Effect of pH, ionic strength and humic acid on the sorption of uranium(VI) to attapulgite

被引：110
作者：
Niu Zhiwei [1 ]
Fan Qiaohui [1 ]
Wang Wenhua [1 ]
Xu Junzheng [1 ]
Chen Lei [2 ]
Wu Wangsuo [1 ]
机构：
[1] Lanzhou Univ, Radiochem Lab, Lanzhou 730000, Gansu, Peoples R China
[2] Shandong Univ Technol, Sch Chem Engn, Zibo 255049, Shandong, Peoples R China
来源：
APPLIED RADIATION AND ISOTOPES | 2009年 / 67卷 / 09期
关键词：
Attapulgite; UO22+; Sorption; pH; Humic acid; FULVIC-ACID; SURFACE COMPLEXATION; AQUEOUS-SOLUTION; FOREIGN IONS; POWDER-DIFFRACTION; HUMIC/FULVIC ACID; MX-80; BENTONITE; NA-RECTORITE; MAYA-BLUE; TEMPERATURE;
D O I：
10.1016/j.apradiso.2009.03.113
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Attapulgite was investigated to remove UO22+ from aqueous solutions because of its strong sorption capacity. Herein, the attapulgite sample was characterized by Fourier transform infrared spectra (FTIR), X-ray diffraction (XRD) and acid-base titration in detail. Sorption of UO22+ on attapulgite was strongly dependent on pH values and ionic strength. The presence of humic acid enhanced the sorption of UO22+ on attapulgite obviously because of the strong complexation of humic acid (HA) with UO22+ on attapulgite surface. Sorption of UO22+ on attapulgite was mainly dominated by ion-exchange or outer-sphere complexation at low pH values, and by inner-sphere complexation at high pH values. The results indicated that attapulgite was a suitable material for the preconcentration and solidification of UO22+ from large volume of solutions because of its negative surface charge and large surface areas. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1582 / 1590
页数：9
相关论文
共 50 条
  • [41] Effects of pH, ionic strength, temperature, and humic acid on Eu(III) sorption onto iron oxides
    Li, Ping
    Fan, Qiao-hui
    Pan, Duo-qiang
    Liu, Sheng-ping
    Wu, Wang-suo
    [J]. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2011, 289 (03) : 757 - 764
  • [42] Uptake properties of Eu(III) on Na-attapulgite as a function of pH, ionic strength and temperature
    Wang Mingming
    Xie Hongqin
    Tan Liqiang
    Qiu Jun
    Tao Xingquan
    Wu Cuiping
    [J]. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2012, 292 (02) : 763 - 770
  • [43] Effect of pH, ionic strength and fulvic acid on the sorption and desorption of cobalt to bentonite
    Yu, SM
    Ren, AP
    Chen, CL
    Chen, YX
    Wang, X
    [J]. APPLIED RADIATION AND ISOTOPES, 2006, 64 (04) : 455 - 461
  • [44] Effect of contact time, pH, humic acid and temperature on the sorption of radionuclide Am(III) onto attapulgite
    Weigang Du
    Xuemei Liu
    Liqiang Tan
    [J]. Journal of Radioanalytical and Nuclear Chemistry, 2012, 292 : 1173 - 1179
  • [45] Sorption of Th(IV) on Na-bentonite: Effects of pH, ionic strength, humic substances and temperature
    Pan, Duo-qiang
    Fan, Qiao-hui
    Li, Ping
    Liu, Sheng-ping
    Wu, Wang-suo
    [J]. CHEMICAL ENGINEERING JOURNAL, 2011, 172 (2-3) : 898 - 905
  • [46] Effect of pH, ionic strength, fulvic acid and humic acid on sorption of Th(IV) on Na-rectorite
    P. Chang
    S. Yu
    T. Chen
    A. Ren
    C. Chen
    X. Wang
    [J]. Journal of Radioanalytical and Nuclear Chemistry, 2007, 274 : 153 - 160
  • [47] Effect of pH, ionic strength, foreign ions, fulvic acid and temperature on 109Cd(II) sorption to γ-Al2O3
    Dong, Yunhui
    Liu, Zhengjie
    Li, Yueyun
    Chen, Lei
    Zhang, Zengchao
    [J]. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2012, 292 (02) : 619 - 627
  • [48] Sorption of Th(IV) from aqueous solution to GMZ bentonite: effect of pH, ionic strength, fulvic acid and electrolyte ions
    Song, Xiaoping
    Wang, Yajie
    Cai, Jingjing
    [J]. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2013, 295 (02) : 991 - 1000
  • [49] Effect of pH, ionic strength and temperature on sorption of Pb(II) on NKF-6 zeolite studied by batch technique
    Yang, Xin
    Yang, Shubing
    Yang, Shitong
    Hu, Jun
    Tan, Xiaoli
    Wang, Xiangke
    [J]. CHEMICAL ENGINEERING JOURNAL, 2011, 168 (01) : 86 - 93
  • [50] Sorption of U(VI) on goethite: Effects of pH, ionic strength, phosphate, carbonate and fulvic acid
    Guo, Zhijun
    Li, Yan
    Wu, Wangsuo
    [J]. APPLIED RADIATION AND ISOTOPES, 2009, 67 (06) : 996 - 1000
12345