TRATAMENTO DE EFLUENTES DE CURTUME A PARTIR DA ADSORÇÃO EM QUITOSANA SUBMETIDA A TRATAMENTO COM LÍQUIDO IÔNICO

Andreia Araújo Morandim-Giannetti; Kevy Pontes Eliodorio; Vitor Seorra Andolfatto; Marco Rulevas Martins; Breno Pivaro de Sá; Erick Umeki

doi:10.18540/jcecvl3iss2pp267-280

Authors

Andreia Araújo Morandim-Giannetti Centro Universitário da FEI
Kevy Pontes Eliodorio Centro Universitário da FEI
Vitor Seorra Andolfatto centro Universitário da FEI
Marco Rulevas Martins Centro Universitário da FEI
Breno Pivaro de Sá Centro Universitário da FEI
Erick Umeki centro Universitário da FEI

DOI:

https://doi.org/10.18540/jcecvl3iss2pp267-280

Keywords:

Tannery effluent, Hexavalent chromium, Ionic liquid, Activated chitosan

Abstract

Initially, we performed the synthesis and characterization of sec-butylammonium acetate IL and chitosan activation with it. Afterwards, we used the activated chitosan to carry out the adsorption of chromium VI, which is the main metallic ion present in tannery effluents. The influence of the adsorbent storage time, adsorbent amount, test time, pH and temperature were analyzed. The storage time indicated low influence on the treatment and on the quality of the adsorbent; however, drying after the impregnation process gave the material greater adsorption capacity. The adsorption time was 1 hour, the ideal amount of 1.00 g and the temperature 25 ° C. Regarding pH, no significant changes were observed in the amount adsorbed between 2 and 4.5. These previously determined conditions were used for the treatment of the tannery effluent, verifying the efficiency of chromium VI concentration reduction.