SYNTHESIS AND CHARACTERIZATION ION IMPRINTED POLYMER BASED POLY(ETHYLENE TEREPHTHALATE)-DIVINYL BENZENE FOR ADSORPTION OF PB(II)

• Main Author: Triadhi, Untung
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/67080
• Institution: Institut Teknologi Bandung

A very rapid development of the industry makes information of technology and science has become very accessible in a very fast and easy way. However, rapid industrial growth also has negative impacts such as environmental pollution in almost parts of environment, soil, air, and water. The most hazardous industrial waste which frequently be a concern is the heavy metal cations. Lead (II), cadmium (II), nickel (II) are the example of heavy metal cations which produced along the industrial process nowadays. Lead (II) is one of heavy metal cations that are often become a major pollutant and very detrimental to health. Methods of lead (II) analysis which have been widely applied are liquid-liquid extraction, precipitation, solid phase extraction, and ion-exchange chromatography. Industrial waste in general have a very complex matrix which makes direct analysis of lead content is very difficult to attempt. Therefore, here required an analytical method which able to separate the metal cation lead (II) out of this complex system. Ion imprinted polymer (IIP) is one of the methods which being developed today. This method is based on solid phase extraction which makes use of polymer functionalization. Polymer functionalization is a polymer formation process which produce polymer with specific affinity to one species. In this study, have been successfully synthesized Pb(II) imprinted polymer (Pb-IP) through the polymerization of poly(ethylene terephthalate) crosslinked with divinyl benzene in the presence of Pb (II) - 4-(2-pyridilazo) resorcinol complex. Synthesis of Pb(II)-imprinted polymer was conducted by means of thermal method which was performed under reflux for 7 hours at a temperature of (265±10) oC with the use of antimony (III) oxide (Sb2O3) as catalyst. Pb(II) that was trapped in a polymer cavity was released from this Pb(II)-imprinted polymer by means of leaching method using sodium EDTA (Na2H2Y) 1 M. Determination of adsorption capacity of this Pb (II)-imprinted polymer was conducted by eluting a hypothetical sample solution of Pb(II) into a column (volume= 5 mL, diameter= 4 mm and length= 45 cm) that has been filled with the material of Pb(II)-imprinted polymer. Maximum adsorption capacity for metal Pb(II) is 6.226 mg/g at pH 6 with a flow rate of 1 mL per hour. Polymers and copolymers which have been synthesized were characterized using infrared spectrophotometry to determine the functional group. SEM-EDX also used in the characterization process to observe the surface morphology and the presence of Pb(II) in the polymer matrix at once.