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Synthesis and Characterization of Magnesium/Aluminium Layered Double<br />

Hydroxide as Potential Adsorbent for Bromophenol Blue<br />

Shariena binti Shamsul Bahari<br />

Supervisor: Dr. Mazidah Bt Mamat<br />

Bachelor of Science (Chemical Sciences)<br />

School of Fundamental Science<br />

Layered double hydroxide (LDH) also known as anionic clay is one of the promising<br />

adsorbent for the removal of anionic pollutant from water system. In this study,<br />

Magnesium / aluminium LDH with Mg/Al molar ratio of 3 was synthesized via a coprecipitation<br />

method at constant pH 10. The as-synthesized sample was characterized<br />

using five different techniques which are Powder X-Ray Diffraction (PXRD), Fourier<br />

Transform Infrared (FTIR), Scanning Electron Microscopy (SEM), Thermogravimetric<br />

Analysis (TGA) and Carbon, Hydrogen, Nitrogen and Sulfur (CHNS) Elemental Analysis.<br />

The obtained sample was used as adsorbent for the removal of Bromophenol Blue dye<br />

from the aqueous solution. Adsorption experiment was carried out under different<br />

mass of LDH. The equilibrium isotherms for the adsorption of Bromophenol Blue dye<br />

on layered double hydroxide were analysed using selected isotherm models.<br />

454 | U M T U N D E R G R A D U A T E R E S E A R C H D A Y 2018

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