract
Using a batch equilibrium technique, the sorption of 137Cs and 153Gd onto synthesized zirconium silico antimonate (ZrSiSb) sorbent was examined. The new sorbent was prepared by precipitation technique and characterized by diverse analytical tools. The influence of shaking time, pH, metal ion concentrations, temperature, and a real sample was carried out. The data indicate that ZrSiSb has a very fast equilibrium time (30 min). The distribution coefficient values as a function of pH have sequence order; Cs(I) > Gd(III). The reaction kinetic obeys the pseudo-2nd-order model. The saturation capacity is 69.8 and 27.2 mg/g for Cs(I) and Gd(III), respectively. Equilibrium data were analyzed by various sorption isotherm models. Desorption studies showed that the best eluents for complete recovery (about 99%) of the selected ions are KCl for Cs(I) and CaCl2 for Gd(III). The sorption effectiveness of the new ZrSiSb to remove 137Cs and 153Gd from real low-level radioactive waste was examined. The results obtained showed that the prepared new composite can be applied as a hoped sorbent material to get rid of these radionuclides from different wastewaters.
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Affiliation(s)
- M R Abass
- Hot Laboratories and Waste Management Centre, Egyptian Atomic Energy Authority, 13759, Cairo, Egypt
| | - W M El-Kenany
- Hot Laboratories and Waste Management Centre, Egyptian Atomic Energy Authority, 13759, Cairo, Egypt.
| | - M A Eid
- Hot Laboratories and Waste Management Centre, Egyptian Atomic Energy Authority, 13759, Cairo, Egypt
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Abass M, Breky M, Maree R. Removal of 137Cs and 90Sr from simulated low-level radioactive waste using tin(IV) vanadate sorbent and its potential hazardous parameters. Appl Radiat Isot 2022; 189:110417. [DOI: 10.1016/j.apradiso.2022.110417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 08/01/2022] [Accepted: 08/10/2022] [Indexed: 11/30/2022]
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Novikau R, Lujanienė G, Pakštas V, Talaikis M, Mažeika K, Drabavičius A, Naujokaitis A, Šemčuk S. Adsorption of caesium and cobalt ions on the muscovite mica clay-graphene oxide-γ-Fe 2O 3-Fe 3O 4 composite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:74933-74950. [PMID: 35648351 DOI: 10.1007/s11356-022-21078-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
The muscovite mica clay-graphene oxide-maghemite-magnetite (γ-Fe2O3-Fe3O4) composite was first used for the adsorption of caesium(I) and cobalt(II). The presence of clay minerals, graphene oxide, maghemite, and magnetite was detected in the prepared composite by XRD, WD-XRF, Mössbauer spectroscopy, and ATR-FTIR. The SEM and TEM results show that the composite has a layered structure with irregularly shaped pores on the surface. It was found that the adsorption of ions depends on the initial concentration, pH (except for caesium), mass of adsorbent, temperature, and contact time. The maximum adsorption capacity for Cs(I) and Co(II) was 2286 mg/g and 652 mg/g, respectively, and was obtained at concentrations (Cs(I) = 12,630 mg/L; Co(II) = 3200 mg/L), adsorbent mass of 0.01 g, pH (Cs(I) = 7; Co(II) = 5), temperature of 20 ± 1 °C, and contact time of 24 h. The high adsorption capacity of the composite could be due to a diversity of functional groups, a large number of active sites or the multilayer adsorption of caesium and cobalt ions on the surface of the composite. The Freundlich, Langmuir isotherms, and the pseudo-second-order kinetic model better describe the adsorption of these ions on the composite. The adsorption was non-spontaneous endothermic for Cs(I) and spontaneous endothermic for Co(II). The proposed mechanism of adsorption of Cs and Co ions on the composite is complex and involves electrostatic interactions and ion exchange. The ANFIS model proved to be quite effective in predicting the adsorption of Cs(I) and Co(II), as shown by the obtained values of R2, MSE, SSE, and ARE.
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Affiliation(s)
- Raman Novikau
- Department of Environmental Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, 02300, Vilnius, Lithuania.
| | - Galina Lujanienė
- Department of Environmental Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, 02300, Vilnius, Lithuania
| | - Vidas Pakštas
- Department of Characterisation of Materials Structure, State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, 10257, Vilnius, Lithuania
| | - Martynas Talaikis
- Department of Organic Chemistry, State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, 10257, Vilnius, Lithuania
| | - Kęstutis Mažeika
- Department of Nuclear Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, 02300, Vilnius, Lithuania
| | - Audrius Drabavičius
- Department of Characterisation of Materials Structure, State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, 10257, Vilnius, Lithuania
| | - Arnas Naujokaitis
- Department of Characterisation of Materials Structure, State Research Institute Center for Physical Sciences and Technology, Saulėtekio al. 3, 10257, Vilnius, Lithuania
| | - Sergej Šemčuk
- Department of Environmental Research, State Research Institute Center for Physical Sciences and Technology, Savanoriu Ave. 231, 02300, Vilnius, Lithuania
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Abass MR, El-Kenany WM, El-Masry EH. High efficient removal of lead(II) and cadmium(II) ions from multi-component aqueous solutions using polyacrylic acid acrylonitrile talc nanocomposite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:72929-72945. [PMID: 35619002 PMCID: PMC9522767 DOI: 10.1007/s11356-022-21023-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 05/18/2022] [Indexed: 04/16/2023]
Abstract
This study is interested in the removal of Pb(II), Cd(II), Co(II), Zn(II), and Sr(II) onto polyacrylic acid acrylonitrile talc P(AA-AN)-talc nanocomposite. P(AA-AN)-talc was fabricated using γ-irradiation-initiated polymerization at 50 kGy. Different analytical tools were used to investigate the functional groups, morphology, particle size, and structure of this composite. The ability of P(AA-AN)-talc to capture (Pb2+, Cd2+, Co2+, Zn2+, and Sr2+) as multi-component aqueous solutions was performed by a batch method. Saturation capacity and the effect of (agitating time, pH, initial metal concentrations, and temperature) were investigated. The distribution coefficients at different pHs have order: Pb2+ > Cd2+ > Co2+ > Zn2+ > Sr2+. The saturation capacity decreases by increasing heating temperatures. Reaction kinetic obeys the pseudo-second-order model. Sorption isotherms are more relevant to a Langmuir isotherm, and the monolayer sorption capacity is closed to saturation capacity. Thermodynamic parameters (∆G˚, ∆H˚, and ∆S˚) were endothermic and spontaneous. P(AA-AN)-talc is used for loading and recovery of studied cations in the column system. The study confirms that P(AA-AN)-talc is a promised composite for the sorption of the studied ions from aqueous solutions and should be considered as potential material for decontaminating these ions.
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Affiliation(s)
- Mohamed Ragab Abass
- Hot Laboratories and Waste Management Center, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt.
| | - Wafaa Mohamed El-Kenany
- Hot Laboratories and Waste Management Center, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt
| | - Eman Hassan El-Masry
- Hot Laboratories and Waste Management Center, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt
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Eid MA, Abass MR, El-Kenany WM. Fabrication and application of nanosized stannic oxide for sorption of some hazardous metal ions from aqueous solutions. RADIOCHIM ACTA 2022. [DOI: 10.1515/ract-2022-0044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A batch equilibrium method was utilized to evaluate the retention of Fe(III) and Pb(II) onto stannic oxide (SnO2) nanomaterial. SnO2 was prepared by a simple precipitation method and characterized by different analytical apparatuses like FT-IR, SEM, TEM, and XRD. Scherrer’s formula and Williamson-Hall (WH) analysis were utilized to detect the crystallite size and lattice strain. The XRD and TEM data revealed that SnO2 has a nanoscale and crystalline nature. The retention study for Fe(III) and Pb(II) includes the influence of shaking time, batch factor, pH, initial concentrations, capacity, and applications. The data reveal that the maximum uptake of SnO2 was achieved at pH 2.5 and 3.7 for Fe(III) and Pb(II), respectively. SnO2 has a fast kinetic (60 min) and the reaction kinetic data obey the pseudo–second-order model. The capacity has values of 50.4 and 48.8 mg/g for Fe(III) and Pb(II), respectively. The real sample applications proved that SnO2 is an excellent sorbent for the capture of Pb(II) and Fe(III) from industrial wastewater and low-grade monazite (LGM) respectively, in addition to the capture of 59Fe radionuclide from low-level radioactive waste (LLRW).
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Affiliation(s)
- Marwa Ahmed Eid
- Hot Laboratories and Waste Management Center, Egyptian Atomic Energy Authority , 13759 Cairo , Egypt
| | - Mohamed Ragab Abass
- Hot Laboratories and Waste Management Center, Egyptian Atomic Energy Authority , 13759 Cairo , Egypt
| | - Wafaa Mohamed El-Kenany
- Hot Laboratories and Waste Management Center, Egyptian Atomic Energy Authority , 13759 Cairo , Egypt
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Ibrahiem HH, El-Dessouky MI, El-Naggar MR, El-Masry EH, Abo-Aly MM. Microstructure of gamma-ray developed polymeric nanocomposite respecting cesium and cobalt removal from aqueous solutions. Appl Radiat Isot 2022; 187:110323. [PMID: 35724548 DOI: 10.1016/j.apradiso.2022.110323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 05/11/2022] [Accepted: 06/07/2022] [Indexed: 11/16/2022]
Abstract
The nanoparticles of fly ash (FA) were obtained by high energy ball milling of their parent Class C kind for subsequent synthesis of poly(acrylamide-acrylic acid)/fly ash (poly(AM-AA)/FA) nanocomposite. The gamma-radiation induced polymerization was applied to achieve this concern. Different techniques were utilized to characterize such nanocomposite. The sorption abilities of the synthesized nanocomposite toward 60Co2+ and 134Cs + radionuclides were evaluated using batch and fixed-bed column approaches. Batches were designed at constants of solution pH (6.5-7.0 ± 0.02), nanocomposite particle size and dosage (106-250 μm and 0.1 L/g, respectively). The microstructure of such nanocomposite (<100 nm) was mainly amorphous with porous rough surfaces containing homogenous distribution of the incorporated nano-FA. About 56.46 and 47.9 mg/g of Co2+ and Cs+ were sorbed at equilibrium with an ion exchange reaction mechanism. Langmuir, Freundlich and Dubinin-Radushkevich D-R isotherm model parameters were calculated indicating the favorability of all sorption processes. The spontaneous and endothermic natures of sorption were observed by the calculated ΔG° and ΔH° thermodynamic parameters, respectively. Thomas, Yoon-Nelson and Adams Bohart models were fitted to the fixed-bed column data at varied conditions. The predicted sorption capacities of Thomas were very close to those obtained experimentally. Modeling of the fixed-bed column data dominates that the external mass transfer kinetics was predominant in the initial parts of the fixed-beds. Values required for retaining 50% of the initial sorbate concentration were extended from 89.05 to 68.55 to 177.2 and 149.3 min for 60Co2+ and 134Cs + radionuclides, respectively, by increasing bed depth from 1.5 to 3.0 cm. Modification of FA to its nano-scale form with the subsequent synthesis of a nanocomposite material having sorption capabilities made a duplicate beneficial environmental concern.
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Affiliation(s)
- H H Ibrahiem
- Hot Laboratories Center, Egyptian Atomic Energy Authority, Post Office No. 13759, Cairo, Egypt
| | - M I El-Dessouky
- Hot Laboratories Center, Egyptian Atomic Energy Authority, Post Office No. 13759, Cairo, Egypt
| | - M R El-Naggar
- Hot Laboratories Center, Egyptian Atomic Energy Authority, Post Office No. 13759, Cairo, Egypt.
| | - E H El-Masry
- Hot Laboratories Center, Egyptian Atomic Energy Authority, Post Office No. 13759, Cairo, Egypt
| | - M M Abo-Aly
- Department of Chemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
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Abass MR, Ibrahim AB, Abou-Mesalam MM. Sorption and Selectivity Behavior of Some Rare Earth Elements on Bentonite–Dolomite Composites as Natural Materials. RADIOCHEMISTRY 2022. [DOI: 10.1134/s1066362222030122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Gamma Irradiation-Induced Preparation of Polyacrylonitrile Acrylamide Nano-silica for Removal of Some Hazardous Metals. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-02156-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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