SURFACE COMPLEXATION MODELING OF URANIUM SORPTION DATA OBTAINED BY ISOTOPE EXCHANGE TECHNIQUES

被引：0
作者：
PAYNE, TE
WAITE, TD
机构：
来源：
RADIOCHIMICA ACTA | 1991年 / 52-3卷
关键词：
URANIUM; ADSORPTION; DESORPTION; MODELING; ISOTOPE EXCHANGE;
D O I：
暂无
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Uranyl sorption on samples from the vicinity of two uranium ore deposits was studied using a batch adsorption technique, and the results modelled using the surface complexation approach. The use of a synthetic groundwater spiked with an artificial uranium isotope (U-236) enabled adsorption to be measured together with desorption of the natural uranium in the samples. The amount of U-238 taking part in sorption interactions was estimated from the isotope exchange between U-236 and U-238. This "accessible" fraction comprised approximately 20 per cent of the uranium in the samples, and the use of this amount rather than the total uranium content was more realistic for modelling purposes. Although the surface complexation model was only applied to sorption on the amorphous iron component of these complex samples, it gave a reasonable description of experimental results.
引用
收藏
页码：487 / 493
页数：7
相关论文
共 36 条
  • [21] Surface complexation modeling of copper sorption by hydrous oxides of iron and aluminum
    Karthikeyan, KG
    Elliott, HA
    JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1999, 220 (01) : 88 - 95
  • [22] Surface complexation modeling of Yb(III) sorption and desorption on hematite and alumina
    Marmier, N
    Dumonceau, J
    Fromage, F
    JOURNAL OF CONTAMINANT HYDROLOGY, 1997, 26 (1-4) : 159 - 167
  • [23] Effect of DTPA on europium sorption onto quartz - Batch sorption experiments and surface complexation modeling
    Karimzadeh, Lotfollah
    Lippold, Holger
    Stockmann, Madlen
    Fischer, Cornelius
    CHEMOSPHERE, 2020, 239
  • [24] Analysis of Uranium Sorption in a Laboratory Column Experiment Using a Reactive Transport and Surface Complexation Model
    Baqer, Yousef
    Thornton, Steven
    Stewart, Douglas I.
    Norris, Simon
    Chen, XiaoHui
    TRANSPORT IN POROUS MEDIA, 2023, 149 (02) : 423 - 452
  • [25] Sorption Testing and Generalized Composite Surface Complexation Models for Determining Uranium Sorption Parameters at a Proposed In-situ Recovery Site
    Johnson, Raymond H.
    Truax, Ryan A.
    Lankford, David A.
    Stone, James J.
    Mine Water and the Environment, 2016, 35 (04) : 435 - 446
  • [26] Gallium sorption on montmorillonite and illite colloids: Experimental study and modelling by ionic exchange and surface complexation
    Benedicto, Ana
    Degueldre, Claude
    Missana, Tiziana
    APPLIED GEOCHEMISTRY, 2014, 40 : 43 - 50
  • [27] Modeling uranium(VI) adsorption onto montmorillonite under varying carbonate concentrations: A surface complexation model accounting for the spillover effect on surface potential
    Tournassat, C.
    Tinnacher, R. M.
    Grangeon, S.
    Davis, J. A.
    GEOCHIMICA ET COSMOCHIMICA ACTA, 2018, 220 : 291 - 308
  • [28] Surface complexation modeling of U(VI) sorption on TiO2 in the presence of fulvic acid
    Ye, Yuanlv
    Qiao, Yahua
    Wang, Liang
    Liu, Fudong
    Guo, Zhijun
    Wu, Wangsuo
    Zhang, Chunming
    RADIOCHIMICA ACTA, 2016, 104 (02) : 85 - 95
  • [29] Mechanism investigation and surface complexation modeling of zinc sorption on aluminum hydroxide in adsorption/coprecipitation processes
    Tokoro, Chiharu
    Sakakibara, Taisuke
    Suzuki, Shinya
    CHEMICAL ENGINEERING JOURNAL, 2015, 279 : 86 - 92
  • [30] Effect of glutamic acid on copper sorption onto kaolinite - Batch experiments and surface complexation modeling
    Karimzadeh, Lotfollah
    Barthen, Robert
    Stockmann, Madlen
    Gruendig, Marion
    Franke, Karsten
    Lippmann-Pipke, Johanna
    CHEMOSPHERE, 2017, 178 : 277 - 281
1234