Avaliação do processo adsortivo utilizando mesocarpo de coco verde para remoção do corante cinza reativo BF-2R

• Main Authors: Otidene Rossiter Sá da Rocha, Graziele Elisandra do Nascimento, Natália Ferreira Campos, Valdinete Lins da Silva, Marta Maria Menezes Bezerra Duarte
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2012-01-01
• Series: Química Nova
• Subjects: adsorption; bioadsorbent; dye
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000700016&lng=en&tlng=en

This work used green coconut mesocarp as a bioadsorbent to remove Reactive Gray BF-2R dye. A 2³ factorial design was used to evaluate the influence of the variables adsorbent mass, particle size and stirring speed on the adsorptive process. Kinetic and adsorption equilibrium studies were performed. Results showed that the kinetic equilibrium was reached after 150 min. Using the Langmuir model, a q max of 21.9 mg g-1 and k of 0.30 L g-1 was obtained. The mesocarp of coconut, a residue of agribusiness, proved to be an effective alternative technique for the removal of dye in this study.