Paper Details

Liquid–liquid extraction is an economical, efficient, and environment-friendly benign method for theseparation of dilute solutions, including carboxylic acids, amino acids, amines, phenols, etc. This process of extraction isattractive if an adequate solvent is used, which shows high selectivity and efficiency, does not affect the thermal stabilityof products, and requires low energy consumption. The carboxylic acid especially phthalic acid and citric acid is mainlyoccurs in the effluent streams from pharmaceutical, paints and food industries. In present work, removal of Phthalic acidand citric acid from aqueous phase using liquid-liquid extraction has been investigated. Tri-butyl phosphate (TBP) andTri-octyl amine (TOA) and kerosene/ 1-Dodecanol were used as extractant and diluents for the experiments. Effect ofseveral parameters such as feed concentration, extractant concentration, and diluents concentration etc. has beenstudied. The effect of initial concentration of phthalic acid in aqueous feed was studied and the results showed that theextraction and thereby KD values were found to be increased with increase in initial feed concentration. Effect ofdifferent organic extractants on extraction performance of citric acid was studied and it showed that the extractionperformance was higher with the extractant TOA /kerosene as compared to TBP /kerosene and TBP/1-Dodeacanol.

Ronit S. Sakpal, Rohit S. Satpute, Pranay A. Patil, Sona R. Moharir, M.A.Suryawanshi, “Study on Extraction of Carboxylic Acid Using Solvent Extraction”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 4, pp. 1078-1085, April 2017.