Sorption of Am(Ⅲ) on Na-bentonite:Effect of pH,ionic strength,temperature and humic acid

被引：2
|
作者：
Tao Yu~(a
机构：
来源：
ChineseChemicalLetters | 2012年 / 23卷 / 10期
基金：
美国国家科学基金会;
关键词：
Sorption; Am(Ⅲ); Bentonite; Humic acid;
D O I：
暂无
中图分类号：
O647.32 [化学吸附、物理吸附、等温吸附];
学科分类号：
070304 ; 081704 ;
摘要：
Sorption of Am（Ⅲ） on Na-bentonite as a function of contact time,pH,ionic strength,humic acid（HA） and temperature was investigated under ambient conditions.The results showed that the sorption was strongly dependent on pH and ionic strength. Am（Ⅲ） sorption can be described well by pseudo-second-order model.The presence of HA takes a positive effect at low pH;but a negative influence under high pH range.Enthalpy,entropy and Gibbs free energy（i.e.,△H;,△S;and△G;） calculated from sorption isotherms suggested that sorption process of Am（Ⅲ） was spontaneous and endothermic.
引用
收藏
页码：1189 / 1192
页数：4
相关论文
共 50 条
  • [21] Effect of pH, ionic strength and temperature on the sorption of radionickel on Na-montmorillonite
    Song, Xiaoping
    Wang, Suowei
    Chen, Lei
    Zhang, Maolian
    Dong, Yunhui
    APPLIED RADIATION AND ISOTOPES, 2009, 67 (06) : 1007 - 1012
  • [22] THE EFFECT OF pH ON THE SORPTION OF HUMIC ACIDS ON BENTONITE
    Gardosova, Katarina
    Urik, Martin
    Littera, Pavol
    Kolencik, Marek
    Sevc, Jaroslav
    FRESENIUS ENVIRONMENTAL BULLETIN, 2012, 21 (10): : 2977 - 2980
  • [23] Sorption and desorption of uranium(VI) on GMZ bentonite: effect of pH, ionic strength, foreign ions and humic substances
    Li, Shicheng
    Wang, Xiaoli
    Huang, Zhaoya
    Du, Liang
    Tan, Zhaoyi
    Fu, Yibei
    Wang, Xiaolin
    JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2016, 308 (03) : 877 - 886
  • [24] Sorption and desorption of uranium(VI) on GMZ bentonite: effect of pH, ionic strength, foreign ions and humic substances
    Shicheng Li
    Xiaoli Wang
    Zhaoya Huang
    Liang Du
    Zhaoyi Tan
    Yibei Fu
    Xiaolin Wang
    Journal of Radioanalytical and Nuclear Chemistry, 2016, 308 : 877 - 886
  • [25] Adsorption properties of Na-palygorskite for Cs sequestration: Effect of pH, ionic strength, humic acid and temperature
    Wei, Xiaoyan
    Sun, Yalou
    Pan, Duoqiang
    Niu, Zhiwei
    Xu, Zhen
    Jiang, Yunjie
    Wu, Wangsuo
    Li, Zhengbin
    Zhang, Li
    Fan, Qiaohui
    APPLIED CLAY SCIENCE, 2019, 183
  • [26] Influence of pH and ionic strength on Cd, Cu and Pb removal from water by adsorption in Na-bentonite
    Glatstein, Daniel A.
    Francisca, Franco M.
    APPLIED CLAY SCIENCE, 2015, 118 : 61 - 67
  • [27] Comments on "effect of pH, ionic strength and temperature on the sorption of radionickel on Na-montmorillonite"
    Ho, Yuh-Shan
    APPLIED RADIATION AND ISOTOPES, 2010, 68 (03) : 466 - 466
  • [28] Sorption of uranium(VI) on Na-attapulgite as a function of contact time, solid content, pH, ionic strength, temperature and humic acid
    Wubiao Zhu
    Zhengjie Liu
    Lei Chen
    Yunhui Dong
    Journal of Radioanalytical and Nuclear Chemistry, 2011, 289 : 781 - 788
  • [29] Sorption of uranium(VI) on Na-attapulgite as a function of contact time, solid content, pH, ionic strength, temperature and humic acid
    Zhu, Wubiao
    Liu, Zhengjie
    Chen, Lei
    Dong, Yunhui
    JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2011, 289 (03) : 781 - 788
  • [30] Influence of pH, soil humic acid, ionic strength and temperature on sorption of U(VI) onto attapulgite
    Tan, Liqiang
    Tan, Xiaoli
    Ren, Xuemei
    Mei, Huiyang
    Wang, Xiangke
    JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2018, 316 (03) : 981 - 991
12345