CD Skripsi
Kinetika Reaksi Demineralisasi Pada Isolasi Kitin Dari Limbah Ebi
Chitin is a biopolymer, used for various fields like cosmetics, biomedical, porous material, absorbent of heavy metal, and dietary. The synthesized of chitin from ebi’s waste by deproteinization and demineralization process was investigated. The aims of this research is to determine the reaction kinetics of demineralization at isolation of chitin with variables of concentration of HCl and stirring rate. The research was started by mixing ebi’s waste powder with HCl concentration of 0,2 N; 0,6 N; 1 N; 1,4 N; and 1,8 N at temperature 29°C and the stirring rate 50, 100, 150, 200, and 250 rpm in the beaker glass and completely with stirrer. The Samples were taken for 10 and 15 minutes in amount 20 mL, then washed until neutral and filtered by a filter paper. Isolated chitin was destructed by H2SO4 and HNO3 to determine calcium carbonate content by titration of complexometry. The results show that reaction kinetic follows pseudo second order equation. Reaction rate constant increases with increasing concentration. The reaction rate in the concentration 0,2 N; 0,6 N; 1 N; 1,4 N; and 1,8 N and stirring rate 150 rpm increased from 0,01 to 0,39 min-1. The influence of stirring rate is unsignificant.Constant of reaction increase in stirring rate 50-150 rpm, and then decrease in stirring rate 200 rpm. The Range of reaction rate constant is 0,00167- 0,39 min-1.
Keywords : biopolymer, chitin, demineralization, ebi’s waste, reaction kinetic.
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