Esvandi, Z and Foroutan, R and Peighambardoust, SJ and Akbari, A and Ramavandi, B (2020) Uptake of anionic and cationic dyes from water using natural clay and clay/starch/MnFe2O4 magnetic nanocomposite. Surfaces and Interfaces, 21. ISSN 24680230
Full text not available from this repository.Abstract
The present research was designed to explore the adsorption of sunset yellow (SY) and Nile blue (NB) from water using clay and clay/starch/MnFe2O4 magnetic composite. The magnetic composite was synthesized by chemical precipitation and the physical-chemical characteristics of the adsorbents were evaluated. The specific magnetic saturation values for MnFe2O4 nanoparticles and clay/starch/MnFe2O4 were obtained 31.88emu/g and 10.33emu/g, respectively. In the batch mode experiments, the effect of operational factors was studied. The pseudo-second-order had a better correlation coefficient compared to the pseudo-first-order, Elovich, and intraparticle diffusion models. The Langmuir and Freundlich model fitted the equilibrium data for adsorption of both dyes (SY and NB) using clay and clay/starch/MnFe2O4, respectively. The maximum adsorption capacity for the adsorption of SY and NB dyes using clay was 67.82 mg/g and 72.25 mg/g, respectively and these values increased by about 15% after using the clay/starch/MnFe2O4 composite. The negative value of Gibbs free energy and enthalpy parameters proved that the SY and NB adsorption is spontaneous and exothermic. A sample of textile wastewater was properly treated using adsorbents. Finally, clay and clay/starch/MnFe2O4 magnetic composite can be used as viable adsorbents for dyes removal from water and industrial wastewater.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Anionic dye Composite Starch |
| Subjects: | QU Biochemistry |
| Divisions: | Faculty of Public Health |
| Depositing User: | خدیجه شبانکاره |
| Date Deposited: | 21 Dec 2020 10:09 |
| Last Modified: | 21 Dec 2020 10:09 |
| URI: | http://eprints.bpums.ac.ir/id/eprint/9027 |
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