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...
| Autores: | , , , , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão preliminar |
| Data de publicação: | 2022 |
| País: | Colombia |
| Recursos: | Corporación Universidad de la Costa |
| Repositório: | Repositorio REDICUC |
| Idioma: | inglês |
| OAI Identifier: | oai:repositorio.cuc.edu.co:11323/9930 |
| Acesso em linha: | https://hdl.handle.net/11323/9930 https://repositorio.cuc.edu.co/ |
| Access Level: | Acesso embargado |
| Palavra-chave: | Residual adsorbent Continuous Discontinuous Adsorption Methylene blue |
| Resumo: | 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. |
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