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Lab 7 Extraction Of Benzoic Acid

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Lab 7 Extraction Of Benzoic Acid
SEGi University
Extraction of Benzoic Acid by Balvinder Singh
(SCM 015 677)

Lab Partners:
1) Surrean Rao
2) Wong Kai Jun
3) Kanaga Luckshimi
4) Sasiskala Regal

ECE2332 Chemical Engineering Practices
Submitted: 1st October 2013

Supervisor:
Mr Ayman William

1.0 Abstract /summary
The purpose of this experiment to carry out in the lab is because to determined the capability to water droplet to carry out the liquid-liquid extraction. The studies is to determine the average time travel for each of the 10 out of 50 water droplets from top of the burette and to the bottom, the average volume of each of the water droplet and the volume of NaOH needed to neutralise the benzoic acid in aqueous solution. From the volume collected for 50 droplets surface area and radius is calculated for a droplet. The uses of the surfaces area and volume help to determined the concentration of benzoic acid in kerosene, mole of benzoic acid transferred, molar flux and mass transfer coefficient.

2.0 Theoretical background
The background of these studies is to estimate and understand the extraction of benzoic acid in kerosene into carrier medium water. The water droplets are added top of the burette containing kerosene with saturated benzoic acid. Each of the water droplet added is to passes through the kerosene the surface area of the droplet is play an important role for benzoic extraction. The molar flux of benzoic acid through the interface, NB (mol/m2.s) is given by: NB = KC (C*B – CB) where C*B is the concentration of benzoic acid in kerosene at saturation, CB is the concentration of benzoic acid in the aqueous phase and KC is the mass transfer coefficient. In order to determine KC the values of NB, C*B and CB must first be known. this studies will help us to defined how the differences in mass transfer surface area will affect the molar flux and mass transfer coefficient.
The burette was filled with kerosene saturated with


References: 1. Factor effect the extraction of benzoic acid with water droplet surface area (viewed on30/9/2013 4:09:37 PM) http://www.wikipedia.com/doc/51635023/Extraction-of-Benzoic-Acid/factor
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