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Sobczyk M, Cwanek A, Łokas E, Nguyen Dinh C, Marzec M, Wróbel P, Bajda T. Elucidating uranium interactions with synthetic Na-P1 zeolite/Ca 2+-substituted alginate composite granules through batch and spectroscopic studies: Emphasizing the significance of ion exchange and complexation. Environ Pollut 2024; 343:123184. [PMID: 38142030 DOI: 10.1016/j.envpol.2023.123184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/03/2023] [Accepted: 12/16/2023] [Indexed: 12/25/2023]
Abstract
Uranium, a key member of the actinides series, is radioactive and may cause severe environmental hazards once discharged into the water due to high toxicity. Removal of uranium via adsorption by applying tailored, functional adsorbents is at the forefront of tackling such pollution. Here, we report the optimized functionalization of the powder coal fly-ash (CFA) derived Na-P1 synthetic zeolite to the form of granules by employing the biodegradable polymer-calcium alginate (CA) and their application to remove aqueous U. The optimized synthesis showed that granules are formed at the CA concentration equals to 0.5 % wt., and that application of 1% wt. solution renders the most effective U scavengers. The maximum U adsorption capacity (qmax) increases significantly after CA modification from 44.48 mgU/g for native, powder Na-P1 zeolite to 62.53 mg U/g and 76.70 mg U/g for 0.5 % wt. and 1 % wt. CA respectively. The U adsorption follows the Radlich-Peterson isotherm model, being the highest at acidic pH (pHeq∼4). The U adsorption kinetics reveals swift U uptake, reaching equilibrium after 2h for 1 % ZACB and 3 h for 0.5 % wt. ZACB following the pseudo-second-order (PSO) kinetic model. SEM-EDXS investigation elucidates that adsorbed U occurs onto materials as an inhomogenous, well-dispersed, and micrometer-scale aggregate. Further, XPS and μ-XRF spectroscopies complementarily confirmed the hexavalent oxidation state of adsorbed U and its altered distribution on ZACBs with varying CA concentrations. U distribution was probed "in-situ" onto materials while correlations between the major elements (Al, Si, Ca, U) contributing to U scavenging were calculated and compared. Finally, a real-life coal mine wastewater (CMW) polluted by 238U and 228,226Ra was successfully purified, satisfying WHO guidelines after treatment using ZACBs. These findings offer new insights on successful yet optimized Na-P1 zeolite modification using biodegradable polymer (Ca2+-exchanged alginate) aimed at efficient U removal, displaying a near-zero environmental impact.
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Affiliation(s)
- M Sobczyk
- AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, al. A. Mickiewicza 30, 30-059, Krakow, Poland.
| | - A Cwanek
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342, Krakow, Poland
| | - E Łokas
- The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342, Krakow, Poland
| | - C Nguyen Dinh
- AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, al. A. Mickiewicza 30, 30-059, Krakow, Poland
| | - M Marzec
- Academic Centre for Materials and Nanotechnology (ACMiN), al. A. Mickiewicza 30, 30-059, Krakow, Poland
| | - P Wróbel
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, al. A. Mickiewicza 30, 30-059, Krakow, Poland
| | - T Bajda
- AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, al. A. Mickiewicza 30, 30-059, Krakow, Poland
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Zawierucha K, Porazinska DL, Ficetola GF, Ambrosini R, Baccolo G, Buda J, Ceballos JL, Devetter M, Dial R, Franzetti A, Fuglewicz U, Gielly L, Łokas E, Janko K, Novotna Jaromerska T, Kościński A, Kozłowska A, Ono M, Parnikoza I, Pittino F, Poniecka E, Sommers P, Schmidt SK, Shain D, Sikorska S, Uetake J, Takeuchi N. A hole in the nematosphere: tardigrades and rotifers dominate the cryoconite hole environment, whereas nematodes are missing. J Zool (1987) 2020. [DOI: 10.1111/jzo.12832] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- K. Zawierucha
- Department of Animal Taxonomy and Ecology Adam Mickiewicz University Poznań Poland
| | - D. L. Porazinska
- Department of Entomology and Nematology University of Florida Gainesville FL USA
| | - G. F. Ficetola
- Department of Environmental Science and Policy University of Milan Milan Italy
- Laboratoire d'Ecologie Alpine University Grenoble Alpes Univ. Savoie Mont Blanc CNRS LECA Grenoble France
| | - R. Ambrosini
- Department of Environmental Science and Policy University of Milan Milan Italy
| | - G. Baccolo
- Earth and Environmental Sciences Department University of Milano‐Bicocca Milan Italy
| | - J. Buda
- Department of Animal Taxonomy and Ecology Adam Mickiewicz University Poznań Poland
| | - J. L. Ceballos
- Institute of Hydrology, Meteorology and Environmental Studies IDEAM Bogota' Colombia
| | - M. Devetter
- Institute of soil Biology Biology Centre CAS České Budějovice Czech Republic
- Centre for Polar Ecology Faculty of Science University of South Bohemia České Budějovice Czech Republic
| | - R. Dial
- Institute of Culture and the Environment Alaska Pacific University Anchorage AK USA
| | - A. Franzetti
- Earth and Environmental Sciences Department University of Milano‐Bicocca Milan Italy
| | | | - L. Gielly
- Laboratoire d'Ecologie Alpine University Grenoble Alpes Univ. Savoie Mont Blanc CNRS LECA Grenoble France
| | - E. Łokas
- Department of Mass Spectroscopy Institute of Nuclear Physics Polish Academy of Sciences Kraków Poland
| | - K. Janko
- Laboratory of Fish Genetics Institute of Animal Physiology and Genetics Academy of Sciences of the Czech Republic Libechov Czech Republic
- Department of Biology and Ecology Faculty of Science University of Ostrava Ostrava Czech Republic
| | | | | | - A. Kozłowska
- Department of Animal Taxonomy and Ecology Adam Mickiewicz University Poznań Poland
| | - M. Ono
- Graduate School of Science and Engineering Chiba University Chiba Japan
| | - I. Parnikoza
- State Institution National Antarctic Center of Ministry of Education and Science of Ukraine Kyiv Ukraine
- Institute of Molecular Biology and Genetics National Academy of Sciences of Ukraine Kyiv Ukraine
| | - F. Pittino
- Earth and Environmental Sciences Department University of Milano‐Bicocca Milan Italy
| | - E. Poniecka
- School of Earth and Ocean Sciences Cardiff University Cardiff UK
| | - P. Sommers
- Ecology and Evolutionary Biology Department University of Colorado Boulder CO USA
| | - S. K. Schmidt
- Ecology and Evolutionary Biology Department University of Colorado Boulder CO USA
| | - D. Shain
- Biology Department Rutgers, The State University of New Jersey Camden NJ USA
| | - S. Sikorska
- Department of Animal Taxonomy and Ecology Adam Mickiewicz University Poznań Poland
| | - J. Uetake
- The Arctic Environment Research Center National Institute of Polar Research Tachikawa Japan
| | - N. Takeuchi
- Department of Earth Sciences Graduate School of Science Chiba University Chiba Japan
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Łokas E, Anczkiewicz R, Kierepko R, Mietelski JW. Variations in Pu isotopic composition in soils from the Spitsbergen (Norway): Three potential pollution sources of the Arctic region. Chemosphere 2017; 178:231-238. [PMID: 28324843 DOI: 10.1016/j.chemosphere.2017.03.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 03/09/2017] [Accepted: 03/12/2017] [Indexed: 06/06/2023]
Abstract
Although the polar regions have not been industrialised, numerous contaminants originating from human activity are detectable in the Arctic environment. This study reports evidence of 240Pu/239Pu atomic ratios in the tundra and initial soils from different parts of west and central Spitsbergen and recognizes possible environmental inputs of non-global fallout Pu. The average atomic ratio of 240Pu/239Pu equal to 0.179 (ranging between 0.129 and 0.201) in tundra soils are comparable to the characteristic ratio for global fallout (0.180). However, the 240Pu/239Pu atomic ratios in the initial soils from proglacial zone of glaciers change within wide range between 0.1281 and 0.234 with the mean value of 0.169. By combining alpha and mass spectrometry, the three-sources model was used to identify the Pu sources in initial soils. Our study indicated that the main source of Pu is nuclear tests and that a second source with lower Pu ratio may come from weapons grade Pu (unexploded weapons grade Pu ie. material from bomb which didn't undergo nuclear explosions for example for security tests). Additionally, we found samples with high 238Pu/239+240Pu activity ratios and with typical global fallout 240Pu/239Pu atomic ratios, which are associated with separate sources of pure 238Pu from the SNAP-9A satellite burn up in the atmosphere.
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Affiliation(s)
- E Łokas
- Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342, Krakow, Poland.
| | - R Anczkiewicz
- Institute of Geological Sciences, Polish Academy of Sciences, Senacka 1, 31-002, Krakow, Poland
| | - R Kierepko
- Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342, Krakow, Poland
| | - J W Mietelski
- Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342, Krakow, Poland
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