Remoção do corante têxtil c.i. reactive blue 203 utilizando casca de manihot esculenta crantz como adsorvente

• Autor(a) principal: Silva, Simone Keily Costa
• Data de Publicação: 2019
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Digital da Universidade Federal Rural do Semi-Árido (RDU)
• Texto Completo: https://repositorio.ufersa.edu.br/handle/prefix/5349
• topic: Bioadsorção; Casca de mandioca; Azul reativo BF-5G; Bioadsorption; Cassava peel; Reactive blue BF-5G.-; ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA

The textile industry consumes a significant volume of water in the dyeing process of fibers. The wastewater generated in processing, in addition to turbidity, due to the presence of dyes that do not fixate in fiber during the dyeing process, are harmful to the aquatic environment and to human beings. This wastewater must pass through a treatment process before being released into water bodies. The treatment of contaminated water with the use of bioadsorption as an alternative has advantages of low cost and material recycling natural waste. Based on the above, the objective of this work was to evaluate the adsorption capacity of the textile dye C.I. REACTIVE BLUE 203 in shell of cassava (Manihot Esculenta Crantz), waste from cassava flour industry. The bark of cassava (Manihot Esculenta Crantz) was obtained in the region of Lagoa Salgada - RN. Initially the material was subjected to washing for removal of impurities and dried in an oven at 110°C. After drying, the material was ground, sifted and weighed. The particle size chosen was the particle diameter (1 mm, 0, 0, 5 mm and 297 mm). The point of zero charge of the surface of the adsorbent material was pH equal to 5. The maximum capacity of adsorption, in 24 hours of contact of disperse dyestuff in the bark of cassava, varying the conditions of pH and particle size were as follows: (Qmax = 85.18 mg.g-1; pH = 1; 30° C; 180 rpm; 16 mesh); (Qmax = 52.3059 mg g-1; pH = 0; 30° C; 180 rpm; 32 mesh); (Qmax = 92.9183 mg g-1; pH = 0; 30° C; 180 rpm; 48 mesh). The kinetic description of the models that best represented the process were the pseudo-first order and order pseudo- second The use of cassava fresh bark turned out to be an alternative in the removal of the dye