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Naggar AH, Dhmees A, Seaf-Elnasr TA, Chong KF, Ali GAM, Ali HM, Kh Alshamery RM, AlNahwa LHM, Bakr ASA. Eco-friendly and cost-effective adsorbent derived from blast furnace slag with black liquor waste for hazardous remediation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:3872-3886. [PMID: 38093080 DOI: 10.1007/s11356-023-31453-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/05/2023] [Indexed: 01/19/2024]
Abstract
The current investigation concerns with preparation eco-friendly and cost-effective adsorbent (mesoporous silica nanoparticles (SBL)) based on black liquor (BL) containing lignin derived from sugarcane bagasse and combining it with sodium silicate derived from blast furnace slag (BFS) for thorium adsorption. Thorium ions were adsorbed from an aqueous solution using the synthesized bio-sorbent (SBL), which was then assessed by X-ray diffraction, BET surface area analysis, scanning electron microscopy with energy dispersive X-ray spectroscopy (EDX), and Fourier transforms infrared spectroscopy (FTIR). Th(IV) sorption properties, including the pH effect, uptake rate, and sorption isotherms across various temperatures were investigated. The maximum sorption capacity of Th(IV) on SBL is 158.88 mg/L at pH value of 4328 K, and 60 min contact time. We demonstrated that the adsorption processes comport well with pseudo-second-order and Langmuir adsorption models considering the kinetics and equilibrium data. According to thermodynamic inspections results, the Th(IV) adsorption process exhibited endothermic and random behavior suggested by positive ΔH° and ΔS° values, while the negative ΔG° values indicated a spontaneous sorption process. The maximum Th(IV) desorption from the loaded SBL (Th/SBL) was carried out at 0.25 M of NaHCO3 and 60 min of contact. Sorption/desorption processes have five successive cycles. Finally, this study suggests that the recycling of BFS and BL can be exploited for the procurement of a promising Th(IV) adsorbents.
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Affiliation(s)
- Ahmed H Naggar
- Department of Chemistry, College of Science and Arts, Jouf University, Al-Qurayyat, Saudi Arabia.
| | - Abdelghaffar Dhmees
- Department of Analysis and Evaluation, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, 11727, Egypt
| | - Tarek A Seaf-Elnasr
- Department of Chemistry, College of Science, Jouf University, Sakaka, Saudi Arabia
| | - Kwok Feng Chong
- Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang Al-Sultan Abdullah, 26300, Gambang, Kuantan, Malaysia
| | - Gomaa A M Ali
- Chemistry Department, Faculty of Science, Al-Azhar University, Assiut, 71524, Egypt
| | - Hazim M Ali
- Department of Chemistry, College of Science, Jouf University, Sakaka, Saudi Arabia
| | | | - Lubna H M AlNahwa
- Department of Chemistry, College of Science, Jouf University, Sakaka, Saudi Arabia
| | - Al-Sayed A Bakr
- Department of Analysis and Evaluation, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, 11727, Egypt
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2
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Ali JS, Ma M, Alamova M, Chong C, Duda A, Liu F, Groveman S, Alexandratos SD, Younes A. Investigation of Chelating Agents for the Removal of Thorium from Human Teeth upon Nuclear Contamination. Chem Res Toxicol 2023; 36:1693-1702. [PMID: 37871261 DOI: 10.1021/acs.chemrestox.3c00161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Thorium-232 (232Th) is a radioactive heavy metal that is of increasing interest as a source of nuclear energy. However, upon nuclear incidents, the ingestion or inhalation of Th in major quantities can contribute to chemical and radiological health problems, including accumulation in the bone tissue and an increased risk of developing pancreatic, lung, and hematopoietic cancers. The major mineral component of the bone is hydroxyapatite (HAP)─also the major mineral component of the teeth. As such, the teeth are the first site of exposure upon oral ingestion of Th-contaminated materials, and Th can pose a potential risk to teeth development. In essence, in the case of human contamination, it is critical to identify effective chelating agents capable of removing Th. Using a batch study methodology, this present work investigates the uptake and the removal of Th from synthetic HAP and from teeth samples by diethylenetriamine pentaacetate (DTPA), ethylenediaminetetraacetic acid (EDTA), and other promising chelating agents. Th uptake over synthetic HAP exceeds 98% at physiological pH with <1 min of contact time and uptake exceeds 90% across the entire pH range. Regarding teeth, over 1 mg Th uptaken per gram of tooth is observed after 24 h. The overall effectiveness of chelating agents for the removal of Th from is as follows: DTPA > EDTA > NaF/mouthwash/3,4,3-LI(1,2-HOPO); this trend was observed both in synthetic HAP and Th-impregnated teeth samples.
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Affiliation(s)
- Jafar Sunga Ali
- Department of Chemistry, Hunter College, 695 Park Ave, New York, New York 10065, United States
| | - Michelle Ma
- Department of Chemistry, Hunter College, 695 Park Ave, New York, New York 10065, United States
| | - Malika Alamova
- Department of Chemistry, Hunter College, 695 Park Ave, New York, New York 10065, United States
| | - Chloe Chong
- Department of Chemistry, Hunter College, 695 Park Ave, New York, New York 10065, United States
| | - Artem Duda
- Department of Chemistry, Hunter College, 695 Park Ave, New York, New York 10065, United States
| | - Felicity Liu
- Department of Chemistry, Hunter College, 695 Park Ave, New York, New York 10065, United States
| | - Samuel Groveman
- Department of Chemistry and Environmental Science, Medgar Evers College, 1650 Bedford Ave #2010, Brooklyn, New York 11225, United States
| | - Spiro D Alexandratos
- Department of Chemistry, Hunter College, 695 Park Ave, New York, New York 10065, United States
- The Graduate Center of the City University of New York, New York, New York 10016, United States
| | - Ali Younes
- Department of Chemistry, Hunter College, 695 Park Ave, New York, New York 10065, United States
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3
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The Structure of Ordered Mesoporous Materials Synthesized from Aluminum Phyllosilicate Clay (Bentonite). Molecules 2023; 28:molecules28062561. [PMID: 36985532 PMCID: PMC10058435 DOI: 10.3390/molecules28062561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/06/2023] [Accepted: 03/09/2023] [Indexed: 03/15/2023] Open
Abstract
This paper reports the synthesis and structural analysis of mesoporous silica materials with the use of aluminum phyllosilicate clay (bentonite) as an alternative silica source. In the proposed synthesis, bentonite, as natural aluminosilicate, was used instead of commercially available and quite expensive tetraethyl orthosilicate (TEOS) silica source. The objective of the research study was to determine the effect of aluminum loading in the mesoporous silica body for ordering structure, porosity, and potential sorption capacity to thorium ions. The unique direction developed in this procedure is focused on preparing advanced materials from natural sources with their own desired functionality and general availability. The applied procedure based on the classic, one-step synthesis of SBA-15 silicates was modified by gradually increasing the bentonite amount with simultaneous reduction of the TEOS content. The structural and morphological characterization, as well as evaluation of the porous structure of the obtained materials, was performed using powder wide-angle X-ray diffraction (XRD), small-angle scattering (SAXS), transmission and scanning electron microscopy (TEM, SEM), low-temperature nitrogen adsorption–desorption methods and potentiometric titration. The new, cost-effective composites for the removal of Th(IV) ions are proposed. The synergistic effect of expanding the porous surface using bentonite as a silica precursor and the presence of thorium-binding groups (such as Al2O3) is indicated.
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Prasetyo E, Toyoda K. Humic acid attachment on chitosan-modified silica gel as an economical, efficient, and selective adsorbent for thorium and uranium removal. ENVIRONMENTAL TECHNOLOGY 2023; 44:170-184. [PMID: 34384343 DOI: 10.1080/09593330.2021.1968038] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 07/18/2021] [Indexed: 06/13/2023]
Abstract
A novel, low-cost adsorbent material was prepared by the immobilization of humic acid on a silica gel surface coated with cross-linked chitosan (SiChiHA). The adsorbent was developed to remove selectively of Th(IV) and U(VI) from aqueous solution, including their pre-concentration and separation from lanthanides and high salinity conditions. A simple waste-less humic acid immobilization method was shown to be successful based on FT-IR, SEM-EDS, and zeta potential characterization results. The adsorbent was found to be stable over a wide pH range, with the highest capacities obtained at pH 3.5 (Th(IV)) and pH 5 (U(VI)). Langmuir model calculations yielded a maximum capacity of 30.6 mg g-1 and 75.4 mg g-1 for Th(IV) and U(VI). The adsorption process was found to be rapid (half concentration was removed within 10 min) and best described by a pseudo-second order rate equation. Increasing NaCl concentration up to 2 mol L-1 or lanthanide concentration up to 100 times did not significantly affect the removal efficiency for either Th(IV) of U(VI). Both elements could be sequentially separated by elution with ammonium citrate and nitric acid, respectively. The adsorption-desorption experiment showed that the adsorbent could be used for at least five cycles without significant capacity loss. This study provides insight into the development of low-cost adsorbent with practical functionality, including separation and regeneration ability, the advantageous properties scarcely reported in low-cost adsorbent literature.
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Affiliation(s)
- Erik Prasetyo
- Graduate School of Environmental Science (GSES), Hokkaido University, Sapporo, Japan
- Research Unit for Mineral Technology, Indonesian Institute of Sciences, Bandar Lampung, Indonesia
| | - Kazuhiro Toyoda
- Graduate School of Environmental Science (GSES), Hokkaido University, Sapporo, Japan
- Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Japan
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Choi MY, Kang JK, Lee CG, Park SJ. Feasibility of fluoride removal using calcined Mactra veneriformis shells: Adsorption mechanism and optimization study using RSM and ANN. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.10.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kaynar UH. Modeling and optimization for adsorption of thorium (IV) ions using nano Gd:ZnO: application of response surface methodology (RSM) and artificial neural network (ANN). INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2022.2072345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- Umit H. Kaynar
- Faculty of Engineering and Architecture, Department of Fundamental Sciences, Bakırcay University, Menemen, Izmir, Turkey
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Meng F, Huang Q, Larson SL, Han FX. The Adsorption Characteristics of Uranium(VI) from Aqueous Solution on Leonardite and Leonardite-Derived Humic Acid: A Comparative Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:12557-12567. [PMID: 34661416 DOI: 10.1021/acs.langmuir.1c01838] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The humic substance is a low-cost and effective adsorbent with abundant functional groups in remediating uranium (U) (VI)-contaminated water. In this research study, leonardite together with leonardite-derived humic acid (L-HA) was used to eliminate U(VI) from water under diverse temperatures (298, 308, and 318 K). L-HA showed a higher adsorption volume for U(VI) than leonardite. U adsorption was varied with pH and increased with temperature. The adsorption kinetics of L-HA had a higher determination coefficient (R2) for pseudo-second-order (R2 > 0.993) and Elovich (R2 > 0.987) models, indicating possible chemisorption-assisted adsorption. This was further supported with the activation energies (15.9 and 13.2 kJ/mol for leonardite and L-HA, respectively). Moreover, U(VI) equilibrium adsorption on leonardite was better depicted with the Freundlich model (R2 > 0.970), suggesting heterogeneous U(VI) adsorption onto the leonardite surface. However, U(VI) adsorption onto L-HA followed the Langmuir equation (R2 > 0.971), which implied the dominant role of monolayer adsorption in controlling the adsorption process. Thermodynamic parameters, including standard entropy change (ΔS0 > 0), Gibbs free energy (ΔG0 < 0), and standard enthalpy change (ΔH0 > 0), suggested a spontaneous and endothermal adsorption process. In addition, ionic species negatively affected U(VI) adsorption by leonardite and L-HA.
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Affiliation(s)
- Fande Meng
- College of Resource and Environment, Anhui Science and Technology University, Fengyang, Anhui 233100, China
- Department of Chemistry, Physics and Atmospheric Sciences, Jackson State University, Jackson, Mississippi 39217, United States
| | - Qiuxiang Huang
- College of Resource and Environment, Anhui Science and Technology University, Fengyang, Anhui 233100, China
| | - Steven L Larson
- U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Rd, Vicksburg, Mississippi 39180, United States
| | - Fengxiang X Han
- Department of Chemistry, Physics and Atmospheric Sciences, Jackson State University, Jackson, Mississippi 39217, United States
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8
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Kaynar UH, Çam Kaynar S, Ekdal Karali E, Ayvacıkli M, Can N. Adsorption of thorium (IV) ions by metal ion doped ZnO nanomaterial prepared with combustion synthesis: Empirical modelling and process optimization by response surface methodology (RSM). Appl Radiat Isot 2021; 178:109955. [PMID: 34547650 DOI: 10.1016/j.apradiso.2021.109955] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 08/19/2021] [Accepted: 09/14/2021] [Indexed: 02/07/2023]
Abstract
Environmental problems have reached enormous dimensions, driving efforts to remove and recycle waste from energy and industrial production. In particular, removing the radionuclide contamination that occurs as the nuclear industry grows is difficult and costly, but it is vital. Technologic and economical methods and advanced facilities are needed for the separation and purification of radioactive elements arising from the nuclear industry and uranium and thorium mining. With the adsorption method, which is the most basic separation and recovery method, the use of high-capacity nanomaterials has recently gained great importance in reducing the activity of the waste, reducing its volume by transforming it into solid form, and recovering and removing liquid radioactive wastes that might harm the ecological environment. This study aimed to determine the adsorption properties of metal ion-doped nano ZnO (nano-ZnO:Al) material synthesized by the microwave-assisted gel combustion method for the adsorption of thorium (IV) from aqueous media. First, characterization processes such as XRD, SEM, BET and zeta potential were performed to observe changes in the host ZnO adsorbent structure caused by the doping process. Later, this was optimized via the response surface method (RSM), which is widely used in the characterization of the adsorption properties of thorium (IV) from aqueous solutions. Such characterization is commonly used in industrial research. We tested how pH (3-8), temperature (20-60 °C), Th (IV) concentration (25-125 mg/L) and adsorbent amount (0.01-0.1 g) affect adsorption efficiency. The best possible combinations of these parameters were determined by RSM. It was calculated by RSM that the design fits the second order (quadratic) model using the central composite design (CCD) for the design of experimental conditions. R2 and R2 adjusted values from the parameters showing the model fit were 0.9923 and 0.9856, respectively. According to the model, the experimental adsorption capacity was 192.3 mg/g for the doped-ZnO nanomaterial under the theoretically specified optimum conditions. Also, the suitability of Th (IV) adsorption to isotherms was examined and thermodynamic parameters were calculated.
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Affiliation(s)
- U H Kaynar
- Bakırcay University, Faculty of Engineering and Architecture, Department of Fundamental Sciences, Menemen, Izmir, Turkey
| | - S Çam Kaynar
- Department of Physics, Manisa Celal Bayar University, Faculty of Arts and Sciences, Muradiye, Manisa, 45010, Turkey
| | - E Ekdal Karali
- Ege University, Institute of Nuclear Sciences, 35100, Bornova, Izmir, Turkey
| | - M Ayvacıkli
- Manisa Celal Bayar University, Hasan Ferdi Turgutlu Technology Faculty, Mechatronics Engineering, Turgutlu-Manisa, Turkey
| | - N Can
- Department of Physics, Manisa Celal Bayar University, Faculty of Arts and Sciences, Muradiye, Manisa, 45010, Turkey; Jazan University, Physics Department, P.O. Box 114, 45142, Jazan, Saudi Arabia.
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Mubark AE, Falila NI, Salem HM. Use of Modified Cellulose Sorbents for the Extraction of Th(IV) Ions From Chloride Solutions. RADIOCHEMISTRY 2021. [DOI: 10.1134/s1066362221040123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Giannakoudakis DA, Anastopoulos I, Barczak M, Αntoniou Ε, Terpiłowski K, Mohammadi E, Shams M, Coy E, Bakandritsos A, Katsoyiannis IA, Colmenares JC, Pashalidis I. Enhanced uranium removal from acidic wastewater by phosphonate-functionalized ordered mesoporous silica: Surface chemistry matters the most. JOURNAL OF HAZARDOUS MATERIALS 2021; 413:125279. [PMID: 33607585 DOI: 10.1016/j.jhazmat.2021.125279] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/16/2021] [Accepted: 01/28/2021] [Indexed: 05/27/2023]
Abstract
The removal of uranium species from aqueous phases using non-hazardous chemicals is still an open challenge, and remediation by adsorption is a prosperous strategy. Among the most crucial concerns regarding the design of an efficient material as adsorbent are, except the cost and the green character, the feasibility to be stable and effective under acidic pH, and to selectively adsorb the desired metal ion (e.g. uranium). Herein, we present a phosphonate functionalized ordered mesoporous silica (OMS-P), prepared by a one-step co-condensation synthesis. The physicochemical features of the material were determined by HR-TEM, XPS, EDX, N2 sorption, and solid NMR, while the surface zeta potential was also measured. The removal efficiency was evaluated at two different temperatures (20 and 50 °C) in acidic environment to avoid interferences like solid phase formation or carbonate complexation and the adsorption isotherms, including data fitting with Langmuir and Freundlich models and thermodynamic parameters are presented and discussed. The high and homogeneous dispersion of the phosphonate groups within the entire silica's structure led to the greatest reported up-todays capacity (345 mg/g) at pH = 4, which was achieved in less than 10 min. Additionally, OMS-P showed that the co-presence of other polyvalent cation like Eu(III) did not affect the efficiency of adsorption, which occurs via inner-sphere complex formation. The comparison to the non-functionalized silica (OMS) revealed that the key feature towards an efficient, stable, and selective removal of the U(VI) species is the specific surface chemistry rather than the textural and structural features. Based on all the results and spectroscopic validations of surface adsorbed U(VI), the main interactions responsible for the elevated uranium removal were proposed.
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Affiliation(s)
| | - Ioannis Anastopoulos
- Department of Chemistry, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus; Department of Electronics Engineering, School of Engineering, Hellenic Mediterranean University, Chania, Crete 73100, Greece.
| | - Mariusz Barczak
- Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, 20-031 Lublin, Poland.
| | - Εvita Αntoniou
- Department of Chemistry, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus
| | - Konrad Terpiłowski
- Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, 20-031 Lublin, Poland
| | - Elmira Mohammadi
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacky University, Slechtitelu 27, Olomouc 78371, Czech Republic
| | - Mahmoud Shams
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Emerson Coy
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznań, Poland
| | - Aristides Bakandritsos
- Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacky University, Slechtitelu 27, Olomouc 78371, Czech Republic; Nanotechnology Centre, Centre of Energy and Environmental Technologies, VŠB-Technical University of Ostrava, 708 00 Ostrava-Poruba, Czech Republic
| | - Ioannis A Katsoyiannis
- Aristotle University, Department of Chemistry, Laboratory of Chemical and Environmental Technology, 54124 Thessaloniki, Greece
| | - Juan Carlos Colmenares
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Ioannis Pashalidis
- Department of Chemistry, University of Cyprus, P.O. Box 20537, CY-1678 Nicosia, Cyprus.
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Kasar S, Mishra S, Sahoo SK, Kavasi N, Omori Y, Arae H, Sorimachi A, Aono T. Sorption-desorption coefficients of uranium in contaminated soils collected around Fukushima Daiichi Nuclear Power Station. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2021; 233:106617. [PMID: 33866199 DOI: 10.1016/j.jenvrad.2021.106617] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/08/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
Various radionuclides including fission products and heavy nuclides were released into the environment during the Fukushima Daiichi Nuclear Power Station (FDNPS) accident. The dissolution followed by migration of deposited radionuclides of Cs, Sr and U on soils could take place to the local environment. Therefore, it is necessary to determine sorption-desorption coefficients of U in soil-water system around the FDNPS from a migration viewpoint. The determination of sorption coefficient Kd(S) as well as desorption coefficient Kd(D) for U has been carried out in the present study using a laboratory batch method. Stable U was used for sorption from simulated ground water onto contaminated soil samples collected from Okuma Town, Fukushima. Different soil parameters were measured to understand their effects on sorption and desorption processes. The obtained Kd(S) and Kd(D) values of U were compared with values of Kd(S) and Kd(D) of Cs and Sr and Kd(S)-U in known Fukushima accident contaminated soils reported in the literature for better understanding. It was observed that Kd(S)-U varied from 160 to 5100 L/kg, whereas Kd(D)-U ranged from 200 to 11000 L/kg. Kd(D) was higher than Kd(S) for U in these soils implying irreversibility of the sorption process. Pearson's correlation of Kd(S) values suggested that U sorption is affected by various soil parameters. However, desorption is decided by the nature of U species formed in sorption process and soil parameters like pH, presence of carbonates, Ca ions, clay minerals etc. to some extent. The comparison between Kd(S) and Kd(D) values for Cs, Sr and U revealed that unsorbed Sr could migrate farther than unsorbed Cs or U under the present experimental conditions. Both sorption and desorption studies are of great importance to understand migration of metal ions from contaminated sites to local uncontaminated areas.
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Affiliation(s)
- S Kasar
- Environmental Radionuclides Research Group, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1Anagawa, Chiba, 263-8555, Japan
| | - S Mishra
- Environmental Radionuclides Research Group, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1Anagawa, Chiba, 263-8555, Japan; Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - S K Sahoo
- Environmental Radionuclides Research Group, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1Anagawa, Chiba, 263-8555, Japan.
| | - N Kavasi
- Environmental Radionuclides Research Group, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1Anagawa, Chiba, 263-8555, Japan
| | - Y Omori
- Department of Radiation Physics and Chemistry, Fukushima Medical University, 1, Hikarigaoka, Fukushima 960-1295, Japan
| | - H Arae
- Environmental Radionuclides Research Group, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1Anagawa, Chiba, 263-8555, Japan
| | - A Sorimachi
- Integrated Center for Science and Humanities, Fukushima Medical University, 1, Hikarigaoka, Fukushima 960-1295, Japan
| | - T Aono
- Environmental Radionuclides Research Group, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1Anagawa, Chiba, 263-8555, Japan
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Albayari M, Nazal MK, Khalili FI, Nordin N, Adnan R. Biochar derived from Salvadora persica branches biomass as low-cost adsorbent for removal of uranium(VI) and thorium(IV) from water. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07667-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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13
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Zhang Y, Yang M, Gui H, Zhao T, Tan W, Wang H. Study on the denitrification and dephosphorization of the aqueous solution by Chitosan/4A Zeolite/Zr based Zeolite. ENVIRONMENTAL TECHNOLOGY 2021; 42:227-237. [PMID: 31159672 DOI: 10.1080/09593330.2019.1625958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 05/25/2019] [Indexed: 06/09/2023]
Abstract
The ternary hybrid material chitosan/4A Zeolite/Zr based Zeolite was synthesized by using 4A zeolite molecular sieve, Zr-zeolite and chitosan acetic acid solution as starting materials. The prepared composite were characterized by SEM, FT-IR and XRD. The experimental conditions such as the concentration of chitosan acetic acid solution, mass ratio of mass ratio of chitosan acetic acid solution, 4A zeolite molecular sieve and Zr-zeolite functional material, the optimum calcination temperature were optimized. Under this optimum conditions, the denitrification and dephosphorization effect can reach more than 70% when pH value was at 3-9. Dynamics research results showed that the ammonia nitrogen and phosphorus removal progress by chitosan/4A Zeolite/Zr based Zeolite was in accordance could be well described by the pseudo-second-order kinetic model, and the adsorption rate is up to 6.439 g/min. The isothermal adsorption process was in accordance with Freundlich model.
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Affiliation(s)
- Yuanling Zhang
- A School of Chemistry and Environment, Yunnan Minzu University, Kunming, People's Republic of China
| | - Min Yang
- A School of Chemistry and Environment, Yunnan Minzu University, Kunming, People's Republic of China
| | - Hua Gui
- A School of Chemistry and Environment, Yunnan Minzu University, Kunming, People's Republic of China
| | - Tiantian Zhao
- A School of Chemistry and Environment, Yunnan Minzu University, Kunming, People's Republic of China
| | - Wei Tan
- A School of Chemistry and Environment, Yunnan Minzu University, Kunming, People's Republic of China
| | - Hongbin Wang
- A School of Chemistry and Environment, Yunnan Minzu University, Kunming, People's Republic of China
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Separation of Radionuclides from a Rare Earth-Containing Solution by Zeolite Adsorption. MINERALS 2020. [DOI: 10.3390/min11010020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The increasing industrial demand for rare earths requires new or alternative sources to be found. Within this context, there have been studies validating the technical feasibility of coal and coal byproducts as alternative sources for rare earth elements. Nonetheless, radioactive materials, such as thorium and uranium, are frequently seen in the rare earths’ mineralization, and causes environmental and health concerns. Consequently, there exists an urgent need to remove these radionuclides in order to produce high purity rare earths to diversify the supply chain, as well as maintain an environmentally-favorable extraction process for the surroundings. In this study, an experimental design was generated to examine the effect of zeolite particle size, feed solution pH, zeolite amount, and contact time of solid and aqueous phases on the removal of thorium and uranium from the solution. The best separation performance was achieved using 2.50 g of 12-µm zeolite sample at a pH value of 3 with a contact time of 2 h. Under these conditions, the adsorption recovery of rare earths, thorium, and uranium into the solid phase was found to be 20.43 wt%, 99.20 wt%, and 89.60 wt%, respectively. The Freundlich adsorption isotherm was determined to be the best-fit model, and the adsorption mechanism of rare earths and thorium was identified as multilayer physisorption. Further, the separation efficiency was assessed using the response surface methodology based on the development of a statistically significant model.
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Bi L, Ma J, Niu Z, Duan G, Lei Z, Wu R, Hu P, Qian L, Wu W, Liu T. Synthesis of β-cyclodextrin derivatives and their selective separation behaviors for U(VI) in solution. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07343-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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16
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Zhao W, Ren B, Hursthouse A, Jiang F. The adsorption of Mn(II) by insolubilized humic acid. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:747-758. [PMID: 32970626 DOI: 10.2166/wst.2020.384] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The eco-friendly and non-toxic natural organic substance, insolubilized humic acid (IHA), was used to remove Mn(II) from aqueous solutions. The adsorption characteristics were studied through a series of static adsorption tests. The results show that conditions such as the dose, the pH of the solution and the initial concentration of Mn(II) all affect removal efficiency, and the optimal pH value was 5.5. The sorption process for Mn(II) on IHA conforms to the pseudo-second-order adsorption kinetic model and intra-particle diffusion is not the only factor affecting the adsorption rate. Both Langmuir and Freundlich models can describe this adsorption behavior, and the experimental maximum adsorption capacity of IHA was 52.87 mg/g under optimal conditions. The thermodynamic analysis of adsorption shows that the adsorption process is a non-spontaneous endothermic physical reaction. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) were used to characterize the samples, it was found that as IHA successfully adsorbed Mn(II), the surface morphology of IHA changed after the adsorption reaction. The adsorption mechanism for Mn(II) on IHA is to provide electron pairs for carboxyl, phenolic hydroxyl and other functional groups to form stable complexes with Mn(II).
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Affiliation(s)
- Wenlin Zhao
- School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China E-mail: ; Hunan Provincial Key Laboratory of Shale Gas Resource Exploitation, Xiangtan, 411201, China
| | - Bozhi Ren
- School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China E-mail: ; Hunan Provincial Key Laboratory of Shale Gas Resource Exploitation, Xiangtan, 411201, China
| | - Andrew Hursthouse
- School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China E-mail: ; Computing Engineering & Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK
| | - Feng Jiang
- School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China E-mail: ; Hunan Provincial Key Laboratory of Shale Gas Resource Exploitation, Xiangtan, 411201, China
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Erenturk SA, Haciyakupoglu S, Senkal BF. Investigation of interaction behaviours of cesium and strontium ions with engineering barrier material to prevent leakage to environmental. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2020; 213:106101. [PMID: 31743850 DOI: 10.1016/j.jenvrad.2019.106101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 10/31/2019] [Accepted: 11/03/2019] [Indexed: 06/10/2023]
Abstract
This study deals with performance of removal of cesium (Cs+) and strontium (Sr2+) ions from synthetic aqueous solution using amino pyridine sulfone amid resin as a barrier material for nuclear waste storage areas to reduce environmental risk. The effects of adsorbate concentration, temperature and contact time on the efficiencies of the engineering barrier material for Cs+ and Sr2+ ions were investigated and evaluated. It was found that total adsorption capacity was higher for cesium ions than strontium ions. Dubinin-Radushkevich (D-R) isotherm model was well fitted to the adsorption data for both ions. The micropore capacity of the barrier material was found as 4.20 mg for strontium ions and 5.40 mg for cesium ions. ΔH values were indicated that the interaction process is exothermic for both ions. The positive value of entropy for both ions show that randomness at the solid-solution interface increased. Pseudo-second-order model was well fitted the kinetic data.
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Affiliation(s)
- S Akyil Erenturk
- Istanbul Technical University, Energy Institute, 34469, Maslak-Istanbul, Turkey.
| | - S Haciyakupoglu
- Istanbul Technical University, Energy Institute, 34469, Maslak-Istanbul, Turkey
| | - B F Senkal
- Faculty of Science and Letters, Istanbul Technical University, 34469, Maslak, Turkey
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Zhang YY, Lv JW, Dong XJ, Fang Q, Tan WF, Wu XY, Deng QW. Influence on Uranium(VI) migration in soil by iron and manganese salts of humic acid: Mechanism and behavior. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 256:113369. [PMID: 31662254 DOI: 10.1016/j.envpol.2019.113369] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 09/23/2019] [Accepted: 10/08/2019] [Indexed: 06/10/2023]
Abstract
Soil contains large amounts of humic acid (HA), iron ions and manganese ions, all of which affect U(VI) migration in the soil. HA interacts with iron and manganese ions to form HA salts (called HA-Fe and HA-Mn in this paper); however, the effects of HA-Fe and HA-Mn on the migration of U(VI) is not fully understood. In this study, HA-Fe and HA-Mn were compounded by HA interactions with ferric chloride hexahydrate and manganese chloride tetrahydrate, respectively. The influence of HA, HA-Fe and HA-Mn on U(VI) immobilization and migration was investigated by bath adsorption experiments and adsorption-desorption experiments using soil columns. The results showed that the presence of HA, HA-Fe and HA-Mn retarded the migration of U(VI) in soil. Supported by X-ray photoelectron spectroscopy (XPS) and BCR sequential extraction analyses, a plausible explanation for the retardation was that HA-Fe and HA-Mn could reduce hexavalent uranium to stable tetravalent uranium and increase the specific gravity of Fe/Mn oxide-bound uranium and organic/sulfide-bound uranium, which made it difficult for them to longitudinally migrate in soil. Scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and surface area and pore size analyses indicated that the complex formed between the hydroxyl, amino and carboxyl groups of HA-Fe and U(VI) increased the crystallinity of HA-Fe. The reaction between U(VI) and the hydroxyl, amino, aldehyde, keto and chlorine-containing groups of HA-Mn had no effect on the crystallinity of HA-Mn. Notably, the column desorption experiment found that the U(VI) immobilized in the soil remigrated under the effect of rain leaching, and acid rain promoted uranium remigration better than neutral rain. The findings provide some guidance for the decommissioning disposal of uranium contaminated site and it's risk assessments.
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Affiliation(s)
- Yuan-Yuan Zhang
- School of Resources Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Jun-Wen Lv
- School of Resources Environment and Safety Engineering, University of South China, Hengyang 421001, China; Hengyang Key Laboratory of Contamination Control and Remediation, Hengyang 421001, China.
| | - Xue-Jie Dong
- School of Resources Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Qi Fang
- School of Resources Environment and Safety Engineering, University of South China, Hengyang 421001, China; Hengyang Key Laboratory of Contamination Control and Remediation, Hengyang 421001, China
| | - Wen-Fa Tan
- School of Resources Environment and Safety Engineering, University of South China, Hengyang 421001, China; Hengyang Key Laboratory of Contamination Control and Remediation, Hengyang 421001, China
| | - Xiao-Yan Wu
- School of Resources Environment and Safety Engineering, University of South China, Hengyang 421001, China; Hengyang Key Laboratory of Contamination Control and Remediation, Hengyang 421001, China
| | - Qin-Wen Deng
- School of Resources Environment and Safety Engineering, University of South China, Hengyang 421001, China; Hengyang Key Laboratory of Contamination Control and Remediation, Hengyang 421001, China
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The Removal of Uranium and Thorium from Their Aqueous Solutions by 8-Hydroxyquinoline Immobilized Bentonite. MINERALS 2019. [DOI: 10.3390/min9100626] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The sorption of uranium and thorium from their aqueous solutions by using 8-hydroxyquinoline modified Na-bentonite (HQ-bentonite) was investigated by the batch technique. Na-bentonite and HQ-bentonite were characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier Transform Infrared (FTIR) spectroscopy. Factors that influence the sorption of uranium and thorium onto HQ-bentonite such as solution pH, contact time, initial metal ions concentration, HQ-bentonite mass, and temperature were tested. Sorption experiments were expressed by Freundlich and Langmuir isotherms and the sorption results demonstrated that the sorption of uranium and thorium onto HQ-bentonite correlated better with the Langmuir isotherm than the Freundlich isotherm. Kinetics studies showed that the sorption followed the pseudo-second-order kinetic model. Thermodynamic parameters such as ΔH°, ΔS°, and ΔG° indicated that the sorption of uranium and thorium onto HQ-bentonite was endothermic, feasible, spontaneous, and physical in nature. The maximum adsorption capacities of HQ-bentonite were calculated from the Langmuir isotherm at 303 K and were found to be 63.90 and 65.44 for U(VI) and Th(IV) metal ions, respectively.
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20
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Kinetic, isothermal and thermodynamic studies on Th(IV) adsorption by different modified activated carbons. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06830-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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21
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Xu M, Zhao Z, Shi M, Yao L, Fan T, Wang Z. Effect of humic acid on the stabilization of cadmium in soil by coprecipitating with ferrihydrite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:27330-27337. [PMID: 31321728 DOI: 10.1007/s11356-019-05893-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 07/01/2019] [Indexed: 06/10/2023]
Abstract
Coprecipitation of humic acid (HA) with ferrihydrite (Fh) has been proposed to reduce the activity of heavy metals in aqueous solutions. The effect of the amount of HA added to the coprecipitates on the stabilization of Cd in soil is unclear. In this research, five different Fh-HA coprecipitates were synthesized to study the impact of different HA additions on the fractionation of Cd in the soil and the optimal addition ratio of C/Fe. Characterization technique as Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), specific surface area analyzer, and scanning electron microscopy (SEM) was used in order to test and analyze of the microstructure and physicochemical property of the coprecipitates. The results showed that the Fh-HA coprecipitate is mainly combined by the coordination exchange of -OH on the surface of the Fh with the carboxyl group of the HA. Adding HA could stabilize Fh and increase its surface roughness. Changes in the fractionation of the Cd were used to evaluate the stabilization effect of the coprecipitate. Before treatment, Cd in different contaminated soils was existed only a small amount of residual fraction. After the addition of the Fh-HA coprecipitate, the proportion of residual Cd in each contaminated soil increased. When the C/Fe ratio was 1.5, the maximum residual fraction were 62.94%, 55.67%, and 52.99% respectively. Residual Cd could remain relatively stable indicating that the Fh-HA coprecipitate is a promising amendment for repairing Cd-contaminated soil. The addition of HA has strengthened the active role of Fh on stabilizing heavy metals.
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Affiliation(s)
- Miaomiao Xu
- Key Laboratory of Western China's Environmental System (Ministry of Education) and Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, P. R, China
| | - Zhuanjun Zhao
- Key Laboratory of Western China's Environmental System (Ministry of Education) and Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, P. R, China.
| | - Miao Shi
- Key Laboratory of Western China's Environmental System (Ministry of Education) and Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, P. R, China
| | - Liwei Yao
- Key Laboratory of Western China's Environmental System (Ministry of Education) and Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, P. R, China
| | - Tianfeng Fan
- Key Laboratory of Western China's Environmental System (Ministry of Education) and Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, P. R, China
| | - Zemin Wang
- Key Laboratory of Western China's Environmental System (Ministry of Education) and Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, P. R, China
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Nazal MK, Al-Bayyari M, Khalili FI. Salvadora Persica branches biomass adsorbent for removal of uranium(VI) and thorium(IV) from aqueous solution: kinetics and thermodynamics study. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06668-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Kinetics and Thermodynamics of Uranium (VI) Adsorption onto Humic Acid Derived from Leonardite. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16091552. [PMID: 31052550 PMCID: PMC6539073 DOI: 10.3390/ijerph16091552] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 04/24/2019] [Accepted: 04/25/2019] [Indexed: 11/17/2022]
Abstract
Humic acid (HA) is well known as an inexpensive and effective adsorbent for heavy metal ions. However, the thermodynamics of uranium (U) adsorption onto HA is not fully understood. This study aimed to understand the kinetics and isotherms of U(VI) adsorption onto HA under different temperatures from acidic water. A leonardite-derived HA was characterized for its ash content, elemental compositions, and acidic functional groups, and used for the removal of U (VI) from acidic aqueous solutions via batch experiments at initial concentrations of 0-100 mg·L-1 at 298, 308 and 318 K. ICP-MS was used to determine the U(VI) concentrations in solutions before and after reacting with the HA. The rate and capacity of HA adsorbing U(VI) increased with the temperature. Adsorption kinetic data was best fitted to the pseudo second-order model. This, together with FTIR spectra, indicated a chemisorption of U(VI) by HA. Equilibrium adsorption data was best fitted to the Langmuir and Temkin models. Thermodynamic parameters such as equilibrium constant (K0), standard Gibbs free energy (ΔG0), standard enthalpy change (ΔH0), and standard entropy change (ΔS0), indicated that U(VI) adsorption onto HA was endothermic and spontaneous. The co-existence of cations (Cu2+, Co2+, Cd2+ and Pb2+) and anions (HPO42- and SO42-) reduced U(VI) adsorption. The high propensity and capacity of leonardite-derived HA adsorbing U(VI) suggests that it has the potential for cost-effective removal of U(VI) from acidic contaminated waters.
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Mishra S, Kasar S, Takamasa A, Veerasamy N, Sahoo SK. Measurement of uranium distribution coefficient and 235U/ 238U ratio in soils affected by Fukushima dai-ichi nuclear power plant accident. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2019; 198:36-42. [PMID: 30580113 DOI: 10.1016/j.jenvrad.2018.12.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 12/14/2018] [Accepted: 12/14/2018] [Indexed: 06/09/2023]
Abstract
Fukushima Daiichi Nuclear Power Plant (FDNPP) accident resulted radioactive contamination in soil due to deposition of mainly radiocesium as well as many long-lived radionuclides surrounding a large area around FDNPP. Depending upon environmental conditions, radionuclides in soil can be mobilized in aquatic systems. Therefore, the fate and transfer of these radionuclides in the soil water system is very important for radiation protection and dose assessment. In the present study, soil and water samples were collected from contaminated areas around FDNPP. Inductively coupled plasma mass spectrometry (ICP-MS) is used for total uranium concentration. Emphasis has been given on isotope ratio measurement of 235U/238U ratio using thermal ionization mass spectrometry (TIMS) that gives us the idea about its contamination during accident. For the migration behavior, its distribution coefficient (Kd) has been determined using laboratory batch method. Chemical characterization of soil with respect to different parameters has been carried out. The effect of these soil parameters on distribution coefficient of uranium has been studied in order to explain the radionuclide mobility in this particular area. The distribution coefficient values for uranium are found to vary from 30 to 36000 L/kg. A large variation in the distribution coefficient values shows the retention or mobility of uranium is highly dependent on soil characteristics in the particular area. This variation is explained with respect to soil pH, Fe, Mn, CaCO3 and organic content. There is a very good correlation of uranium Kd obtained with Fe content. There is no enrichment of 235U has been noticed in the studied area.
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Affiliation(s)
- S Mishra
- Fukushima Project Headquarters, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1Anagawa, Inage-ku, Chiba, 263-8555, Japan; Radiation Safety System Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - S Kasar
- Fukushima Project Headquarters, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - A Takamasa
- Fukushima Project Headquarters, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1Anagawa, Inage-ku, Chiba, 263-8555, Japan
| | - N Veerasamy
- Fukushima Project Headquarters, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1Anagawa, Inage-ku, Chiba, 263-8555, Japan; Tokyo Metropolitan University, 7-2-10 Higashiogu, Arakawa-ku, Tokyo, 116-8551, Japan
| | - S K Sahoo
- Fukushima Project Headquarters, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1Anagawa, Inage-ku, Chiba, 263-8555, Japan.
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Ding H, Luo X, Zhang X, Yang H. Alginate-immobilized Aspergillus niger: Characterization and biosorption removal of thorium ions from radioactive wastewater. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.11.032] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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26
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Adsorption of uranium(VI) on mesoporous silica microspheres supported titanium hydroxide hybrid material. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-6288-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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27
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Sreenivasan R, Suma Mahesh S, Sumi VS. Synthesis and application of polymer-grafted nanocellulose/graphene oxide nano composite for the selective recovery of radionuclides from aqueous media. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1534868] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Rijith Sreenivasan
- Post Graduate and Research Department of Chemistry, Sree Narayana College, Kollam, India
| | - S Suma Mahesh
- Post Graduate and Research Department of Chemistry, Sree Narayana College, Kollam, India
| | - V S Sumi
- Department of Chemistry, University of Kerala, Kariavattom, Thiruvananthapuram, India
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Liu H, Deng S, Lei L, Feng Z, Qi C, Long W. Removal of trace thorium(IV) from aqueous solutions using a pseudo-polyrotaxane. RADIOCHIM ACTA 2018. [DOI: 10.1515/ract-2016-2746] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The adsorption of thorium(IV) was studied using a pseudo-polyrotaxane, which was obtained by the reaction of poly(propyleneglycol) (PPG) and 6-OTs-β-CD. The adsorption of thorium(IV) was examined as a function of the contact time, pH of the solution, adsorbent dose, concentration of thorium(IV) and temperature using batch adsorption experiments. The experimental results suggested that the optimum conditions were found to be at pH 3.5, contact time 40 min, 10 mg adsorbent doses, 20 mg L−1 thorium(IV) concentration and 298 K. The maximum adsorption capacity was found to be 15.366 mg g−1. The thermodynamic parameters (ΔG
0<0, ΔH
0<0) were calculated, the result showed that the adsorption of thorium(IV) was exothermic and spontaneous process.
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Affiliation(s)
- Huijun Liu
- School of Chemistry and Chemical Engineering, University of South China , No. 28, Changsheng Road (West), Zhengxiang District , Hengyang 421001, Hunan Province , P.R. China
| | - Shanxia Deng
- School of Chemistry and Chemical Engineering, University of South China , Hengyang 421001 , China
| | - Lanlin Lei
- School of Chemistry and Chemical Engineering, University of South China , Hengyang 421001 , China
| | - Zhiyuan Feng
- School of Chemistry and Chemical Engineering, University of South China , Hengyang 421001 , China
| | - Caixia Qi
- School of Chemistry and Chemical Engineering, University of South China , Hengyang 421001 , China
| | - Wei Long
- School of Chemistry and Chemical Engineering, University of South China , Hengyang 421001 , China
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Novel humic acid-based carbon materials: adsorption thermodynamics and kinetics for cadmium(II) ions. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4271-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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30
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Zhang Y, Li Y, Ning Y, Liu D, Tang P, Yang Z, Lu Y, Wang X. Adsorption and desorption of uranium(VI) onto humic acids derived from uranium-enriched lignites. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 77:920-930. [PMID: 29488955 DOI: 10.2166/wst.2017.608] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Humic acids (HAs) were extracted and characterized from three kinds of uranium-enriched lignites from Yunnan province, China. Batch experiments were used to study the adsorption and desorption behavior of uranium (VI) onto these HAs and a commercial HA. The results showed that the optimum pH level at which all the HAs adsorbed uranium(VI) ranged from 5 to 8. The high uranium content of the HAs was released into the solution at the pH values between 1 and 3; when the HA dosage was 2.5 g L-1, the maximum concentration of uranium was 44.14 μg L-1. This shows that HAs derived from uranium-enriched lignites may present a potential environmental risk when used in acidic conditions. The experimental data were found to comply with the pseudo-second-order kinetic model, and the adsorption isotherms fit the Langmuir and Freundlich models well. The desorption experiments revealed that the sorption mechanism was controlled by the complex interactions between the organic ligands of the HAs and uranium(VI). The uranium present in the HAs may not affect the adsorption capacity of the uranium(VI), but the carboxylic and phenolic hydroxyl groups in the HAs play a significant role in controlling the adsorption capacity.
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Affiliation(s)
- Yangyang Zhang
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei Province 430074, China E-mail:
| | - Yilian Li
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei Province 430074, China E-mail:
| | - Yu Ning
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei Province 430074, China E-mail:
| | - Danqing Liu
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei Province 430074, China E-mail:
| | - Peng Tang
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei Province 430074, China E-mail:
| | - Zhe Yang
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei Province 430074, China E-mail:
| | - Yu Lu
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei Province 430074, China E-mail:
| | - Xianbo Wang
- School of Environmental Studies, China University of Geosciences, Wuhan, Hubei Province 430074, China E-mail:
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31
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Prasetyo E. Humic acid provenance influence to the adsorption capacity in uranium and thorium removal. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1757-899x/285/1/012011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Wang P, Dong F, Wang X, Liu M, Nie X, Zhou L, Huo T, Zhang W, Wei H. Effects of riboflavin and AQS as electron shuttles on U(vi) reduction and precipitation byShewanella putrefaciens. RSC Adv 2018; 8:30692-30700. [PMID: 35548745 PMCID: PMC9085505 DOI: 10.1039/c8ra05715j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 08/19/2018] [Indexed: 11/21/2022] Open
Abstract
Understanding the mechanisms for electron shuttles (ESs) in microbial extracellular electron transfer (EET) is important in biogeochemical cycles, bioremediation applications, as well as bioenergy strategies.
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Affiliation(s)
- Pingping Wang
- The Key Laboratory of Solid Waste Treatment and Resource
- Ministry of Education
- Southwest University of Science and Technology
- Mianyang
- China
| | - Faqin Dong
- The Key Laboratory of Solid Waste Treatment and Resource
- Ministry of Education
- Southwest University of Science and Technology
- Mianyang
- China
| | - Xuhui Wang
- School of Life Science and Engineering
- Southwest University of Science and Technology
- Mianyang
- China
| | - Mingxue Liu
- The Key Laboratory of Solid Waste Treatment and Resource
- Ministry of Education
- Southwest University of Science and Technology
- Mianyang
- China
| | - Xiaoqin Nie
- The Key Laboratory of Solid Waste Treatment and Resource
- Ministry of Education
- Southwest University of Science and Technology
- Mianyang
- China
| | - Lei Zhou
- The Key Laboratory of Solid Waste Treatment and Resource
- Ministry of Education
- Southwest University of Science and Technology
- Mianyang
- China
| | - Tingting Huo
- The Key Laboratory of Solid Waste Treatment and Resource
- Ministry of Education
- Southwest University of Science and Technology
- Mianyang
- China
| | - Wei Zhang
- The Key Laboratory of Solid Waste Treatment and Resource
- Ministry of Education
- Southwest University of Science and Technology
- Mianyang
- China
| | - Hongfu Wei
- School of Life Science and Engineering
- Southwest University of Science and Technology
- Mianyang
- China
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33
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Meng F, Yuan G, Larson SL, Ballard JH, Waggoner CA, Arslan Z, Han FX. Removing uranium (VI) from aqueous solution with insoluble humic acid derived from leonardite. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2017; 180:1-8. [PMID: 28968541 DOI: 10.1016/j.jenvrad.2017.09.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 08/31/2017] [Accepted: 09/23/2017] [Indexed: 06/07/2023]
Abstract
The occurrence of uranium (U) and depleted uranium (DU)-contaminated wastes from anthropogenic activities is an important environmental problem. Insoluble humic acid derived from leonardite (L-HA) was investigated as a potential adsorbent for immobilizing U in the environment. The effect of initial pH, contact time, U concentration, and temperature on U(VI) adsorption onto L-HA was assessed. The U(VI) adsorption was pH-dependent and achieved equilibrium in 2 h. It could be well described with pseudo-second-order model, indicating that U(VI) adsorption onto L-HA involved chemisorption. The U(VI) adsorption mass increased with increasing temperature with maximum adsorption capacities of 91, 112 and 120 mg g-1 at 298, 308 and 318 K, respectively. The adsorption reaction was spontaneous and endothermic. We explored the processes of U(VI) desorption from the L-HA-U complex through batch desorption experiments in 1 mM NaNO3 and in artificial seawater. The desorption process could be well described by pseudo-first-order model and reached equilibrium in 3 h. L-HA possessed a high propensity to adsorb U(VI). Once adsorbed, the release of U(VI) from L-HA-U complex was minimal in both 1 mM NaNO3and artificial seawater (0.06% and 0.40%, respectively). Being abundant, inexpensive, and safe, L-HA has good potential for use as a U adsorbent from aqueous solution or immobilizing U in soils.
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Affiliation(s)
- Fande Meng
- Department of Chemistry and Biochemistry, Jackson State University, 1400 J. R. Lynch Street, P.O. Box 17910, Jackson, MS 39217, USA; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guodong Yuan
- Zhaoqing University, Zhaoqing, Guangdong 526061, China
| | - Steven L Larson
- U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Rd., Vicksburg, MS 39180-6199, USA
| | - John H Ballard
- U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Rd., Vicksburg, MS 39180-6199, USA
| | - Charles A Waggoner
- Institute for Clean Energy Technology, Mississippi State University, 205 Research Blvd, Starkville, MS 39759, USA
| | - Zikri Arslan
- Department of Chemistry and Biochemistry, Jackson State University, 1400 J. R. Lynch Street, P.O. Box 17910, Jackson, MS 39217, USA
| | - Fengxiang X Han
- Department of Chemistry and Biochemistry, Jackson State University, 1400 J. R. Lynch Street, P.O. Box 17910, Jackson, MS 39217, USA.
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Removal of U(VI) and Th(IV) from aqueous solutions by organically modified diatomaceous earth: Evaluation of equilibrium, kinetic and thermodynamic data. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.minpro.2017.08.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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35
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Chemical treatments on the cuticle layer enhancing the uranium(VI) uptake from aqueous solution by amidoximated wool fibers. J Radioanal Nucl Chem 2017. [DOI: 10.1007/s10967-017-5548-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Alqadami AA, Naushad M, Alothman ZA, Ghfar AA. Novel Metal-Organic Framework (MOF) Based Composite Material for the Sequestration of U(VI) and Th(IV) Metal Ions from Aqueous Environment. ACS APPLIED MATERIALS & INTERFACES 2017; 9:36026-36037. [PMID: 28976726 DOI: 10.1021/acsami.7b10768] [Citation(s) in RCA: 226] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The combination of magnetic nanoparticles and metal-organic frameworks (MOFs) has demonstrated their prospective for pollutant sequestration. In this work, a magnetic metal-organic framework nanocomposite (Fe3O4@AMCA-MIL53(Al) was prepared and used for the removal of U(VI) and Th(IV) metal ions from aqueous environment. Fe3O4@AMCA-MIL53(Al) nanocomposite was characterized by TGA, FTIR, SEM-EDX, XRD, HRTEM, BET, VSM (vibrating sample magnetometry), and XPS analyses. A batch technique was applied for the removal of the aforesaid metal ions using Fe3O4@AMCA-MIL53(Al) at different operating parameters. The isotherm and kinetic data were accurately described by the Langmuir and pseudo-second-order models. The adsorption capacity was calculated to be 227.3 and 285.7 mg/g for U(VI) and Th(IV), respectively, by fitting the equilibrium data to the Langmuir model. The kinetic studies demonstrated that the equilibrium time was 90 min for each metal ion. Various thermodynamic parameters were evaluated which indicated the endothermic and spontaneous nature of adsorption. The collected outcomes showed that Fe3O4@AMCA-MIL53(Al) was a good material for the exclusion of these metal ions from aqueous medium. The adsorbed metals were easily recovered by desorption in 0.01 M HCl. The excellent adsorption capacity and the response to the magnetic field made this novel material an auspicious candidate for environmental remediation technologies.
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Affiliation(s)
- Ayoub Abdullah Alqadami
- Department of Chemistry, College of Science, Building 5, King Saud University , Riyadh 11451, Kingdom of Saudi Arabia
| | - Mu Naushad
- Department of Chemistry, College of Science, Building 5, King Saud University , Riyadh 11451, Kingdom of Saudi Arabia
| | - Zeid Abdullah Alothman
- Department of Chemistry, College of Science, Building 5, King Saud University , Riyadh 11451, Kingdom of Saudi Arabia
| | - Ayman A Ghfar
- Department of Chemistry, College of Science, Building 5, King Saud University , Riyadh 11451, Kingdom of Saudi Arabia
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37
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Erenturk SA, Kaygun AK. Removal of 210Po from aqueous media and its thermodynamics and kinetics. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2017; 174:3-9. [PMID: 28187926 DOI: 10.1016/j.jenvrad.2017.01.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 01/07/2017] [Accepted: 01/10/2017] [Indexed: 06/06/2023]
Abstract
In this study, the composite adsorbent as granule was prepared by mixing of polyacrylonitrile (PAN) and a natural zeolite (clinoptilolite) in specific conditions. The prepared composite adsorbent was used for investigating the adsorption behaviour of 210Po. Adsorption of 210Po was studied in a column system. The effective parameters such as initial activity concentration of 210Po, pH of the aqueous solution, contact time and temperature of solution for adsorption behaviour of 210Po were studied. Adsorption yield of 210Po on composite adsorbent from aqueous solution in optimum conditions were determined as 75.00 ± 0.15%. The adsorption equilibrium data was examined using various well-known isotherm models such as Freundlich, Langmuir, Dubinin and Radushkevish and Tempkin, and it was observed that the experimental equilibrium data well fitted and found to be in good agreement with the Tempkin model. Adsorption thermodynamics and kinetics of the polonium were studied. It was found that the processes for 210Po were exothermic and spontaneous. The kinetic data conformed better to the pseudo-second order equation.
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Affiliation(s)
- S Akyil Erenturk
- Istanbul Technical University, Energy Institute, 34469 Maslak-Istanbul, Turkey.
| | - A Kilincarslan Kaygun
- Cekmece Nuclear Research and Training Center, Yarimburgaz Mah. Nukleer Arastirma Merkezi Yolu, 34303 Kucukcekmece-Istanbul, Turkey
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Liu S, Yang Y, Liu T, Wu W. Recovery of uranium(VI) from aqueous solution by 2-picolylamine functionalized poly(styrene- co -maleic anhydride) resin. J Colloid Interface Sci 2017; 497:385-392. [DOI: 10.1016/j.jcis.2017.02.062] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 02/22/2017] [Accepted: 02/26/2017] [Indexed: 10/20/2022]
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39
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Zhou K, Liu Y, Yang Z, Liu H. Biosorption of U(VI) by modified Hottentot Fern: Kinetics and equilibrium studies. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2017; 167:13-19. [PMID: 27887971 DOI: 10.1016/j.jenvrad.2016.11.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 07/17/2016] [Accepted: 11/10/2016] [Indexed: 06/06/2023]
Abstract
Batch experiments were conducted to investigate the biosorption of U(VI) onto Hottentot Fern (Cyclosorus interruptus). The selective adsorption, the adsorption of different sections of Cyclosorus interruptus (CI), and the adsorption of polluted CI compared with that of unpolluted one were studied in detail. The raw CI and the CI modified by CaCl2, MgCl2, MgCl2/H2O2 were investigated for adsorption of U(VI) from aqueous solution. The results indicate that raw CI showed good adsorption selectivity for U(VI), compared with the adsorption of Cu(II), Co(II) and Ni(II). The stem of CI possesses a prominent adsorption capacity compared to the leaf and root of CI, and the unpolluted CI showed its superiority in adsorption capacity than the polluted CI. Adsorption rate was very fast during the first 30 min in the whole adsorption process. The pseudo-second-order kinetics model was proposed for the adsorption of U(VI) and the equilibrium data fitted well to Langmuir adsorption isotherms. The maximum adsorption capacity of R-CI, Ca-CI, Mg-CI and Mg/H2O2-CI is 41.67, 52.63, 62.50 and 71.43 mg g-1 at 20 °C, respectively.
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Affiliation(s)
- Ke Zhou
- School of Chemistry and Chemical Engineering, Central South University, Lushan South Road 932, Changsha, Hunan, 410083, China
| | - Yaochi Liu
- School of Chemistry and Chemical Engineering, Central South University, Lushan South Road 932, Changsha, Hunan, 410083, China.
| | - Zhaoguang Yang
- School of Chemistry and Chemical Engineering, Central South University, Lushan South Road 932, Changsha, Hunan, 410083, China; ShenZhen Research Institute of Central South University, Yuanna Road 607, Shenzhen, Guangdong, 518057, China
| | - Houzhi Liu
- School of Chemistry and Chemical Engineering, Central South University, Lushan South Road 932, Changsha, Hunan, 410083, China
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Liu Y, Gong A, Qiu L, Li J, Li F. Effect of copper ion and soil humic acid on biodegradation of decabromodiphenyl ether (BDE-209) by Pseudomonas aeruginosa. Microbiologyopen 2017; 6. [PMID: 28105780 PMCID: PMC5458450 DOI: 10.1002/mbo3.439] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 11/19/2016] [Accepted: 12/06/2016] [Indexed: 12/15/2022] Open
Abstract
Pseudomonas aeruginosa is a good environmental microorganism capable of degrading decabromodiphenyl ether (BDE‐209). This paper studied the effect of Cu2+ and humic acid (HA) extracted from e‐waste contaminated soils on biodegradation of BDE‐209 by P. aeruginosa. The adsorption isotherms of Cu2+ on HA, the crude enzyme activity, cell surface morphology, and biodegradation pathway were also investigated. The results showed that BDE‐209 biodegradation by P. aeruginosa was inhibited at Cu2+ concentrations above 5 mg L−1, but exhibited the best effect at the condition of 40 mg L−1 Cu2+ + 3 g L−1 HA. At the condition of 40 mg L−1 Cu2+ + 3 g L−1 HA, 97.35 ± 2.33% of the initial BDE‐209 was degraded after 5 days, debromination efficiency was 72.14 ± 1.89%, crude enzyme activity reached the maximum of 0.519 ± 0.022U g−1 protein, cell surface of P. aeruginosa was smooth with normal short‐rod shapes, and biodegradation pathway mainly include debromination, hydroxylation, and cleavage of the diphenyl ether bond. It was suggested that soil HA could eliminate the toxic effect of high Cu2+ concentrations and biodegradation of BDE‐209 was improved by synergistic effect of HA and Cu2+.
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Affiliation(s)
- Yu Liu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China.,Institute of Biotechnology, Daqing Branch of Heilongjiang Academy of Science, Daqing, China.,Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing, Beijing, China
| | - Aijun Gong
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China.,Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing, Beijing, China
| | - Lina Qiu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China.,Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing, Beijing, China
| | - Jingrui Li
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China.,Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing, Beijing, China
| | - Fukai Li
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China.,Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing, Beijing, China
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41
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Lan T, Wang H, Liao J, Yang Y, Chai Z, Liu N, Wang D. Dynamics of Humic Acid and Its Interaction with Uranyl in the Presence of Hydrophobic Surface Implicated by Molecular Dynamics Simulations. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:11121-11128. [PMID: 27666876 DOI: 10.1021/acs.est.6b03583] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This work targeted a molecular level of understanding on the dynamics of humic acid (HA) and its interaction with uranyl in the presence of hydrophobic surface mimicked by a carbon nanotube (CNT), which also represents a potential intruder in the environment accompanying with the development of nanotechnology. In aqueous phase, uranyl and HA were observed to build close contact spontaneously, driven by electrostatic interaction, leading to a more compact conformation of HA. The presence of CNT unfolds HA via π-π interactions with the aromatic rings of HA without significant perturbation on the interaction strength between HA and uranyl. These results show that the hydrophilic uranyl and the hydrophobic CNT influence the folding behavior of HA in distinct manners, which represents two fundamental mechanisms that the folding behavior of HA may be modulated in the environment, that is, uranyl enhances the folding of HA via electrostatic interactions, whereas CNT impedes its spontaneous folding via van der Waals (vdW) interactions. The work also provides molecular level of evidence on the transformation of a hydrophobic surface into a hydrophilic one via noncovalent functionalization by HA, which in turn affects the migration of HA and the cations it binds to.
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Affiliation(s)
- Tu Lan
- Key Laboratory of Radiation Physics and Technology (Sichuan University), Ministry of Education; Institute of Nuclear Science and Technology, Sichuan University , Chengdu 610064, P.R.China
- CAS Key Laboratory of Nuclear Radiation and Nuclear Techniques, Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P.R.China
| | - Hui Wang
- CAS Key Laboratory of Nuclear Radiation and Nuclear Techniques, Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P.R.China
| | - Jiali Liao
- Key Laboratory of Radiation Physics and Technology (Sichuan University), Ministry of Education; Institute of Nuclear Science and Technology, Sichuan University , Chengdu 610064, P.R.China
| | - Yuanyou Yang
- Key Laboratory of Radiation Physics and Technology (Sichuan University), Ministry of Education; Institute of Nuclear Science and Technology, Sichuan University , Chengdu 610064, P.R.China
| | - Zhifang Chai
- CAS Key Laboratory of Nuclear Radiation and Nuclear Techniques, Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P.R.China
- School of Radiation Medicine and Interdisciplinary Sciences (RAD-X), Soochow University , Suzhou 215123, P.R.China
| | - Ning Liu
- Key Laboratory of Radiation Physics and Technology (Sichuan University), Ministry of Education; Institute of Nuclear Science and Technology, Sichuan University , Chengdu 610064, P.R.China
| | - Dongqi Wang
- CAS Key Laboratory of Nuclear Radiation and Nuclear Techniques, Multidisciplinary Initiative Center, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P.R.China
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43
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Removal of uranium(VI) and thorium(IV) by insolubilized humic acid originated from Azraq soil in Jordan. J Radioanal Nucl Chem 2016. [DOI: 10.1007/s10967-016-5031-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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44
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High-capacity sorption of U(VI) from aqueous solution using a bio-based oxidized polymeric material. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.02.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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45
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Prasetyo E, Toyoda K. Sol–gel synthesis of a humic acid-silica gel composite material as low-cost adsorbent for thorium and uranium removal. J Radioanal Nucl Chem 2016. [DOI: 10.1007/s10967-016-4861-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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Dolatyari L, Yaftian MR, Rostamnia S. Removal of uranium(VI) ions from aqueous solutions using Schiff base functionalized SBA-15 mesoporous silica materials. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 169:8-17. [PMID: 26720327 DOI: 10.1016/j.jenvman.2015.12.005] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 12/05/2015] [Accepted: 12/07/2015] [Indexed: 06/05/2023]
Abstract
Functionalized SBA-15 mesoporous silica particles, bearing N-propylsalicylaldimine and ethylenediaminepropylesalicylaldimine Schiff base ligands, abbreviated as SBA/SA and SBA/EnSA respectively, were prepared and characterized by FT-IR, elemental analysis, TGA, XRD, TEM and SEM techniques. The potentials of these adsorbents were examined by using them in solid phase extraction of U(VI) ions from water samples. It is shown that 20 mg of SBA/SA or SBA/EnSA can remove rapidly (∼15 min) and quantitatively uranium(VI) ions from 10 to 200 mL of water solutions (pH 4) containing 0.2 mg of the ions, at 25 °C. The adsorbed ions were stripped by 1 mL of dilute nitric acid solution (0.1 mol L(-1)). It means that the studied adsorbents are able to be used for removal and concentration of uranyl ions. This allowed achieving to a concentration factor of 200 for uranyl ions. The variation in the ionic strength in the range 0-1 mol L(-1) did not affect the extraction efficiencies of the adsorbents. The adsorbents showed selective separation of uranyl ions from Cd(2+), Co(2+), Ni(2+), Mn(2+), Cr(3+), Ba(2+), Fe(3+) and Eu(3+) ions. Thermodynamic investigations revealed that the adsorption of uranyl ions by the adsorbents was spontaneous and endothermic. The Langmuir model described suitably the adsorption isotherms. This model determined the maximum adsorption capacity of the adsorbents SBA/SA and SBA/EnSA as 54 and 105.3 mg uranyl/g adsorbent, respectively. The kinetics of the processes was interpreted by using Pseudo-second-order model.
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Affiliation(s)
- Leila Dolatyari
- Phase Equilibria Research Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, 45371-38791 Zanjan, Iran
| | - Mohammad Reza Yaftian
- Phase Equilibria Research Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, 45371-38791 Zanjan, Iran.
| | - Sadegh Rostamnia
- Organic and Nano Group, Department of Chemistry, Faculty of Science, University of Maragheh, 55181-83111 Maragheh, Iran
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47
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Xiao X, Xue J, Ding D, He B, He D, Tan L, Liao L. Adsorption of low concentration of uranium(VI) from aqueous solution by diethylenetriamine functionalized Cycas revoluta leaves. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4601-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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