Conversion of foliar residues of Sansevieria trifasciata into adsorbents: dye adsorption in continuous and discontinuous systems

The study analyzed the potential of leaf powder prepared from the residual leaves of the species Sansevieria trifasciata, as a potential adsorbent for methylene blue (MB) removal. The equilibrium was reached fast for almost all concentrations after 60 min, obtaining the maximum capacity of 139.98 mg g−1 for 200 mg L−1. The increase in temperature disfavored the dye adsorption, with the maximum adsorption capacity of 225.8 mg g−1, observed for 298 K. The thermodynamic parameters confirmed that the adsorption process is spontaneous and exothermic. A direct sloping curve was established for the fixed bed, with breakthrough time (tb), column stoichiometric capacities (qeq), and the mass transfer zone lengths (Zm) were 1430, 1130, and 525 min; 60.48, 187.01, and 322.65 mg g−1; and 8.81, 11.28, and 10.71 cm, for 100, 200, and 500 mg L−1, respectively. Furthermore, in a mixture of several dyes, the adsorbent obtained the removal of 51% of the color.

• Autores: Grassi, Patrícia; Schadeck Netto, Matias; Jahn, Sérgio Luiz; georgin, jordana; Franco, Dison S. P.; Sillanpää, Mika; Meili, Lucas; Silva Oliveira, Luis Felipe
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2022
• Institución: Corporación Universidad de la Costa
• Repositorio: REDICUC - Repositorio CUC
• Idioma: eng
• OAI Identifier: oai:repositorio.cuc.edu.co:11323/9930
• Acceso en línea: https://hdl.handle.net/11323/9930; https://repositorio.cuc.edu.co/
• Palabra clave: Residual adsorbent; Continuous; Discontinuous; Adsorption; Methylene blue
• Rights: embargoedAccess
• License: Atribución 4.0 Internacional (CC BY 4.0)