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Cendrowski K, Federowicz K, Techman M, Chougan M, El-Khayatt AM, Saudi HA, Kędzierski T, Mijowska E, Strzałkowski J, Sibera D, Abd Elrahman M, Sikora P. Functional Bi 2O 3/Gd 2O 3 Silica-Coated Structures for Improvement of Early Age and Radiation Shielding Performance of Cement Pastes. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:168. [PMID: 38251133 PMCID: PMC10819170 DOI: 10.3390/nano14020168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/23/2024]
Abstract
This study presents a new approach towards the production of sol-gel silica-coated Bi2O3/Gd2O3 cement additives towards the improvement of early mechanical performance and radiation attenuation. Two types of silica coatings, which varied in synthesis method and morphology, were used to coat Bi2O3/Gd2O3 structures and evaluated as a cement filler in Portland cement pastes. Isothermal calorimetry studies and early strength evaluations confirmed that both proposed coating types can overcome retarded cement hydration process, attributed to Bi2O3 presence, resulting in improved one day compressive strength by 300% and 251% (depending on coating method) when compared to paste containing pristine Bi2O3 and Gd2O3 particles. Moreover, depending on the type of chosen coating type, various rheological performances of cement pastes can be achieved. Thanks to the proposed combination of materials, both gamma-rays and slow neutron attenuation in cement pastes can be simultaneously improved. The introduction of silica coating resulted in an increment of the gamma-ray and neutron shielding thanks to the increased probability of radiation interaction. Along with the positive early age effects of the synthesized structures, the 28 day mechanical performance of cement pastes was not suppressed, and was found to be comparable to that of the control specimen. As an outcome, silica-coated structures can be successfully used in radiation-shielding cement-based composites, e.g. with demanding early age performances.
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Affiliation(s)
- Krzysztof Cendrowski
- Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-311 Szczecin, Poland; (K.C.); (K.F.); (M.T.); (J.S.); (D.S.)
| | - Karol Federowicz
- Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-311 Szczecin, Poland; (K.C.); (K.F.); (M.T.); (J.S.); (D.S.)
| | - Mateusz Techman
- Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-311 Szczecin, Poland; (K.C.); (K.F.); (M.T.); (J.S.); (D.S.)
| | - Mehdi Chougan
- Department of Civil and Environmental Engineering, Brunel University London, Uxbridge UB8 3PH, UK;
| | - Ahmed M. El-Khayatt
- Department of Physics, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11564, Saudi Arabia;
- Reactor Physics Department, Nuclear Research Centre, Atomic Energy Authority, Cairo 13759, Egypt
| | - H. A. Saudi
- Department of Physics, Faculty of Science, Al-Azhar University, Women Branch, Nasr City 11754, Egypt;
| | - Tomasz Kędzierski
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, 70-310 Szczecin, Poland; (T.K.); (E.M.)
| | - Ewa Mijowska
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, 70-310 Szczecin, Poland; (T.K.); (E.M.)
| | - Jarosław Strzałkowski
- Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-311 Szczecin, Poland; (K.C.); (K.F.); (M.T.); (J.S.); (D.S.)
| | - Daniel Sibera
- Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-311 Szczecin, Poland; (K.C.); (K.F.); (M.T.); (J.S.); (D.S.)
| | - Mohamed Abd Elrahman
- Structural Engineering Department, Mansoura University, Mansoura City 35516, Egypt;
| | - Pawel Sikora
- Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-311 Szczecin, Poland; (K.C.); (K.F.); (M.T.); (J.S.); (D.S.)
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Zayed AM, Metwally BS, Masoud MA, Mubarak MF, Shendy H, Abdelsatar MM, Petrounias P, Ragab AH, Hassan AA, Abdel Wahed MSM. Efficient dye removal from industrial wastewater using sustainable activated carbon and its polyamide nanocomposite derived from agricultural and industrial wastes in column systems. RSC Adv 2023; 13:24887-24898. [PMID: 37614786 PMCID: PMC10442598 DOI: 10.1039/d3ra03105e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 08/03/2023] [Indexed: 08/25/2023] Open
Abstract
Sugar beet crown (SBC) waste was employed to produce sustainable activated carbon (AC) by a thermo-chemical activation procedure using a fixed ratio of H3PO4/SBC (1 : 1 w/w ratio) at 550 °C/2 h. An activated carbon/polyamide nano-composite (AC/PA) was also prepared through the polymerization of the fabricated AC (90%) with polyamide (PA, 10%) synthetic textile waste using a proper dissolving agent at a specified w/w ratio with the employed polymer (formic acid/PA = 82/18%). Both AC and its derivative AC/PA were employed in the remediation of dyes from industrial wastewater in column systems, and their efficiencies were compared at various applied experimental conditions. The adsorption of the industrial dye waste (IDW) was a pH-, flow rate-, and bed thickness-controlled process by the regarded adsorbents. Kinetic studies confirmed the suitability of the Thomas equation over the Yoon and Nelson model in predicting the dynamic adsorption process of IDW by AC and AC/PA as was assured by the close agreement among the calculated and experimental uptake capacities of both adsorbents at the same applied flow rates, suggesting the chemisorption nature of IDW adsorption. Additionally, electrostatic attraction was the leading mechanism of IDW adsorption by AC and AC/PA composite with some advantages of the former over the latter.
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Affiliation(s)
- Ahmed M Zayed
- Applied Mineralogy and Water Research Lab (AMWRL), Geology Department, Faculty of Science, Beni-Suef University Beni Suef 62521 Egypt
| | - Bahaa S Metwally
- Applied Mineralogy and Water Research Lab (AMWRL), Geology Department, Faculty of Science, Beni-Suef University Beni Suef 62521 Egypt
- Textile Technology Department, Faculty of Technology and Education, Beni-Suef University Beni-Suef 62521 Egypt
| | - Mostafa A Masoud
- Applied Mineralogy and Water Research Lab (AMWRL), Geology Department, Faculty of Science, Beni-Suef University Beni Suef 62521 Egypt
| | - Mahmoud F Mubarak
- Petroleum Application Department, Egyptian Petroleum Research Institute 1 Ahmed El-Zomor Street, El-Zohour Region, Nasr City Cairo 11765 Egypt
| | - Hussain Shendy
- Applied Mineralogy and Water Research Lab (AMWRL), Geology Department, Faculty of Science, Beni-Suef University Beni Suef 62521 Egypt
| | - Mahmoud M Abdelsatar
- Applied Mineralogy and Water Research Lab (AMWRL), Geology Department, Faculty of Science, Beni-Suef University Beni Suef 62521 Egypt
| | - Petros Petrounias
- Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas (CERTH) 15125 Athens Greece
| | - Ahmed H Ragab
- Chemistry Department, College of Science, King Khalid University P.O. Box 9004 Abha 61413 Saudi Arabia
| | - Abeer A Hassan
- Chemistry Department, College of Science, King Khalid University P.O. Box 9004 Abha 61413 Saudi Arabia
| | - Mahmoud S M Abdel Wahed
- Applied Mineralogy and Water Research Lab (AMWRL), Geology Department, Faculty of Science, Beni-Suef University Beni Suef 62521 Egypt
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Kassem SM, Abdel Maksoud M, Ghobashy MM, El Sayed AM, Ebraheem S, Helal A, Ebaid Y. Novel flexible and lead-free gamma radiation shielding nanocomposites based on LDPE/SBR blend and BaWO4/B2O3 heterostructures. Radiat Phys Chem Oxf Engl 1993 2023. [DOI: 10.1016/j.radphyschem.2023.110953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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Cui W, Xiao M. Attenuating Radiation Exposure, Understanding the Mechanisms of Radiation-Induced Toxicity, and the Development of Radiation Countermeasures. TOXICS 2023; 11:306. [PMID: 37112533 PMCID: PMC10146653 DOI: 10.3390/toxics11040306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 03/23/2023] [Accepted: 03/23/2023] [Indexed: 06/19/2023]
Abstract
Radiation exposure is a complex issue that has both benefits and risks for human health [...].
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Affiliation(s)
- Wanchang Cui
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA
| | - Mang Xiao
- Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, MD 20889, USA
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