期刊文献+

放射性核素在氧化物、磷酸盐和黏土矿物表面吸附:热力学和微观结构认识 被引量:2

Adsorption of Radionuclides on Oxides,Phosphates and Clay Minerals: Studying on Thermodynamic and Micro-Speciation
在线阅读 下载PDF
导出
摘要 本文主要以放射性核素在氧化物、磷酸盐和黏土矿物表面上吸附研究为例,概括了放射性核素在固液界面上吸附行为研究的系统方法。主要分为以下7个步骤进行介绍:(1)吸附剂结构、形貌、拓扑性质的表征;(2)吸附剂表面电荷性质表征;(3)表面质子化和去质子化反应的平衡常数;(4)pH、离子强度、吸附质浓度和天然有机质等对放射性核素在固液界面吸附影响;(5)放射性核素在固液界面上的微观形态和空间结构等信息;(6)利用表面配位模型探讨放射性核素在固液界面的吸附机理;(7)采用先进光谱表征技术和量子计算技术对所得吸附机理进行分子或原子水平上的论证。 In this paper, the sorption of radionuclides on oxides, phosphates and clay minerals has been reviewed to clarify the different steps necessary to obtain reliable sorption data and tried to describe the usefulness of structural investigation at molecular level. The presentation mainly includes the following sections: (1) physicochemical characterization of sorbent^s structure and morphology; (2) the surface charge density of sorbent in aqueous solution; (3) the equilibrium constants of protonation and deprotonation on the sorbent^s surface; (4) the influences of pH, ionic strength and organic matters on the sorption behaviors of radionuclides~ (5) the speciation and structure of radionuclides at solid-water interface; (6) surface complexation model and its application in evaluating the sorption mechanism of radionuclides; (7) the proofs from advanced spectroscopy technologies in this field.
出处 《核化学与放射化学》 CAS CSCD 北大核心 2012年第3期129-141,共13页 Journal of Nuclear and Radiochemistry
基金 国防科工局高放废物处置专项基金资助项目 国家自然科学基金资助项目(20871062 J1030932) 教育部博士研究生学术新人奖 兰州大学中央高校基本科研业务费专项资金资助项目(lzujbky-2010-215) 国家同步辐射实验室教育部创新计划资助项目(20090137S)
关键词 放射性核素 表面吸附 热力学 吸附种态 radionuclides adsorption thermodynamic sorption speciation
  • 相关文献

参考文献28

  • 1Wang Y Q, Fan Q H, Li P, et al. The Sorption of Eu( II ) on Calareous Soil: Effects of pH, Ionic Strength, Temperature, Foreign Ions and Plumic Acid[J]. J Radioanal Nucl Ch, 2011, 287: 231- 237.
  • 2Fan Q, Shao D, Lu Y, et al. Effect of pH, Ionic Strength, Temperature and Humic Substances on the Sorption of Ni(II) to Na-Attapulgite[J]. Chem Eng J, 2009, 150(1)= 188-195.
  • 3Fan Q H, Li P, Chen Y F, et al. Preparation of Attapulgite/Iron Oxide Magnetic Composites andApplication in Removal U(V[) From Aqueous Solu- tion[J]. J Hazard Mat, 2011, 192(3).. 1 851- 1 859.
  • 4Zhao G X, Zhang H X, Fan Q H, et al. Sorption of Copper (II) Onto Super-Adsorbent of Bentonite- Polyacrylamide Composites [J] J Hazard Mat, 2010, 173(1-33: 661-668.
  • 5Chen C L, Wang X K, Nagatsu M. Europium Ad- sorption on Multiwall Carbon Nanotube/Iron Oxide Magnetic Composite in the Presence of Polyacrylic Acid[J]. Environ Sci Techno, 2009, 43: 2 362- 2 367.
  • 6Oonk S, Slomp C P, Huisman D J, et al. Geo- chemical and Mineralogical Investigation of Domes- tic Archaeological Soil Features at the Tiel-Pas- sewaaij Site, the Netherlands[J]. J Geochem Ex- plor, 2009, 101: 155-165.
  • 7Fan Q, Li Z, Zhao H, et al. Adsorption of Pb( 11 ) on Palygorskite From Aqueous Solution: Effects of pH, Ionic Strength and Temperature[J]. Appl Clay Sci, 2009, 45(3): 111-116.
  • 8Zhang Y Y, Zhao H G, Fan Q H, et al. Sorption of U( VI ) Onto a Decarbonated Calcareous Soil[J]. J Radioanal Nucl Ch, 2011, 288(2): 395-404.
  • 9Anderson M A, Rubin A J. Adsorption of Inorganic at Solid-Liquid Interface[M]. Ann Arbor, Michi- gan: Ann Arsor Sci, 1981, Charp. 1.
  • 10陶祖贻,杜金洲.氧化物/水界面上的表面络合模型[J].离子交换与吸附,1994,10(2):112-118. 被引量:7

二级参考文献54

  • 1王祥科,郑善良.荧光衰减光谱法研究Eu(Ⅲ)在氧化铝表面的化学形态[J].核化学与放射化学,2005,27(2):108-112. 被引量:6
  • 2丁国清,张茂林,吴王锁.几种有机物对Al_2O_3吸附Eu(Ⅲ)和Am(Ⅲ)的影响[J].核化学与放射化学,2006,28(4):240-243. 被引量:8
  • 3Xu D,Wang X K,Chen C L,et al.Influence of Soil Humic Acid and Fulvic Acid on Sorption of Thorium(Ⅳ) on MX-80 Bentonite[J].Radiochim Acta,2006,94:429-434.
  • 4Reiller P,Casanova F,Moulin V.Influence of Addition Order and Contact Time on Thorium(Ⅳ) Retention by Hematite in the Presence of Humic Acids[J].Environ Sci Technol,2005,39:1 641-1 648.
  • 5Murray H H.Traditional and New Applications for Kaolin,Smectite,and Palygorskite:A General Overview[J].Appl Clay Sci,2000,17:207-211.
  • 6Alvarez-Ayuso E,García-Sánchez A.Palygorskite as a Feasible Amendment to Stabilize Heavy Metal Polluted Soils[J].Environ Pollut,2003,125:337-344.
  • 7Gerstl Z,Bruno Y.Adsorption and Desorption of Parathion by Attapulgite as Affected by the Mineral Structure[J].J Agric Food Chem,1978,26:569-573.
  • 8Fan Q H,Wu W S,Song X P,et al.Effect of Humic Acid,Fulvic Acid,pH and Temperature on the Sorption-Desorption of Th(Ⅳ) on Attapulgite[J].Radiochim Acta,2008,96:159-165.
  • 9Cao E,Bryant R,Willianms D J A.Electrochemical Properties of Na-Palygorskite[J].J Colloids Interf Sci,1996,179:143-150.
  • 10Osthols E,Bruno J,Grenthe I.On the Influence of Carbonate on Mineral Dissolution:Ⅲ The Solubility of Microcrystalline ThO2 in CO2-H2O Media[J].Geochim Cosmochim Acta,1994,58:613-623.

共引文献35

同被引文献62

引证文献2

二级引证文献3

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部