Calcium alginate/activated carbon/humic acid tri-system porous fibers for removing tetracycline from aqueous solution
| Autor: | Yanhui Li, Kunyan Sui, Qinye Sun, Meixiu Li, Cuiping Wang, Qiuju Du, Yanzhi Xia, Hongliang Li, Heng Zheng |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Calcium alginate
Tetracycline General Chemical Engineering humic acid 02 engineering and technology 010501 environmental sciences 01 natural sciences sodium alginate chemistry.chemical_compound Adsorption medicine Humic acid activated carbon Porosity QD1-999 tetracycline 0105 earth and related environmental sciences Sodium alginate chemistry.chemical_classification Aqueous solution Chemistry General Chemistry 021001 nanoscience & nanotechnology Chemical engineering adsorption 0210 nano-technology Biotechnology Activated carbon medicine.drug |
| Zdroj: | Polish Journal of Chemical Technology, Vol 22, Iss 3, Pp 9-16 (2020) |
| ISSN: | 1899-4741 |
| DOI: | 10.2478/pjct-2020-0022 |
| Popis: | In this study, activated carbon and humic acid powder were fixed by the cross-linking reaction of sodium alginate. Calcium alginate/activated carbon/humic acid (CAH) tri-system porous fibers were prepared by the wet spinning method and freeze-dried for the removal of tetracycline in aqueous solution. Subsequently, the morphology and structure of CAH fibers were measured by scanning electron microscopy (SEM) and the Brunauer-Emmett-Teller (BET) method. The effect of pH, contact time, temperature and other factors on adsorption behavior were analyzed. The Langmuir and Freundlich isotherm models were used to fit tetracycline adsorption equilibrium data. The dynamics data were evaluated by the pseudo-second-order model, the pseudo-second-order model and the intraparticle diffusion model. Thermodynamic study confirmed that the adsorption of tetracycline on CAH fibers was a spontaneous process. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|