Abstract
The sorption and desorption isotherms of untreated calcareous soil and three treated soils to remove CaCO3, organic matter (OM) and both CaCO3 and OM were determined and analyzed with the Freundlich equation at pH 7.8, moderate concentrations of NpO2 + (~10-5mol/l), in the presence of 0.01 mol/l CaCl2 and under ambient aerobic conditions. The relative contribution of CaCO3 and OM to the neptunium(V) sorption on calcareous soil and the sorption/desorption hysteresis is discussed. The effects of adding fulvic acid (FA) and carbonate in to the solution on the sorption of neptunium(V) on the soils were also studied. The sorption and desorption characteristics of NpO2 +, Zn2+, Sr2+ and Cs+ on the soils are compared.
Similar content being viewed by others
References
J. Z. Du, W. M. Dong, X. K. Wang, Z. Y. Tao, J. Radioanal. Nucl. Chem., 203 (1996) 31.
J. Z. Du, W. M. Dong, X. K. Wang, Z. Y. Tao, H. Liu, J. Radioanal. Nucl. Chem., 231 (1998) 183.
W. M. Dong, Z. J. Guo, J. Z. Du, Z. Y. Tao, Appl. Radiation Isotopes, 54 (2001) 371.
G. Bidoglio, P. Offermann, A. Saltelli, Appl. Geochem., 2 (1987) 275.
K. H. Lieser, U. MÑnlenweg, Radiochim. Acta, 43 (1988) 27.
T. Tanaka, S. Muraoka, J. Radioanal. Nucl. Chem., 240 (1999) 177.
W. J. Li, Y. Q. Ding, Z. Y. Tao, J. Radioanal Nucl. Chem., 250 (2001) 497.
W. J. Weber Jr., in: Adsorption Technology: A Step-by-step Approach to Process Evaluation and Application, F. L. Slejko (Ed.), Marcel Dekker, New York, p. 10.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Weijuan, L., Zuyi, T. Sorption and desorption of neptunium(V) on calcareous soil and its solid components: A comparative study. Journal of Radioanalytical and Nuclear Chemistry 258, 659–664 (2003). https://doi.org/10.1023/B:JRNC.0000011765.90494.63
Issue Date:
DOI: https://doi.org/10.1023/B:JRNC.0000011765.90494.63