Conversión de vainas de erythrina speciosa en adsorbente poroso para la eliminación de ibuprofeno

The seed pods of the forest species Erythrina speciosa were pyrolyzed with ZnCl2to obtain porous activated carbon (Ery-AC) for adsorption purposes of Ibuprofen. The new material was microporous with a surface area of 795 m2g-1. The kinetic and isothermal studies were conducted at a pH of 3 and an Ery-AC dosage of 0.75 g L-1. The Freundlich and Langmuir isotherms fitted the equilibrium curves, being the adsorption capacity of 98.11 mg g-1. Studies confirmed the endothermic nature (ΔH0=27.36 kJ mol-1). System equilibrium was reached at around 100 min. The linear driving force (LDF) model fits the data satisfactorily. Besides, Ery-AC was tested on a simulated effluent containing various pharmaceutical compounds, presenting a removal efficiency of 65.54 %. The new activated carbon was tested to remove Ibuprofen from water in concentrations of μg L-1and presented excellent results (95 % of removal). Last, regeneration revealed that the Ery-AC could be used 7 times. Therefore, applying seed pods of the forest species Erythrina speciosa carbonized with ZnCl2is highly efficient in removing Ibuprofen and mixtures with other pharmaceuticals.

• Autores: Franco, Dison S.P.; Pinto, Diana; Georgin, Jordana; Netto, Matias S.; Foletto, Edson Luiz; Manera, Christian; Godinho, Marcelo; Silva, Luis F.O.; Dotto, Guilherme L.
• 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:11323/13816
• Acceso en línea: https://hdl.handle.net/11323/13816; https://repositorio.cuc.edu.co/
• Palabra clave: Activated carbon; Adsorption; Erythrina speciosa; Ibuprofen; Pharmaceutical; Pyrolysis
• Rights: openAccess
• License: Atribución 4.0 Internacional (CC BY 4.0)