Removal of citric acid from water by tributyl amine in octyl acetate: equilibrium and optimization by central composite design was written by Evlik, Tais;Asci, Yavuz Selim;Baylan, Nilay;Cehreli, Suheyla. And the article was included in Desalination and Water Treatment in 2020.Application of 112-14-1 The following contents are mentioned in the article:
Citric acid is one of the most important natural organic acid and extensively used in pharmaceuticals, foods, beverages, personal care products and mainly manufactured in the form of aqueous solutions by fermentation processes. In this study, the removal of citric acid from aqueous solutions was investigated by reactive extraction using an extractant namely tributylamine (TBA) in octyl acetate. The effects of different parameters on the removal such as initial extractant (TBA) concentration in octyl acetate (0-1.2 mol L-1), initial citric acid concentration (0.26-0.78 mol L-1) and, organic: aqueous phase ratio (0.2-1.0 volume/volume) were examined In order to evaluate the performance of reactive extraction operation, extraction efficiencies (E%), distribution coefficients (D) and loading factors (Z) were calculated by using the exptl. data. Furthermore, an optimization work was carried out for the reactive extraction process of citric acid. Response surface methodol. was used to optimize the effect of input variables on the reactive extraction In the variables examined, it was determined that the initial TBA concentration in the organic phase was the most effective parameter for the removal of citric acid from aqueous solutions The optimum extraction conditions were found to be initial TBA concentration in the organic phase of 1.2 mol L-1, the initial citric acid concentration of 0.26 mol L-1 and organic: aqueous phase ratio of 1.0 (volume/volume), resp. Under these optimum conditions, the predicted and exptl. extraction efficiencies were obtained as 86.31% and 82.44%, resp. The correlation coefficient values (R2 and adjusted R2 > 0.9) denoted that the obtained model equation represents the exptl. data adequately. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Application of 112-14-1).
Octyl acetate (cas: 112-14-1) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esters contain a carbonyl center, which gives rise to 120掳 C鈥揅鈥揙 and O鈥揅鈥揙 angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C鈥揙鈥揅 bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Application of 112-14-1
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics