Enhanced Solubility and Separation of m/p – Aminonitrobenze Using different Hydrotropic Solution

Abstract

The aqueous solubilit ies of m/p - amino nitrobenzene in d ifferent concentrations (0-3.0 mo l/ L) of hydrotropes such as sodium benzoate, Sodiu m saccharin, dimethyl benzamide at different system temperatures (303K to 333K) were studied. The percentage extraction (%E) o f m- amino nitrobenzene fro m m/p - amino nitrobenzene mixture increases with an increase in hydrotrope concentration. A Minimu m Hydrotrope Concentration (MHC) in the aqueous phase was required to initiate the significance of the %E of m- amino nitrobenzene. Percentage extraction (%E) is the ratio of mo les of m - amino nitrobenzene extracted in presence and absence of a hydrotrope. The sensitivity and feasibility of the proposed process are examined by carrying out solubilization and equilibriu m precipitation experiments with the mixtu res of various compositions. The effectiveness of hydrotropes was measured in terms of Setschenow constant Ks and reported for all hydrotropes used in this study and determination of aggregation behavior of all hydrotropes were also studied. Cost effective and eco friendly techniques of removal of less soluble compoments.