Removal of Azo Dyes from Water Using Natural Luffa cylindrica as a Non-Conventional Adsorbent
Reducing high concentrations of pollutants such as heavy metals, pesticides, drugs, and dyes from water is an emerging necessity. We evaluated the use of Luffa cylindrica (Lc) as a natural non-conventional adsorbent to remove azo dye mixture (ADM) from water. The capacity of Lc at three different do...
| Autores: | , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | México |
| Institución: | Universidad Autónoma del Estado de Morelos |
| Repositorio: | Repositorio Institucional de Acceso Abierto de la Universidad Autónoma del Estado de Morelos |
| Idioma: | inglés |
| OAI Identifier: | oai:http://riaa.uaem.mx:20.500.12055/4574 |
| Acceso en línea: | http://riaa.uaem.mx/handle/20.500.12055/4574 |
| Access Level: | acceso abierto |
| Palabra clave: | info:eu-repo/classification/cti/2 info:eu-repo/classification/cti/23 Luffa cylindrica, unmodified fiber, non-conventional adsorbent, azo dyes, dye removal |
| Sumario: | Reducing high concentrations of pollutants such as heavy metals, pesticides, drugs, and dyes from water is an emerging necessity. We evaluated the use of Luffa cylindrica (Lc) as a natural non-conventional adsorbent to remove azo dye mixture (ADM) from water. The capacity of Lc at three different doses (2.5, 5.0, and 10.0 g/L) was evaluated using three concentrations of azo dyes (0.125, 0.250, and 0.500 g/L). The removal percent (R%), maximum adsorption capacity (Qm), isotherm and kinetics adsorption models, and pH influence were evaluated, and Fourier-transform infrared spectroscopy and scanning electron microscopy were performed. The maximum R% was 70.8% for 10.0 g L−1 Lc and 0.125 g L−1 ADM. The Qm of Lc was 161.29 mg g−1. Adsorption by Lc obeys a Langmuir isotherm and occurs through the pseudo-second-order kinetic model. Statistical analysis showed that the adsorbent dose, the azo dye concentration, and contact time significantly influenced R% and the adsorption capacity. These findings indicate that Lc could be used as a natural non-conventional adsorbent to reduce ADM in water, and it has a potential application in the pretreatment of wastewaters. |
|---|