Structural, Optical and Radiation Shielding Properties of BaO-B2O3-Rice Husk Ash Glasses

Tuscharoen, S.; Kaewkhao, J.; Limsuwan, Pichet; Chewpraditkul, Weerapong

doi:10.1016/j.proeng.2012.02.005

Cited by 21 publications

(6 citation statements)

References 6 publications

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“…The value differences between the experimental and the theoretical results suggest systematic errors; these may be due to the nonstoichiometry ratio of the glass formula after melting at high temperature. The half-value layers of the glass samples with Bi 2 O 3 content were compared with serpentite concrete, ordinary concrete, chromite concrete and barite concrete at 662 keV [6,13]; the results are shown in Figure 2(b). It was found that at 35wt% of Bi 2 O 3 , the half-value layer of the glass samples was shorter than that of all the standard shielding concretes, indicating that the glass in the present study may be developed as radiation shielding material.…”

Section: Resultsmentioning

confidence: 99%

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Pb-free Radiation Shielding Glass Using Coal Fly Ash

et al. 2015

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Abstract. In this work, Pb-free shielding glass samples were prepared by the melt quenching technique using subbituminous fly ash (SFA) composed of xBi 2 O 3 : (60-x)B 2 O 3 : 10Na 2 O : 30SFA (where x = 10, 15, 20, 25, 30 and 35 by wt%). The samples were investigated for their physical and radiation shielding properties. The density and hardness were measured. The results showed that the density increased with the increase of Bi 2 O 3 content. The highest value of hardness was observed for glass sample with 30 wt% of Bi 2 O 3 concentration. The samples were investigated under 662 keV gamma ray and the results were compared with theoretical calculations. The values of the mass attenuation coefficient (µ m ), the atomic cross section (σ e ) and the effective atomic number (Z eff ) were found to increase with an increase of the Bi 2 O 3 concentration and were in good agreement with the theoretical calculations. The best results for the half-value layer (HVL) were observed in the sample with 35 wt% of Bi 2 O 3 concentration, better than the values of barite concrete. These results demonstrate the viability of using coal fly ash waste for radiation shielding glass without PbO in the glass matrices.

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Section: Resultsmentioning

confidence: 99%

“…An NaI(Tl) scintillation detector with 8% of energy resolution (at 662 keV) was used to detect the gamma-ray intensity [10]. Figure 1 Experimental setup for mass attenuation coefficient determination [11][12][13].…”

Section: Methodsmentioning

confidence: 99%

Pb-free Radiation Shielding Glass Using Coal Fly Ash

et al. 2015

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“…Glasses containing Bi 2 O 3 , BaO, and PbO have shown good radiation‐shielding capability because of their high mass attenuation coefficient and low value of half‐value layer parameter 220. Tuscharoen et al 221. studied the structural, optical, and radiation‐shielding properties of barium‐borate‐RHA glasses.…”

Section: Second Generation Agricultural Wastes and Their Usesmentioning

confidence: 99%

Biomass as a sustainable resource for value‐added modern materials: a review

Sharma

Kaur

Punj

et al. 2020

Biofuels Bioprod Bioref

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Over the past century, the world's population has increased greatly. The growth in the population has increased the global food demand, so the food sector has increased its production. As a result of the increased production and consumption, a huge amount of agro-food waste is being generated yearly. Rice husk, wheat straw, sugarcane bagasse, corn husk, peanut shell, eggshell, are just a few examples of agro-food wastes. As these agro-food wastes and their by-products are left unused and unattended, their amount is increasing globally. It is imperative to find ways to put these wastes to environmentally viable use. These wastes find direct uses in biofertilizers, mud houses, animal feed, biofuel, and heat generation in small-scale industries, etc. After heat generation, ashes are considered as a secondary by-product, which can be used as a sustainable and renewable resource for synthesizing value-added products for various applications. This article presents a review of the traditional and advanced methods of utilizing these wastes in household applications, animal feed, fertilizers, fuel generation, pyrolysis, and for the removal of toxic metals from polluted water. These secondary resources can also be used in construction materials and for the synthesis of glasses and glass-ceramics, which can be used in bioengineering, optical, and dielectric materials. Agrofood wastes can be used as resource materials to develop modern materials with better properties instead of using minerals. This not only reduces the environment-and management-related problem of the wastes but also provides a sustainable alternative way to produce cost-effective value-added materials for the benefit of society.

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“…The ashes produced vary in their composition according the different waste incinerated. Rice husk ash, produced in biomass power plants that use rice husk as fuel, has been used as a silica precursor since it contains around 85–90% of amorphous or crystalline silica depending on the combustion conditions . Sewage sludge fly ash, paper sludge ash, oil‐shale ash or meat and bone meal ashes feature a lower content of silica, but they contain significant amounts of P 2 O 5 (another glass forming oxide) and Al 2 O 3 (‘intermediate’ glass forming oxide, when combined with alkali or alkaline earth oxides).…”

Section: Inorganic Waste As Raw Materials For Glass‐based Productsmentioning

confidence: 99%

Recycling of inorganic waste in monolithic and cellular glass‐based materials for structural and functional applications

Rincón

Marangoni

Çetin

et al. 2016

J of Chemical Tech & Biotech

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The stabilization of inorganic waste of various nature and origin, in glasses, has been a key strategy for environmental protection for the last decades. When properly formulated, glasses may retain many inorganic contaminants permanently, but it must be acknowledged that some criticism remains, mainly concerning costs and energy use. As a consequence, the sustainability of vitrification largely relies on the conversion of waste glasses into new, usable and marketable glass‐based materials, in the form of monolithic and cellular glass‐ceramics. The effective conversion in turn depends on the simultaneous control of both starting materials and manufacturing processes. While silica‐rich waste favours the obtainment of glass, iron‐rich wastes affect the functionalities, influencing the porosity in cellular glass‐based materials as well as catalytic, magnetic, optical and electrical properties. Engineered formulations may lead to important reductions of processing times and temperatures, in the transformation of waste‐derived glasses into glass‐ceramics, or even bring interesting shortcuts. Direct sintering of wastes, combined with recycled glasses, as an example, has been proven as a valid low‐cost alternative for glass‐ceramic manufacturing, for wastes with limited hazardousness. The present paper is aimed at providing an up‐to‐date overview of the correlation between formulations, manufacturing technologies and properties of most recent waste‐derived, glass‐based materials. © 2016 The Authors. Journal of Chemical Technology & Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Structural, Optical and Radiation Shielding Properties of BaO-B2O3-Rice Husk Ash Glasses

Cited by 21 publications

References 6 publications

Pb-free Radiation Shielding Glass Using Coal Fly Ash

Pb-free Radiation Shielding Glass Using Coal Fly Ash

Biomass as a sustainable resource for value‐added modern materials: a review

Recycling of inorganic waste in monolithic and cellular glass‐based materials for structural and functional applications

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