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Hassan R, Abo Eldahab HMM, Shehata FA, El-Reefy SA, Mohamed SA. Proficiency of some synthetic alginate derivatives for sequestration of Iodine-131 from radioactive liquid waste. ENVIRONMENTAL TECHNOLOGY 2024; 45:3202-3215. [PMID: 37248845 DOI: 10.1080/09593330.2023.2213447] [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: 01/11/2023] [Accepted: 03/30/2023] [Indexed: 05/31/2023]
Abstract
The current effort in environmental remediation is aimed at removing iodine-131 radionuclide from radioactive liquid waste produced by an Egyptian nuclear power plant using some synthesised alginate derivatives. Two different copolymers, namely sodium alginate poly (acrylic acid) (P1) and sodium alginate poly (acrylic acid-methacrylic acid) (P2), are prepared using gamma radiation. The ability of these polymers to remove 131I radionuclide as sorbents has been investigated. The synthesised polymers exhibit excellent adsorption performance for 131I ions, and the adsorption equilibrium requires only 30 min, which reveals that the sorption process is kinetically faster than most of the other materials reported previously. The removal percents for 131I radionuclide at a pH of 3.0 at room temperature on P1 and P2 are 77.7% and 84.2%, respectively. The sorption capacities of the two polymers demonstrate that P2 > P1, with capacities of 67.9 and 58.5 mg/g, respectively. Four linear kinetic models are investigated: pseudo-first order, pseudo-second order, Elovich, and Weber-Morris models. Regarding their calculated parameters, these models indicate that the adsorption process of I-ions on both P1 and P2 is controlled by chemisorption. Four equilibrium isotherm models (Redlich-Peterson, Langmuir, Freundlich, and Harkin-Jura) are investigated, revealing that the adsorption process is a monolayer and multilayer process on a heterogeneous surface.
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Affiliation(s)
- Reham Hassan
- Analytical Chemistry Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
| | - H M M Abo Eldahab
- Analytical Chemistry Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
| | - F A Shehata
- Analytical Chemistry Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
| | - S A El-Reefy
- Analytical Chemistry Department, Hot Laboratories Center, Atomic Energy Authority, Cairo, Egypt
| | - S A Mohamed
- Physical Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypy
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Phanthuwongpakdee J, Babel S. Unraveling the mechanism of iodate adsorption by anthocyanin-rich fruit waste as green adsorbents for Applications of radioactive iodine remediation in water environment. ENVIRONMENTAL RESEARCH 2024; 250:118502. [PMID: 38365049 DOI: 10.1016/j.envres.2024.118502] [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: 11/14/2023] [Revised: 02/12/2024] [Accepted: 02/14/2024] [Indexed: 02/18/2024]
Abstract
In aquatic settings, radioactive iodine from nuclear waste can exist as iodate (IO3-). This study explored the efficiency and mechanism of IO3- adsorption by minimally modified anthocyanin-based adsorbents. Pomegranate peels and mangosteen pericarps were selected from an initial screening test and could remove over 70% of 10 mg/L IO3-. The adsorbents yielded adsorption capacity (q) of 9.59 mg/g and 2.31 mg/g, respectively, at room temperature. At 5 °C, q values increased to 14.5 and 5.13 mg/g, respectively. Pomegranate peels showed superior performance, with approximately 4 times the anthocyanin content of mangosteen pericarps. Both adsorbents took 120 min to reach adsorption equilibrium, and no desorption was observed after 8 days (I-131 half-time). Confirmation of physisorption was indicated by the fit of the pseudo-first-order reaction model, negative entropy (exothermic), and negative activation energy (Arrhenius equation). IO3- inclusion was confirmed through adsorbent surface modifications in scanning electron microscope images, the increased iodine content post-adsorption in energy-dispersive X-ray spectroscopy analysis, and alterations in peaks corresponding to anthocyanin-related functional groups in Fourier transform infrared spectroscopy analysis. X-ray absorption near-edge spectroscopy at 4564.54 eV showed that iodine was retained in the form of IO3-. Through the computational analysis, electrostatic forces, hydrogen bonds, and π-halogen interactions were deduced as mechanisms of IO3- adsorption by anthocyanin-based adsorbents. Anthocyanin-rich fruit wastes emerged as sustainable materials for eliminating IO3- from water.
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Affiliation(s)
- Jakkapon Phanthuwongpakdee
- Faculty of Environment and Resource Studies, Mahidol University, 999 Phutthamonthon Sai 4 Road, Salaya, Phutthamonthon District, Nakhon Pathom 73170, Thailand
| | - Sandhya Babel
- School of Bio-Chemical Engineering and Technology, Sirindhorn International Institute of Technology (SIIT), Thammasat University, P.O Box 22, Pathum Thani 12121, Thailand.
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Sugita T, Mori M, Kozai N. Photocatalytic Unification of Iodine Species Using Platinum-loaded Titanium Dioxide. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Yu H, Zheng L, Zhang T, Ren J, Meng P. Highly TEMPO-oxidized cellulose for removal of ionic and complexed cadmium from a complicated water system. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:36575-36588. [PMID: 35064503 DOI: 10.1007/s11356-021-18222-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 12/15/2021] [Indexed: 06/14/2023]
Abstract
TEMPO-NaDCC-oxidized cellulose (TNOCS) with a large surface area and an abundance of carboxyl groups was used to remove heavy metal ions (Cd, Cu, and Pb) and their organic acid complexes [HM-OAs] (OAs, i.e., citric acid (CA) and propionic acid (PA)), and then reveal their adsorption behaviors. Taking Cd and CA as examples, the results showed that some of Cd ions were first adsorbed onto TNOCS, and then, the existence of [Cd-CA-] complexes formed a coordinated structure with preloaded Cd ions to serve as a bridge for combining TNOCS and [Cd-CA]. The maximum adsorption capacities of TNOCS for Cd and Cd-CA were 16.50 and 22.15 mg/g, respectively. Moreover, adsorption energies and molecular orbital distributions indicated that the adsorption capacity of TNOCS for [Cd-CA] was better than that for Cd alone. TNOCS can maintain greater than 90% adsorption capacity in five times regeneration experiments using EDTA, indicating that it is very efficient and stable. In addition, the electron density, deformation charge, and Mulliken charge distribution were confirmed that the electron transfer direction was from carboxyl groups to cadmium, whether it was cadmium ions or complexed cadmium.
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Affiliation(s)
- Huajian Yu
- School of Environment, Guangzhou Higher Education Mega Center, South China Normal University, Guangzhou, 510006, People's Republic of China
| | - Liuchun Zheng
- School of Environment, Guangzhou Higher Education Mega Center, South China Normal University, Guangzhou, 510006, People's Republic of China.
- Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, People's Republic of China.
| | - Tao Zhang
- School of Environment, Guangzhou Higher Education Mega Center, South China Normal University, Guangzhou, 510006, People's Republic of China
| | - Jingjing Ren
- School of Environment, Guangzhou Higher Education Mega Center, South China Normal University, Guangzhou, 510006, People's Republic of China
| | - Peipei Meng
- College of Environment, Jinan University, Guangzhou, 510632, People's Republic of China
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Yang J, Tai W, Wu F, Shi K, Jia T, Su Y, Liu T, Mocilac P, Hou X, Chen X. Enhanced removal of radioactive iodine anions from wastewater using modified bentonite: Experimental and theoretical study. CHEMOSPHERE 2022; 292:133401. [PMID: 34953880 DOI: 10.1016/j.chemosphere.2021.133401] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/12/2021] [Accepted: 12/21/2021] [Indexed: 06/14/2023]
Abstract
Efficient and cost-effective removal of radioactive iodine anions from contaminated water has become a crucial task and a great challenge for waste treatment and environmental remediation. Herein, we present hexadecylpyridinium chloride monohydrate modified bentonite (HDPy-bent) for the efficient and selective removal of iodine anions (I- and IO3-) from contaminated water. Batch experiments showed that HDPy-bent could remove more than 95% of I- and IO3- within 10 min, and had maximum I- and IO3- adsorption capacities of 80.0 and 50.2 mg/g, respectively. Competitive experiments indicated that HDPy-bent exhibited excellent I- and IO3- selectivity in the excessive presence of common concomitant anions including PO43-, SO42-, HCO3-, NO3-, Cl- (maximum mole ratio of anions vs iodine anions was ∼50,000). An anion exchange mechanism was proposed for the selective adsorption of iodine anions. Optimal adsorption structure of HDPy+/I- (IO3-) at atomic level and driving forces of the I- (IO3-) adsorption were calculated by density functional theory (DFT) simulations. Moreover, the good durability and reusability of the HDPy-bent has been demonstrated with 5 adsorption-desorption cycles. Dynamic column experiment also demonstrated that HDPy-bent exhibited excellent removal and fractional recovery capabilities towards I- and IO3- from simulated groundwater and environmental water samples. In conclusion, this work presents a promising adsorbent material for the decontamination of radioactive iodine anions from wastewater on a large scale.
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Affiliation(s)
- Junqiang Yang
- Frontier Science Center for Rare Isotopes, Lanzhou University, 730000, Lanzhou, PR China; School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, PR China
| | - Wenya Tai
- School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, PR China
| | - Fei Wu
- Frontier Science Center for Rare Isotopes, Lanzhou University, 730000, Lanzhou, PR China
| | - Keliang Shi
- Frontier Science Center for Rare Isotopes, Lanzhou University, 730000, Lanzhou, PR China; School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, PR China; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, 730000, Lanzhou, PR China.
| | - Tianyi Jia
- School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, PR China
| | - Yin Su
- School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, PR China
| | - Tonghuan Liu
- Frontier Science Center for Rare Isotopes, Lanzhou University, 730000, Lanzhou, PR China; School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, PR China; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, 730000, Lanzhou, PR China
| | - Pavle Mocilac
- Frontier Science Center for Rare Isotopes, Lanzhou University, 730000, Lanzhou, PR China; School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, PR China
| | - Xiaolin Hou
- Frontier Science Center for Rare Isotopes, Lanzhou University, 730000, Lanzhou, PR China; School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, PR China
| | - Ximeng Chen
- Frontier Science Center for Rare Isotopes, Lanzhou University, 730000, Lanzhou, PR China; School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, PR China; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, 730000, Lanzhou, PR China
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Comprehensive comparisons of iodate adsorption onto corn stalk hydrothermal and pyrolytic biochar. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07874-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Yu H, Zheng L, Zhang T, Ren J, Cheng W, Zhang L, Meng P. Adsorption behavior of Cd (II) on TEMPO-oxidized cellulose in inorganic/ organic complex systems. ENVIRONMENTAL RESEARCH 2021; 195:110848. [PMID: 33587945 DOI: 10.1016/j.envres.2021.110848] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 01/29/2021] [Accepted: 02/02/2021] [Indexed: 06/12/2023]
Abstract
2,2,6,6-Tetramethylpiperidine-1-oxyl (TEMPO) was oxidized to produce TEMPO-oxidized cellulose (TOCS) with a nanofunctionalized surface and abundant carboxyl groups. In a batch experiment, three pH values (2, 5 and 7), three modes (single, binary and multiple systems), and systems with inorganic and organic materials were applied to explore the adsorption of coexisting metals and antibiotics on TOCS. The adsorption capacity of TOCS was substantially influenced by these factors, and the adsorption behaviors were also different in these systems. In general, the coordination behaviors and electrostatic attraction between Cd(II) and carboxyl groups were identified as the mechanism employed by the single system, while hydrophobic interactions, π interactions, hydrogen bonding and pore filling contributed to the adsorption of sulfonamides (SAs) on TOCS in the binary system. The bridging effect was determined to be the key mechanism; i.e., most Cd(II) and SAs in the form of [SA-Cd] complexes interacted with carboxyl groups, especially in the presence of high concentrations of Cd(II) and SAs. These adsorption behaviors were determined quantitatively by performing density functional theory (DFT) calculations. In addition, TOCS showed excellent adsorption capacity in a more complex interference system, and the maximum adsorption capacity was 5.83 mg/g.
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Affiliation(s)
- Huajian Yu
- School of Environment, South China Normal University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Liuchun Zheng
- School of Environment, South China Normal University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, PR China.
| | - Tao Zhang
- School of Environment, South China Normal University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Jingjing Ren
- School of Environment, South China Normal University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Wen Cheng
- School of Environment, South China Normal University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China.
| | - Lijuan Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, PR China
| | - Peipei Meng
- College of Environment, Jinan University, Guangzhou, 510632, PR China
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Marin NM, Dinu L, Stanculescu I, Cristea NI, Ionescu AI. Maize Stalk Material for On-Site Treatment of Highly Polluted Leachate and Mine Wastewater. MATERIALS (BASEL, SWITZERLAND) 2021; 14:956. [PMID: 33670485 PMCID: PMC7922871 DOI: 10.3390/ma14040956] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/02/2021] [Accepted: 02/16/2021] [Indexed: 11/20/2022]
Abstract
New research applications involving the use of cellulosic material derived from maize stalk for on-site treatment of leachate were evaluated for specific removal of Cu(II) and Fe(III) from real, highly polluted tailing pond and mine wastewater samples. Two major issues generated by anthropic mining activities were also tackled: wastewater metal content decrease to improve water quality and subsequently metal specific recovery, increasing the economic efficiency of metal production by using a green technology for residual management. Rapid saturation of the maize stalk mass determined in batch studies and the mine pilot experiment led to diminished metal concentrations in the second pilot experiment, where Cu(II) and Pb(II) from synthetic solutions were monitored in order to test biomaterial performances. In addition, in the second pilot experiment, maize stalk removed Pb(II) in the first 36 h, below the determination limit of the analytical method. The biomaterial bed in the column was saturated after 252 h of inflow solution. FTIR-ATR, TG and SEM techniques probed the interaction between maize stalk polar groups C=O, -OH, C-O and tailing water metallic ions by large FTIR band displacements, intensity decrease and shape changes, modification of thermal stability and by changes in the appearance of adsorbent microstructure images owing mainly to ion exchange mechanism.
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Affiliation(s)
- Nicoleta Mirela Marin
- National Research and Development Institute for Industrial Ecology ECOIND, Street Podu Dambovitei no. 71-73, District 6, 060652 Bucharest, Romania; (L.D.); (N.I.C.); (A.I.I.)
| | - Laurentiu Dinu
- National Research and Development Institute for Industrial Ecology ECOIND, Street Podu Dambovitei no. 71-73, District 6, 060652 Bucharest, Romania; (L.D.); (N.I.C.); (A.I.I.)
| | - Ioana Stanculescu
- Department of Physical Chemistry, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
- Horia Hulubei National Institute for Physics and Nuclear Engineering, Centre of Technological Irradiations IRASM, 30 Aleea Reactorului, 077125 Magurele, Romania
| | - Nicolae Ionut Cristea
- National Research and Development Institute for Industrial Ecology ECOIND, Street Podu Dambovitei no. 71-73, District 6, 060652 Bucharest, Romania; (L.D.); (N.I.C.); (A.I.I.)
| | - Alexandra Ioana Ionescu
- National Research and Development Institute for Industrial Ecology ECOIND, Street Podu Dambovitei no. 71-73, District 6, 060652 Bucharest, Romania; (L.D.); (N.I.C.); (A.I.I.)
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Da T, Chen T. Optimization of experimental factors on iodate adsorption: a case study of pomelo peel. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07312-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Liu P, Chen T, Zheng JG. Removal of iodate from aqueous solution using diatomite/nano titanium dioxide composite as adsorbent. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07161-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yang Y, Zheng L, Zhang T, Yu H, Zhan Y, Yang Y, Zeng H, Chen S, Peng D. Adsorption behavior and mechanism of sulfonamides on phosphonic chelating cellulose under different pH effects. BIORESOURCE TECHNOLOGY 2019; 288:121510. [PMID: 31150967 DOI: 10.1016/j.biortech.2019.121510] [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: 03/15/2019] [Revised: 05/14/2019] [Accepted: 05/17/2019] [Indexed: 06/09/2023]
Abstract
Phosphonic chelating fiber (PCCSF) as a novel adsorbent was produced through alkalization, etherification, amination and phosphonation, and then it was applied to adsorb sulfonamides (SAs), such as sulfadiazine (SD), sulfamonomethoxine (SMM) and sulfamethoxazole (SMZ). Specially, their adsorption behavior at different pH values was studied. As a result, PCCSF was provided with amino (NH2 or NH) and PO(OH)2 (PO) groups, and its equilibrium data were generally represented by both Langmuir and Freundlich models. Combining adsorbent-to-solution distribution coefficients (Kd) values and the effect of pH, the primary mechanism suggested that adsorption capacity of PCCSF was lower in strong acid and alkali solution, due to the electrostatic repulsion and hydrophobic interactions. By contrast, its adsorption affinity became more excellent at 3 < pH < 9 owing to the π-π electron-donor-acceptor (EDA) charge-assisted H-bond, Lewis acid-base interaction and charge-assisted H-bond (CAHB).
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Affiliation(s)
- Yuebei Yang
- School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Liuchun Zheng
- School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China.
| | - Tao Zhang
- School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Huajian Yu
- School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Yiru Zhan
- School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Yufang Yang
- School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Hao Zeng
- School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Shukai Chen
- School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Dan Peng
- Department of Transportation and Environment, Shenzhen Institute of Information Technology, Shenzhen 518172, China
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