Obtención y caracterización de Quitosano proveniente de Quitina de cuatro especies de insectos y evaluación preliminar de su uso en remoción de cromo en agua.

Abstract

In this work chitin was obtained from 4 insects belonging to different families: Formicidae (ants), Vespidae (wasps), Apidae (bees) and Isoptera (termites). The chitins obtained were deacetylated and converted into chitosan and both biopolymers were analyzed by FTIR obtaining the characteristic bands of these in the infrared, which means that the process of extraction and obtaining of these biopolymers from the four species of insects Mellifera Africanized , Polistes erythrocephalus, Atta cephalotes, Nasutiermes sp) was successful. In addition, chitin and chitosan show the presence of two thermal elements and two mass losses, due to the evaporation of water and the degradation of the same. (VI), the results show that all samples of chitosan reduce the amount of chromium (VI) in an aqueous solution (~ 55ppm), the most suitable being obtained from ants (Atta cephalotes), with a 40,13 % That has its highest content of chitin (19.1772%) and presents a lower removal with 12.47% of termite chitosan.