Removal of cationic dye waste by nanofiber membrane immobilized with waste proteins
| Autor: | Pau Loke Show, Yu-Kaung Chang, Yu-Ling Lin, Chen-Yaw Chiu, Wai Siong Chai, Shen-Long Tsai, Dinh Thi My Huong |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Chemical Phenomena
Nanofibers 02 engineering and technology Wastewater Biochemistry 03 medical and health sciences Hydrolysis chemistry.chemical_compound symbols.namesake Adsorption Structural Biology Cations Desorption Coloring Agents Molecular Biology 030304 developmental biology 0303 health sciences Molecular Structure Chemistry Polyacrylonitrile Langmuir adsorption model Membranes Artificial General Medicine 021001 nanoscience & nanotechnology Kinetics Membrane Nanofiber symbols Thermodynamics 0210 nano-technology Nuclear chemistry |
| Zdroj: | International Journal of Biological Macromolecules. 164:3873-3884 |
| ISSN: | 0141-8130 |
| Popis: | Water pollution caused by dyes has been a serious problem affecting human health and environment. The surface of polyacrylonitrile (PAN) nanofiber membranes was modified by mild hydrolysis and coupled with bovine serum albumin (BSA) obtained from the laboratory wastes, resulting in the synthesis of P-COOH and P-COOH-BSA nanofibers. The nanofibers with specific functional groups may enhance their potential applications toward the removal of ionic dyes in wastewater. Toluidine blue O (TBO) was applied as an example of cationic dye to evaluate the removal efficiency of P-COOH-BSA nanofiber. Results showed that the equilibrium dissociation constant and maximum removal capacity were 0.48 mg/mL and 434.78 mg/g, respectively, at pH 12, where the TBO removal can be explained based on Langmuir isotherm and pseudo-second-order model. Desorption studies have shown that TBO adsorbed on P-COOH-BSA protein membrane can be completely eluted with either 1 M NaCl or 50% glycerol. The results of repeated studies indicated that after five consecutive adsorption/desorption cycles, the removal efficiency of TBO can be maintained at ~97%. P-COOH-BSA has shown to be promising adsorbent in TBO dye removal from dye wastewater. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect