Removal of dye waste by weak cation-exchange nanofiber membrane immobilized with waste egg white proteins
| Autor: | Bing-Lan Liu, Harshini Pakalapati, Yu-Kaung Chang, Pau Loke Show, Jen-Hong Chang |
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| Rok vydání: | 2020 |
| Předmět: |
Thermogravimetric analysis
Hot Temperature Acrylic Resins Nanofibers 02 engineering and technology Biochemistry 03 medical and health sciences chemistry.chemical_compound Adsorption Structural Biology Desorption Spectroscopy Fourier Transform Infrared Animals Fourier transform infrared spectroscopy Coloring Agents Molecular Biology 030304 developmental biology 0303 health sciences Aqueous solution Chemistry Egg Proteins Polyacrylonitrile Membranes Artificial General Medicine 021001 nanoscience & nanotechnology Membrane Nanofiber Thermogravimetry Microscopy Electron Scanning 0210 nano-technology Chickens Water Pollutants Chemical Nuclear chemistry |
| Zdroj: | International journal of biological macromolecules. 165 |
| ISSN: | 1879-0003 |
| Popis: | In this research, a protein nanofiber membrane (P-COOH-CEW) was developed to treat the dye waste. Initially, polyacrylonitrile nanofiber membrane (PAN) was prepared by electrospinning, followed by heat treatment, alkaline treatment, and neutralization to obtain weak cation exchange nanofiber membrane (P-COOH). The P-COOH membrane was chemically coated with chicken egg white (CEW) proteins to obtain a 3D structure of complex protein nanofiber membrane (P-COOH-CEW). The composite prepared was characterized with Fourier Transform Infrared analysis (FTIR), Scanning Electron Microscopy (SEM), and thermogravimetric analysis (TGA). Further, the composite was evaluated by investigating the removal of Toluidine Blue O (TBO) from aqueous solutions in batch conditions. Different operating parameters - coupling of CEW, shaking rate, initial pH, contact time, temperature, and dye concentration were studied. From the results, maximum removal capacity and equilibrium association constant was determined to be 546.24 mg/g and 10.18 mg/mg, respectively at pH 10 and 298 K. The experimental data were well fitted to pseudo-second order model. Furthermore, desorption studies revealed that the adsorbed TBO can be completely eluted by using 50% ethanol or 50% glycerol in 1 M NaCl solution. Additionally, the reuse of P-COOH-CEW membrane reported to have 97.32% of removal efficiency after five consecutive adsorption/desorption cycles. |
| Databáze: | OpenAIRE |
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