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25 Pages • Essays / Projects • Year Uploaded: 2021
Liquid-liquid extraction is one of the separation technology used in industries. This process is quite different with distillation because it focuses on relative solubility of the species rather than volatility. Usually, extraction is more preferable than distillation for separation application that is not cost efficient and applicable for distillation. This experiment was carried out to determine the distribution coefficient and mass transfer coefficient of LLE. The sample collected from extraction equipment, namely raffinate, extract and feed were titrated with sodium hydroxide with different concentration. An indicator, phenolphthalein were added into the sample in order to detect alkaline ion. The sample is titrated until the solution turns light pink. The amount of 0.025M sodium hydroxide needed to turn the colourless feed, extract and raffinate solution to light pink were 253.8 mL, 52 mL and 4 mL respectively. While for 0.1M sodium hydroxide, the samples need 81.5 mL, 15.9 mL and 2.2 mL in the same order as mentioned previously. The mass transfer coefficients in 0.025M NaOH are 6.1402x10-3 m/min and 6.1632x10-3 m/min for K value 1.9272 and 1.8415 respectively. Meanwhile, for 0.1M NaOH, the mass transfer coefficients are 5.8451x10-3 m/min and 5.8620x10-3 m/min for K value 1.9272 and 1.8415 respectively. As the concentration of sodium hydroxide, NaOH solution and the distribution coefficient, K values increases, the mass transfer coefficient of propionic acid will decreases. The experiment is considered successful since all the objectives are successfully achieved. Turnitin : Percentage Similarity (18%)
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