Sorptive Removal of Cesium-137 and Strontium-90 from Water by Unconventional Sorbents. I. Usage of Bauxite Wastes (Red Muds)

この論文にアクセスする

この論文をさがす

著者

    • APAK Resat
    • Department of Chemistry, Faculty of Engineering, Istanbul University
    • ATUN Gulten
    • Department of Chemistry, Faculty of Engineering, Istanbul University
    • GUCLU Kubilay
    • Department of Chemistry, Faculty of Engineering, Istanbul University
    • TUTEM Esma
    • Department of Chemistry, Faculty of Engineering, Istanbul University
    • KESKIN Gunes
    • Department of Chemistry, Faculty of Engineering, Istanbul University

抄録

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 <SUP>137</SUP>Cs uptake, while heat-treatment was detrimental to the -SOH surface sites responsible for high <SUP>90</SUP>Sr 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

  • Journal of nuclear science and technology  

    Journal of nuclear science and technology 32(10), 1008-1017, 1995-10-25 

    Atomic Energy Society of Japan

参考文献:  39件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10002073360
  • NII書誌ID(NCID)
    AA00703720
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00223131
  • データ提供元
    CJP書誌  J-STAGE 
ページトップへ