Novel Bi-SBA-15 derived rice husk for iodine adsorption from off-gas stream

Nuclear energy is considered a reliable renewable energy source although it releases some radioactive wastes that are not friendly to the environment. This necessitates the development of such eco-friendly, abundant, and efficient materials to control these radioactive wastes, thus rendering this so...

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Main Authors: Ahmed Al-Mamoori, Israa Sh. Mohammed, Huda D. Abdul Kader, Abdullah Mohammed Al-sadoon, Hasan Sh. Majdi
Format: Article
Language:English
Published: Elsevier 2025-01-01
Series:Results in Chemistry
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Online Access:http://www.sciencedirect.com/science/article/pii/S2211715624006684
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author Ahmed Al-Mamoori
Israa Sh. Mohammed
Huda D. Abdul Kader
Abdullah Mohammed Al-sadoon
Hasan Sh. Majdi
author_facet Ahmed Al-Mamoori
Israa Sh. Mohammed
Huda D. Abdul Kader
Abdullah Mohammed Al-sadoon
Hasan Sh. Majdi
author_sort Ahmed Al-Mamoori
collection DOAJ
description Nuclear energy is considered a reliable renewable energy source although it releases some radioactive wastes that are not friendly to the environment. This necessitates the development of such eco-friendly, abundant, and efficient materials to control these radioactive wastes, thus rendering this sort of energy more sustainable. In this research, Bismuth-SBA-15 derived from rice husk waste material was synthesized and then evaluated for the adsorption of iodine (129I) that is disposed from nuclear waste off-gas stream. The optimum bismuth loading (20 wt. %Bi-SBA-15) exhibited as much as 3956 mg/g at 200 °C of iodine capture capacity which is 18.4-fold of the commercial silver-mordenite adsorbent material. This finding represents the highest value reported in the literature for bismuth-based adsorbent materials for gas phase adsorption. Three different temperatures (100, 150, and 200 °C) were performed for iodine capture and the material exhibited as high as 3291 and 3956 mg/g for 150, and 200 °C respectively which is close to the spent fuel waste temperature of ∼140 °C. The material durability was also tested under three consecutive adsorption-desorption cycles and attained 82 % of its initial cycle under iodine exposure for 18 h. The interaction of iodine with bismuth was in the form of the highly stable compound (BiOI) which is advantageous for further iodine immobilization process. The materials exhibited relatively stable iodine capture capability after three consecutive cycles. Further investigation was also performed to study the physiochemical characterization such as XRD, FT-IR, BET-PSD, SEM-EDX, TEM, XPS, and TA analysis. The current study suggests that Bismuth-SBA-15 derived from rice husk waste material could be a potential candidate for the adsorption of iodine (129I).
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spelling doaj-art-2a4682a1d90040da99bfa4d2c610b0362025-01-29T05:00:45ZengElsevierResults in Chemistry2211-71562025-01-0113101972Novel Bi-SBA-15 derived rice husk for iodine adsorption from off-gas streamAhmed Al-Mamoori0Israa Sh. Mohammed1Huda D. Abdul Kader2Abdullah Mohammed Al-sadoon3Hasan Sh. Majdi4Department of Chemical Engineering, College of Engineering, Al-Nahrain University, Jadriya, Baghdad 10072, Iraq; Corresponding author.Department of Chemical Engineering, College of Engineering, Al-Nahrain University, Jadriya, Baghdad 10072, IraqDepartment of Chemical Engineering, College of Engineering, Al-Nahrain University, Jadriya, Baghdad 10072, IraqDepartment of Chemical Engineering, College of Engineering, Al-Nahrain University, Jadriya, Baghdad 10072, IraqDepartment of Chemical Engineering and Petroleum Industries,College of Engineering and Technologies, Al-Mustaqbal University, Babylon 51001, Iraq; Al-Mustaqbal Center for Energy Research, Al-Mustaqbal University, Babylon 51001, IraqNuclear energy is considered a reliable renewable energy source although it releases some radioactive wastes that are not friendly to the environment. This necessitates the development of such eco-friendly, abundant, and efficient materials to control these radioactive wastes, thus rendering this sort of energy more sustainable. In this research, Bismuth-SBA-15 derived from rice husk waste material was synthesized and then evaluated for the adsorption of iodine (129I) that is disposed from nuclear waste off-gas stream. The optimum bismuth loading (20 wt. %Bi-SBA-15) exhibited as much as 3956 mg/g at 200 °C of iodine capture capacity which is 18.4-fold of the commercial silver-mordenite adsorbent material. This finding represents the highest value reported in the literature for bismuth-based adsorbent materials for gas phase adsorption. Three different temperatures (100, 150, and 200 °C) were performed for iodine capture and the material exhibited as high as 3291 and 3956 mg/g for 150, and 200 °C respectively which is close to the spent fuel waste temperature of ∼140 °C. The material durability was also tested under three consecutive adsorption-desorption cycles and attained 82 % of its initial cycle under iodine exposure for 18 h. The interaction of iodine with bismuth was in the form of the highly stable compound (BiOI) which is advantageous for further iodine immobilization process. The materials exhibited relatively stable iodine capture capability after three consecutive cycles. Further investigation was also performed to study the physiochemical characterization such as XRD, FT-IR, BET-PSD, SEM-EDX, TEM, XPS, and TA analysis. The current study suggests that Bismuth-SBA-15 derived from rice husk waste material could be a potential candidate for the adsorption of iodine (129I).http://www.sciencedirect.com/science/article/pii/S2211715624006684Iodine captureOff-gas streamSBA-15 derived from rice husk adsorbentBismuthHigh-temperature Iodine Gas Adsorption
spellingShingle Ahmed Al-Mamoori
Israa Sh. Mohammed
Huda D. Abdul Kader
Abdullah Mohammed Al-sadoon
Hasan Sh. Majdi
Novel Bi-SBA-15 derived rice husk for iodine adsorption from off-gas stream
Results in Chemistry
Iodine capture
Off-gas stream
SBA-15 derived from rice husk adsorbent
Bismuth
High-temperature Iodine Gas Adsorption
title Novel Bi-SBA-15 derived rice husk for iodine adsorption from off-gas stream
title_full Novel Bi-SBA-15 derived rice husk for iodine adsorption from off-gas stream
title_fullStr Novel Bi-SBA-15 derived rice husk for iodine adsorption from off-gas stream
title_full_unstemmed Novel Bi-SBA-15 derived rice husk for iodine adsorption from off-gas stream
title_short Novel Bi-SBA-15 derived rice husk for iodine adsorption from off-gas stream
title_sort novel bi sba 15 derived rice husk for iodine adsorption from off gas stream
topic Iodine capture
Off-gas stream
SBA-15 derived from rice husk adsorbent
Bismuth
High-temperature Iodine Gas Adsorption
url http://www.sciencedirect.com/science/article/pii/S2211715624006684
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