ChemInform Abstract: EQUILIBRIUM STUDIES OF BERYLLIUM COMPLEXES, INTERACTION OF BERYLLIUM ION WITH SUCCINIC, DL‐MALIC AND D(+)‐, L(‐)‐, MESO‐TARTARIC ACIDS

Thermodynamic description of Be(II) solubility and hydrolysis in acidic to hyperalkaline NaCl and KCl solutions

“…(1,2) reported in several potentiometric studies (Kakihana and Sillen, 1956;Bertin et al, 1967;Schwarzenbach and Wenger, 1969;Kakihana and Maeda, 1970;Vanni et al, 1975;Brown et al, 1983;Bruno, 1987;Chinea et al, 1997). The reference book by Baes and Mesmer (1976) already supported that log *β �…”

“…Chemical, thermodynamic and activity models are derived on the basis of the solubility data collected in NaCl and KCl systems, and considering α-Be(OH) 2 (cr) as only solid phase controlling the solubility in all investigated systems. Previous studies (Mattock, 1954;Gilbert and Garrett, 1956;Kakihana and Sillen, 1956;Schindler and Garett, 1960;Olin, 1961, 1962;Schwarzenbach, 1962;Hietanen and Sillen, 1964;Bertin et al, 1967;Mesmer and Baes, 1967;Ohtaki, 1967;Ohtaki and Kato, 1967;Lanza and Carp� eni, 1968;Pâris and Gregoire, 1968;Schwarzenbach and Wenger, 1969;Kakihana and Maeda, 1970;Tsukuda et al, 1975;Vanni et al, 1975;Baes and Mesmer, 1976;Brown et al, 1983;Bruno, 1987;Bruno et al, 1987aBruno et al, , 1987bChinea et al, 1997) have shown the very complex speciation scheme of Be(II) in acidic to near-neutral pH conditions, including the formation of several monomeric and polynuclear species. Slope analysis in solubility studies provides direct insight on the charge of the species prevailing in the aqueous phase, but cannot distinguish between monomeric and polynuclear species of the same charge.…”

“…Although with a very heterogeneous distribution, Be(II) concentrations of up to 180 ppm and 3 ppm (�3.3⋅10 À 4 M) are found in solid and liquid wastes, respectively. Provided the high due to the higher solubility of Be(OH) 2 (s) and the insensitivity of the system to atmospheric CO 2 (g) (Mattock, 1954;Gilbert and Garrett, 1956;Kakihana and Sillen, 1956;Schindler and Garett, 1960;Olin, 1961, 1962;Schwarzenbach, 1962;Hietanen and Sillen, 1964;Bertin et al, 1967;Mesmer and Baes, 1967;Ohtaki, 1967;Ohtaki and Kato, 1967;Lanza and Carp� eni, 1968;Pâris and Gregoire, 1968;Schwarzenbach and Wenger, 1969;Kakihana and Maeda, 1970;Tsukuda et al, 1975;Vanni et al, 1975;Baes and Mesmer, 1976;Brown et al, 1983;Bruno, 1987;Bruno et al, 1987aBruno et al, , 1987bChinea et al, 1997). On the other hand, the number of experimental studies investigating the solubility and hydrolysis of beryllium is very limited in the alkaline to hyperalkaline conditions of relevance in the context of repositories for nuclear waste disposal (Table 1S, Supplementary Material) (Gilbert and Garrett, 1956;Alexander, 1963, 1965;Bruno et al, 1987a).…”