Effect of solution pH and initial solute concentration of organic compound on the adsorption by Pentace triptera.

• Main Author: Nik Zaid, Abdul Malik
• Format: Final Year Project
• Language: English
• Published: Universiti Teknologi Petronas 2004
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://utpedia.utp.edu.my/7917/1/2004%20Bachelor%20-%20Effect%20Of%20Solution%20pH%20And%20Initial%20Solute%20Concentration%20Of%20Organic%20Compound%20On%20The.pdf; http://utpedia.utp.edu.my/7917/

The project is to examine the effect of solution pH and initial concentration on the adsorption of organic compound by Pentace triptera. In this project Pentace triptera is used as adsorbent to remove benzene and toluene in wastewater. Adsorption concept is applied in this project. Fix size of grinding Pentace tripera used as adsorbent and various of concentration and pH of benzene and toluene are prepared. Samples shake with adsorbent using rotary shaker. After adsorption, samples are tested by using UVvis spectrophotometer. Result show that the concentration of benzene and toluene after adsorption higher than before adsorption. First hypothesis was desorption of benzene and toluene occurs by Pentace triptera. Project continues by using Gas Chromatography Mass Spectrometer. Qualitative result show benzene and toluene concentration at different pH sample are zero. Separation of component sample has been show on chromatogram. Samples contain many components after adsorption based on peak appearance on chromatogram. Most of the samples we're found to contain carbamic acid. Hypothesis from GCMS result were the carcinogenic compound shown by benzene and toluene. Different between GCMS and UV-vis explaining the qualitative measurement by Uv-vis may contribute to error in measurement of benzene and toluene concentration. Benzene and toluene were adsorbed by pentace triptera and at the same time benzene and toluene extract and digest Pentace Triptera leaves. Leaves normally contain chlorophyll and many other organic compounds such as amine group. Carbamic acid is the component that identifies to be mostly extracted from Pentace triptera leaves where toluene gives more formation of carbamic acid in sample.