Novel cellulose-based biosorbent from lemongrass leaf combined with cellulose acetate for adsorption of crystal violet
| Autor: | Adisak Keereerak, Khoiria Nur Atika Putri, Watchanida Chinpa |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Thermogravimetric analysis
02 engineering and technology Biochemistry 03 medical and health sciences chemistry.chemical_compound symbols.namesake Adsorption X-Ray Diffraction Structural Biology Desorption Spectroscopy Fourier Transform Infrared Crystal violet Cymbopogon Cellulose Molecular Biology 030304 developmental biology 0303 health sciences Chemistry Swelling capacity Temperature Langmuir adsorption model General Medicine Hydrogen-Ion Concentration Models Theoretical 021001 nanoscience & nanotechnology Cellulose acetate Plant Leaves Kinetics symbols Gentian Violet 0210 nano-technology Algorithms Nuclear chemistry |
| Zdroj: | International Journal of Biological Macromolecules. 156:762-772 |
| ISSN: | 0141-8130 |
| Popis: | A novel biosorbent from lemongrass leaf fibers incorporated with cellulose acetate (TLGL-CA) was prepared and its properties and adsorption capacity toward crystal violet (CV) were investigated. The good adhesion between TLGL and CA in TLGL-CA sheet was revealed by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), Fourier Transform Infrared Spectroscopy (FTIR), and tensile properties. The potential of the biosorbent for CV adsorption was indicated by its high swelling capacity and the presence of functional groups of lignocellulose. Adsorption results obtained at different contact times and initial CV concentrations fitted well with the pseudo-second order model. The adsorption data at equilibrium were well described by the Langmuir isotherm model and the maximum monolayer adsorption capacity was 36.10 mg g−1 at 25 °C. In the desorption study, five adsorption-desorption cycles of CV were successfully repeated with TLGL-CA sheet, using acetic acid as the desorbing agent. Based on the study results, it was concluded that the developed biosorbent is effective, inexpensive, and convenient to use for the removal of cationic dye in wastewater. |
| Databáze: | OpenAIRE |
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