Synthesis and Charactherization of Chitosan-Tripolyphosphate from Clam Shells (Cerithidea obtusa) and Its Application to Sorption of Cadmium Ion

Abstract

Synthesis and characterization of chitosan-tripolyphosphate (Chi-TPP) from Clam Shells (Cerithidea obtusa) and its application to sorption of cadmium ion has been researched. The Chi-TPP was synthesized using gelation methods by addition tripolyphospate 0,1%. The chitosan was prepared by deacetylation from chitin and this was isolated from Clam Shells (Cerithidea obtusa). The Chi-TPP was characterized using Fourier Transform Infra-Red (FTIR), X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM). FTIR characterization was indicated the appearance peak of a N-H vibration at 1635 cm-1 , functional group of NH3+ deformation at 1534 cm-1, streching vibration of a –C-O- at 1072 cm-1and vibration of P-O at 1026,91 cm-1 was indicated the presence of TPP. XRD pattern of Chi-TPP showed broad diffraction peaks at 2Ɵ values of 19.85o , which are thypical fingerprints of Chi-TPP. The lower intensity of Chi-TPP was revealed that its was amorphous. SEM image of Chi—TPP showed cross-linker TPP on chi and stabilizes them. The sorption application of cadmiun ions on Chi-TPP was optimum at pH 4 ie 29.12 mg/g.