Radiation attenuation ability of bentonite clay enriched with eggshell as recyclable waste for a physical rradiation barrier

Bani-Ahmad, Mo'men Mohammad; Azman, Nurul Zahirah Noor; Jamaluddin, Nur Zahidah Jasmine; Al-Marri, Hana Mohammed; Alshipli, Marwan

doi:10.1016/j.radphyschem.2022.110484

Cited by 5 publications

(3 citation statements)

References 30 publications

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“…5. NIST XCOM software has been used to estimate the theoretical values of mass attenuation coefficient [13][14][15][16][17][18][19][20] . The mass attenuation coefficient is a crucial parameter in the field of gamma ray shielding materials [21][22][23] .…”

Section: Figure 4 Density and Molar Volume Vs Mole Fraction Of Lead O...mentioning

confidence: 99%

استكشاف خصائص التوهين الصوتي وأشعة جاما داخل النظام الزجاجي K2O-PbO-SiO2

Kaundal

2024

Baghdad Sci.J

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تم إجراء فحوصات صوتية وأشعة جاما لنظام الزجاج K2O-PbO-SiO2 لاستكشاف بنيته وخصائص التوهين بأشعة جاما. أجريت دراسات صوتية لدراسة تأثير تركيز أكسيد الرصاص على توصيل الهيكل الزجاجي. تم تقدير الخصائص المرنة للحصول على معلومات تتعلق بأبعاد الشبكة وصلابةها. تم حساب معامل التوهين الشامل لأشعة جاما نظريًا وتجريبيًا عند قيم طاقة الفوتون 511 كيلو فولت، 662 كيلو فولت و1274.0 كيلو فولت. تم مقارنة القيم التجريبية لمعاملات توهين أشعة جاما بالقيم النظرية المحسوبة باستخدام برنامج NIST-XCOM. تمت مقارنة نتائج طبقة نصف القيمة (HVL) للزجاج المحضر مع خرسانة الفريت لاستكشاف نطاق الزجاج الذي يحتوي على الرصاص كمرشح مناسب لمواد الحماية من الإشعاع.

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Section: Figure 4 Density and Molar Volume Vs Mole Fraction Of Lead O...mentioning

confidence: 99%

استكشاف خصائص التوهين الصوتي وأشعة جاما داخل النظام الزجاجي K2O-PbO-SiO2

Kaundal

2024

Baghdad Sci.J

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“…Natural bentonite is derived from volcanic ash deposits formed as a result of volcanic eruptions and is naturally present at the nanometer scale. Furthermore, due to its high abundance and low cost, it is considered a good choice for this purpose [8,9,10]. In 2019, Hager et al conducted experimental research on natural bentonite clays found in El Mutalla Mountain in Egypt, which naturally exist at the nanometer scale, under three different pressure values of 50, 100, and 150 bars, against 662 keV, 1173 keV, and 1332 keV gamma radiation.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Particle Size of Polyvinyl Alcohol/Bentonite Clay Mixture on the Radiation Shielding: A Monte Carlo Study

Manici,

Algün,

Akçay

et al. 2024

Süleyman Demirel Üniversitesi Fen Edebiyat Fakültesi Fen Dergisi

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Due to the harmful effects of ionizing radiation, shielding has become a crucial topic for radiation protection. Finding effective, non-toxic and low-cost shielding materials is imperative in ensuring the safety of individuals exposed to ionizing radiation. Whether a material is effective in shielding against radiation depends on the linear attenuation coefficient. In this study, linear attenuation coefficients were calculated using the MCNPX code for energy values of 81 keV (Ba-133), 140 keV (Tc-99m), 662 keV (Cs-137), 1173 keV, and 1332 keV (Co-60) by incorporating Bentonite Clay (BC) nanoparticles and micro-sized particles as additives into a Polyvinyl Alcohol (PVA) matrix. BC particles with a density of 50% were added to the PVA matrix using LAT and U cards. Simulations were performed with a mono-energetic source emitting 107 particles and a narrow beam geometry, and the counts of particles with diameters of 50 nanometers and 50 micrometers were calculated using the F4 tally. When the results obtained from the simulation were compared, it was observed that as the diameters of the added particles decreased, their effectiveness in radiation shielding increased for each energy value. Among them, the 50 nm BC particles added at a rate of 50% in PVA showed the highest effect at 1332 keV, with a 9.5% increase compared to 50 µm BC particles.

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“…Thus, there is an urgent need to find sustainable radiation shielding material to protect humans and the environment from the destructive impact of radiation [ 5 , 6 ]. Bismuth oxide Bi 2 O 3 was selected in this study due to its higher atomic number and nontoxicity; furthermore, it is considered a high-density material suitable for radiation shielding and has been applied to various materials such as glass [ 7 , 8 ], rubber [ 9 , 10 ], and building materials [ 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Gamma Attenuation Features of White Cement Mortars Reinforced by Micro/Nano Bi2O3 Particles

et al. 2023

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This study aims to explore the radiation protection properties of white mortars based on white cement as a binder and Bi2O3 micro and nanoparticles in proportions of 15 and 30% by weight as replacement sand. The average particle size of micro- and nano-Bi2O3 was measured using a transmission electron microscope (TEM). The cross-sectional morphology and distribution of Bi2O3 within the samples can be obtained by scanning electron microscopy (SEM), showing that nanoscale Bi2O3 particles have a more homogeneous distribution within the samples than microscale Bi2O3 particles. The shielding parameters of the proposed mortars were measured using the HPGe detector at various γ-ray energies emitted by standard radioactive point sources 241Am, 133Ba, 60Co, 137Cs, and 152Eu. The experimental values of the prepared mortars’ mass attenuation coefficients (MAC) match well with those determined theoretically from the XCOM database. Other shielding parameters, including half value layer (HVL), tenth value layer (TVL), mean free path (MFP), effective electron density (Neff), effective atomic number (Zeff), equivalent atomic number (Zeq), and exposure buildup factor (EBF), were also determined at different photon energies to provide more shielding information about the penetration of gamma radiation into the selected mortars. The obtained results indicated that the sample containing 30% by weight of nano Bi2O3 has the largest attenuation coefficient value. Furthermore, the results show that the sample with a high concentration of Bi2O3 has the highest equivalent atomic numbers and the lowest HVL, TVL, MFP, and EBF values. Finally, it can be concluded that Bi2O3 nanoparticles have higher efficiency and protection compared to microparticles, especially at lower gamma-ray energies.

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Radiation attenuation ability of bentonite clay enriched with eggshell as recyclable waste for a physical rradiation barrier

Cited by 5 publications

References 30 publications

استكشاف خصائص التوهين الصوتي وأشعة جاما داخل النظام الزجاجي K2O-PbO-SiO2

استكشاف خصائص التوهين الصوتي وأشعة جاما داخل النظام الزجاجي K2O-PbO-SiO2

The Effect of Particle Size of Polyvinyl Alcohol/Bentonite Clay Mixture on the Radiation Shielding: A Monte Carlo Study

Gamma Attenuation Features of White Cement Mortars Reinforced by Micro/Nano Bi2O3 Particles

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