Chemical durability and shielding study of borosilicate glass systems from solid municipal waste ash for radiation shielding applications

被引:9
作者
Hussein, E. M. Abou [1 ]
Shaban, S. E. [2 ]
Madbouly, A. M. [3 ]
机构
[1] Egyptian Atom Energy Author EAEA, Natl Ctr Radiat Res & Technol NCRRT, Radiat Chem Dept, Cairo, Egypt
[2] Egyptian Atom Energy Author EAEA, Nucl & Radiol Safety Res Ctr NRSRC, Safeguards & Phys Protect Dept, Cairo, Egypt
[3] Egyptian Atom Energy Author, Nucl & Radiol Safety Res Ctr NRSRC, Radiat Safety Dept, Cairo, Egypt
关键词
Waste management; Borosilicate glass; Radiation shielding parameters; Phy-X/PSD software; Chemical durability; SILICATE-GLASSES; ELECTRICAL-PROPERTIES; GAMMA-IRRADIATION; CERAMICS; OXIDE; VITRIFICATION;
D O I
10.1007/s11082-023-06180-y
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Based on municipal solid waste (MSW) ash as a main raw material, three novel borosilicate glasses with the composition of 70 waste + 20 borax + 10 Na2O + x ZrO2, where x = 0, 0.1 or 0.3 (wt. %),were prepared by the traditional melting-annealing technique. The prepared glasses were analyzed by EDX analysis, revealing the rich compositions of the prepared glasses correlated to the MSW ash used by 70 wt.% in preparing glasses. Some optical, chemical and radiation shielding properties of the prepared glasses were investigated. Either Zr addition or 80 kGy of gamma radiation revealed improvement of the glasses optical transmittance and chemical durability in neutral dis H2O, alkaline 0.1 N NaOH and acidic 0.1 N HCl leaching media for 70 days. Electron spin resonance (ESR) revealed the same spectra before and after irradiation, referring to the prevention of free radical formation by irradiation.The shielding parameters were measured by the experimental gamma spectroscopy (NaI detector) and the theoretical Phy-X/PSD software e.g., linear attenuation coefficients (LAC) and the findings revealed high unanimity among them at photon energies 0.662, 1.173 and 1.333 MeV. Another shielding parameters were also studied e.g., mass attenuation coefficients (MAC), effective atomic number (Zeff), effective electron density (Neff) and effective conductivity (Ceff). Presence of various metal oxides and the host trigonal BO3 and tetrahedral BO4 and SiO4 units, and ZrO2 provide the glasses compactness and effectual stability against ionizing irradiation. The prepared borosilicate glasses have highly strong and compacted structures that can inhibit the passage of radiation photons, because of the variety of many glass network formers, intermediates and modifiers present in the used waste ash. The results indicate the highly economic benefit of the prepared glasses, where the useless MSW ash are used mainly by 70 wt.% to produce effective borosilicate glass systems for promising radiation shielding purposes, especially 0.3 Zr borosilicate glass that has the best radiation shielding properties.
引用
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页数:24
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