Abstract

CHITOSAN MODIFICATION THROUGH CROSS-LINKING WITH SODIUM TRIPOLYPHOSPHATE AS AN ADSORBENT OF MN (II) AND CD(II) IONS

A. A. B. Putra*, I. M. S. Negara, I. Eka, P. U. Prayika, D. A. Suastuti, I P. R. A. Baskara

ABSTRACT

Heavy metal pollution in waters can reduce water quality and disrupt environmental balance. The adsorption method is the most effective and efficient method in dealing with heavy metal pollution in waters. The aim of this research is to determine the comparative concentration of chitosan and NaTPP in the formation of nanoparticles and their potential as heavy metal adsorbents in waters. This research began with making nanoparticles with varying ratios of chitosan and NaTPP (25:75; 30:70; 50:50; 70:30; 75; 25) v/v. The adsorbent synthesis results were characterized using a particle size analyzer and a Scanning Electron Microscope to determine the particle size and surface morphology of the adsorbent. The adsorbent with a ratio of chitosan:TPP (25:75) v/v has the smallest size of up to 79.9 nm and has high porosity in its morphology. The chitosan:TPP (25:75) v/v sample had the highest adsorption capacity for Mn and Cd metals, namely (24.7500 mg/g and 99.00%) and the highest effectiveness for Mn and Cd metals, namely (24, 8328 mg/g and 99.33%). Based on the research results, it can be concluded that the ratio of chitosan: TPP (25:75) v/v provides the best results in the formation of nanoparticles and the adsorption ability of Mn and Cd metals.

Keywords: Nanoparticles, Adsorption, Chitosan, Heavy metals.