Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Experimental determination of solubilities of di-calcium ethylenediaminetetraacetic acid hydrate [Ca2C10H12N2O8·7H2O(s)] in NaCl and MgCl2 solutions to high ionic strengths and its Pitzer model: Applications to geological disposal of nuclear waste and other low temperature environments

Journal Article · · Chemical Geology
In this study, solubility measurements on di-calcium ethylenediaminetetraacetic acid [Ca2C10H12N2O8(s), abbreviated as Ca2EDTA(s)] as a function of ionic strength are conducted in NaCl solutions up to I = 5.0 mol•kg–1 and in MgCl2 solutions up to I = 7.5 mol•kg–1, at room temperature (22.5 ± 0.5oC).
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1344455
Alternate ID(s):
OSTI ID: 1344466
OSTI ID: 1397635
Report Number(s):
SAND--2016-1275J; SAND2016-1275J; 619421
Journal Information:
Chemical Geology, Journal Name: Chemical Geology Journal Issue: C Vol. 454; ISSN 0009-2541
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (28)

An aqueous thermodynamic model for a high valence 4?2 electrolyte Th4+?SO 4 2? in the system Na+?K+?Li+?NH 4 + ?Th4+?SO 4 2? ?HSO 4 ? ?H2O to high concentration journal May 1992
Experimental determination of lead carbonate solubility at high ionic strengths: a Pitzer model description journal May 2015
An Aqueous Thermodynamic Model for the Solubility of Potassium Ferrate in Alkaline Solutions to High Ionic Strengths from 283.15 to 333.15 K journal July 2013
Removal of trace and major metals by soil washing with Na2EDTA and oxalate journal April 2009
Zur pharmakologischen Wirkung einiger anorganischorganischer Komplexverbindungen journal January 1957
The prediction of mineral solubilities in natural waters: The Na-K-Mg-Ca-H-Cl-SO4-OH-HCO3-CO3-CO2-H2O system to high ionic strengths at 25°C journal April 1984
New aspects of the reaction of silver(I) cations with the ethylenediaminetetraacetate ion journal December 1995
Speciation and fate of ethylenediaminetetraacetate (EDTA) in municipal wastewater treatment journal January 1996
The dependence of the acidity constants of silicic acid on NaCl concentration using Pitzer's equations journal February 1986
Determination of the solubility products of nitrilotriacetic acid, ethylenediaminetetraacetic acid and diethylenetriaminepentaacetic acid journal January 1999
Contribution to a utilitarian classification of gypsiferous soil journal December 1996
Experimental investigations of the reaction path in the MgO–CO2–H2O system in solutions with various ionic strengths, and their applications to nuclear waste isolation journal June 2008
Solubility of Fe2(OH)3Cl (pure-iron end-member of hibbingite) in NaCl and Na2SO4 brines journal January 2011
Recycling EDTA solutions used to remediate metal-polluted soils journal January 2005
Experimental determination of the solubility constant for magnesium chloride hydroxide hydrate (Mg3Cl(OH)5·4H2O, phase 5) at room temperature, and its importance to nuclear waste isolation in geological repositories in salt formations journal August 2010
Improved thermodynamic model for interaction of EDTA with trivalent actinides and lanthanide to ionic strength of 6.60m journal May 2014
The Ca2+–EDTA chelation as standard reaction to validate Isothermal Titration Calorimeter measurements (ITC) journal July 2016
Persistence and Potential Effects of Complex Organic Contaminant Mixtures in Wastewater-Impacted Streams journal February 2013
Thermodynamic Quantities Associated with the Interaction between Ethylenediaminetetraacetate and Alkaline Earth Ions journal April 1954
Additivity and the Physical Basis of Multivalency Effects:  A Thermodynamic Investigation of the Calcium EDTA Interaction journal June 2003
Solubility of Alkali and Alkali Earth Salts of Dihydrogen Ethylenediaminetetraacetate in Aqueous Solutions journal November 2002
Removal of Heavy Metals from Calcareous Contaminated Soils by EDTA Leaching journal January 1999
Selective Removal of Lead from Calcareous Polluted Soils using the Ca-EDTA Salt journal January 2000
Study on Optimal Conditions for Recovery of EDTA from Soil Washing Effluents journal November 2005
The aqueous geochemistry of thallium: speciation and solubility of thallium in low temperature systems journal January 2009
Extractability of Zinc, Cadmium, and Nickel in Soils Amended with edta journal January 1996
Experimental determination of solubilities of sodium tetraborate (borax) in NaCl solutions, and a thermodynamic model for the Na-B(OH)3-Cl-SO4 system to high-ionic strengths at 25  C journal November 2013
Waste Isolation Pilot Plant Actinide Source Term Test Program: Solubility Studies and Development of Modeling Parameters report April 2001

Cited By (1)

A Pitzer Model for Lead Oxide Solubilities in the Presence of Borate to High Ionic Strength journal November 2018