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Synthesis and Characterization of Bis-(Benzoyl-Thiourea) Derivatives and
As Chealating Agent of Heavy Metal in Waste Water
Low Chia Hui
Supervisor: Assoc.Prof Dr. Mohd Sukeri bin Mohd Yusof
Bachelor of Science (Chemical Sciences)
School of Fundamental Science
SEM image: Bis-(benzoylthiourea) derivative (a) before (b) after absorption of
copper ions.
Improper disposal of inorganic waste to the rivers is the main factor of water pollution,
due to rapid developing industrial such as electroplating process. Therefore,
development of chelating agent of heavy metal in waste water. Thioureas derivatives
are well known having good affinity toward heavy metal via thiono group (C=S) and
carbonyl group (C=O) make them applicable as heavy metal sensors. In this research,
four new Bis-(benzoyl-thiourea) derivatives were successfully synthesised. These
compounds were characterized using ( 1 H) and ( 13 C) Nuclear Magnetic Resonance
spectroscopies (NMR) and Single Crystal X-Ray Diffractometer. These Compounds
shown good thermal stability, without decomposition up to ca.140°C. This experiment,
in which heavy metal were removed using these Bis-(benzoyl-thiourea) derivatives in
aqueous solution. The maximum removal efficiency of Cu, Ni, Cd and Fe was
determined to be 31%, 59%, 100%, and 68% respectively. Bis-(benzoyl-thiourea)
derivatives act as ideal chemical sensor.
474 | 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