Sorptive Removal of Cesium-137 and Strontium-90 from Water by Unconventional Sorbenta. I. Usage of Bauxite Wastes (Red Muds).
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- APAK Resat
- Department of Chemistry, Faculty of Engineering, Istanbul University
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- ATUN Gulten
- Department of Chemistry, Faculty of Engineering, Istanbul University
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- GUCLU Kubilay
- Department of Chemistry, Faculty of Engineering, Istanbul University
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- TUTEM Esma
- Department of Chemistry, Faculty of Engineering, Istanbul University
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- KESKIN Gunes
- Department of Chemistry, Faculty of Engineering, Istanbul University
書誌事項
- タイトル別名
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- I. Usage of Bauxite Wastes (Red Muds)
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Bauxite wastes of alumina manufacture, i.e., red muds, have been tested for radiocesium and strontium removal from water. The red muds were water-washed, acid-, and heat-treated before usage to produce hydrous oxide like sorbents. Surface treatment of the sorbent was benefical for 137Cs uptake, while heat-treatment was detrimental to the -SOH surface sites responsible for high 90Sr affinity. Fractionation of the sorbent with respect to apparent grain size did not produce significant differences in the sorption efficiency. The distribution coefficients vs. equilibrium activity in solution showed a maximum with Cs, and a gradual decrease trend with Sr. The solution activity vs. adsorption data were fitted to B. E. T. (essentially types IV-V) isotherms for Cs and B. E. T.-Langmuir isotherms for Sr. Desorption, temperature-, pH-, and ionic strength-dependence tests revealed that the primary mode of sorption for both cations is specific adsorption while the secondary mode is ion exchange. A rise in pH favours the ion-exchange sorption of Sr while the specific adsorption of Cs is negatively affected. Competitive adsorption of an inert electrolyte, i.e., NaCl, severely hinders Cs sorption, while Sr sorption on water-washed red mud is not significantly affected.
収録刊行物
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- Journal of Nuclear Science and Technology(日本原子力学会英文論文誌)
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Journal of Nuclear Science and Technology(日本原子力学会英文論文誌) 32 (10), 1008-1017, 1995
一般社団法人 日本原子力学会
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詳細情報 詳細情報について
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- CRID
- 1390001204095314816
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- NII論文ID
- 10002073360
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- NII書誌ID
- AA00703720
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- COI
- 1:CAS:528:DyaK2MXpsValsrg%3D
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- ISSN
- 18811248
- 00223131
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- 本文言語コード
- en
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- データソース種別
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- JaLC
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