ionic strengths: 0.001, 0.01 and 0.1 M; second solid/liquid ratio:0.55g/L; original equation in the study: »Al-OH + (UO2)3(OH)5<1+> = »Al-O-(UO2)3(OH)5 + H<1+> with logK = -15.8; formation constant in aqueous solution for 3UO2<2+> + 5H2O = (UO2)3(OH)5<1+> + 5H<1+>, logK = -15.55 (Grenthe 1992)