Avaliação da fibra do sisal como adsorvente de corante têxtil, presente em águas residuárias do processo de tingimento

• Autor(a) principal: Crispiniano, Fellipe Farias
• Data de Publicação: 2020
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UEPB
• Texto Completo: http://tede.bc.uepb.edu.br/jspui/handle/tede/4211
• topic: Secagem; Corante têxtil; Sisal; Adsorção; Drying; Textile dye; Sisal; Adsorption; ENGENHARIAS::ENGENHARIA SANITARIA

The present work sought to produce an alternative adsorbent from the Sisal fiber. The material was washed and dried in an oven at two different temperatures of 60°C and 80°C. The effect of Sisal's drying temperature was evaluated by factor planning 2³. The material was activated with hydrochloric acid (HCl) and sodium hydroxide (NaOH) with a concentration of 0,1 mol.L^-1 . The adsorbents were characterized by Fourier transform infrared spectroscopy (FT - IR) and Zero Load Point (PCZ). The effect of the variables adsorbent mass, dye concentration, pH, contact time and agitation were analyzed through Box-Behnken planning. The adsorption kinetics and isotherms were studied for each adsorbent system. The adsorption kinetics followed a Pseudo-second order and the maximum adsorption capacity for the material in natura, activated with HCl and NaOH were 14.76 mg.g^-1 , 18.30 mg.g^-1 and 3.58 mg.g^1 , respectively. The Freundlich model had the highest R² values and F test ratio, being this the model that best represented the adsorption equilibrium data. It is concluded that Sisal fiber is an attractive material to be used as a bioadsorbent in the adsorption of synthetic dye.