Application of central composite design and rank annihilation factor analysis for optimization of mixed chelate of UO₂ ²⁺ complex with ammonium-N,N-tetramethylenedithiocarbamate and estimation of K_f value

Abstract

Abstract:The interaction between UO 2+ 2 and ammonium-N,N-tetramethylenedithiocarbamate (ATMDTC) was investigated experimentally by means of UV-Vis spectrophotometry. Central Composite Design (CCD) was applied to optimisation of reaction with 54 runs in duplicate. This design type was also used to developed mathematical model equation. Analysis of Variance (ANOVA) indicates that the terms of the model are significant within the 95% confident interval. Remarkably initial solution pH, initial AT-MDTC concentration, initial Cu 2+ concentration and temperature have effect on the reaction. Formation constant (log f ) was calculated as 2.917 by using Rank Annihilation Factor Analysis (RAFA).