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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Park, HyunJu Nguyen, Duc Canh Na, Choo-Ki |
| Description | Author Affiliation: Park H ( Integrated Research Institute of Construction and Environmental Engineering #35-216, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea.); Nguyen DC ( Department of Civil & Environment Engineering #35-518, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742 Republic of Korea E-mail: mrcanhctn@gmail.com.); Na CK ( Department of Environmental Engineering, Mokpo National University, Jeonnam 534-729, Republic of Korea.) |
| Abstract | In this study, we investigated the removal of phosphate from aqueous solutions using (vinylbenzyl)-trimethylammonium chloride (VBTAC) grafted onto poly(ethylene terephthalate) (PET) fibers (PET-g-VBTAC). Batch-mode experiments were conducted using various contact times, initial phosphate concentrations, temperatures, pH values, and competing anions, to understand phosphate sorption onto PET-g-VBTAC. The phosphate sorption capacity of PET-g-VBTAC increased with increasing solution pH and was highest near pH 7. The equilibrium data fitted the Langmuir isotherm model well. The maximum sorption capacity (qm) of PET-g-VBTAC for phosphate was 55.6-56.0 mg/g at 25-45 °C. The sorption process followed a pseudo-second-order kinetic model. The obtained values of the mean free energy indicated that sorption of phosphate on PET-g-VBTAC occurs via ion exchange. Thermodynamic parameters, enthalpy change, entropy change, and Gibb's free energy, confirmed that phosphate sorption was spontaneous and endothermic. The adverse effects of competing anions on phosphate removal by PET-g-VBTAC were insignificant. These results demonstrate that PET-g-VBTAC effectively removes phosphate from aqueous solutions by ion exchange. |
| File Format | HTM / HTML |
| ISSN | 02731223 |
| Issue Number | 12 |
| Volume Number | 71 |
| e-ISSN | 19969732 |
| Journal | Water Science & Technology |
| Language | English |
| Publisher | IWA Publishing |
| Publisher Date | 2015-01-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | Subscribed |
| Subject Keyword | Discipline Hydrology Phosphates Chemistry Polyesters Quaternary Ammonium Compounds Adsorption Chlorides Hydrogen-ion Concentration Kinetics Temperature Thermodynamics Water Pollutants, Chemical Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Engineering Water Science and Technology |
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