ENCAPSULATION 1-PHENYL-3-METHYL-4-BENZOYL-5- PYRAZOLONE ACID (HPMBP) WITH ALGINATE CALCIUM FOR IONS OF Cd(II) ADSORPTION

• Main Author: Nurjanah, Ane
• Format: Theses
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/32327
• Institution: Institut Teknologi Bandung

Increasing industrial activity produce heavy metal pollutants that is harmful to the environment such as cadmium. Most of cadmium, come from batteries industrial, semiconductor; electroplating metal, casting zinc, the manufacture of alloy, pigment of plastic and textile. Efforts to deprive of cadmium from industrial wastes can be conducted by adsorption method, ion-exchange, elektrodialisis, reverse osmosis, ultrafiltration, and solvent extraction. Solvent extraction is a method that many used to adsorb cadmium. However, the use of organic solvents in large amount that is unfriendly environmental is weakness this method. 1-phenyl-3-methyl-4- benzoyl-5-pyrazolone acid (HPMBP) has much used as ligan at extraction process solvent a number of metal ion. Encapsulation can be used as an alternative method to replace the use of an organic solvent it is expected that more environmentally friendly. On this research has been conducted synthesis of adsorbent with encapsulation ligand 1-phenyl-3-methyl-4- benzoyl-5-pyrazolone acid (HPMBP) into a alginate calcium (Ca-alginate- HPMBP). HPMBP ligands have been synthesized and characterized by melting point test, FTIR, 1H, 13C NMR, and mass spectra. The conditions of optimum adsorption of Cd (II) by a Ca-alginate-HPMBP are: pH 6, 5 hours of contact time, and optimum mass of 0.05 g. The adsorption of Cd (II) follow the Langmuir isotherm and order one Lagergren reaction kinetics. On the binary system the selectivity factor (?) Ca-alginate-HPMBP for Cd (II)- Cu (II), Cd (II)- Zn (II), and Cd (II)-Pb (II) is respectively 1,04; 1,15; 1,08. Ca-alginate-HPMBP having performance remained good at three times the process of adsorption-desorption and has been applied in samples of the environment containing Cd(II) ions.