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A Study on Kinetic and Thermodynamic Adsorption of Fluoride in Aqueous Solution onto Aluminium Hydroxide Coated Rice Husk Ash
| Content Provider | Semantic Scholar |
|---|---|
| Author | Tuyền, Trần Ngọc Quyen, Nguyen Duc Vu Hải, Hồ Văn Minh Quang, Trần Ngọc Vũ Sỹ, Hoàng Trọng Liem, Nguyen Trong |
| Copyright Year | 2016 |
| Abstract | The fluoride adsorption on aluminum hydroxide coated rice husk ash material (RHA/Al(OH) 3 ) was demonstrated in this study. The isothermal data indicated that the Langmuir model well described the adsorption system with the maximum monolayer adsorption capacity of 8.2 mg.g -1 . The kinetic results revealed that the pseudo-second-order rate model fitted the experiments data better than the pseudo-first-order one. Furthermore, the adsorption of fluoride onto this material may be the chemical adsorption. Thermodynamic parameters (DG and DH) in the range of temperature from 30 to 70 o C showed that the adsorption was a spontaneous and an endothermic process. RHA/Al(OH) 3 could be used for well-treatment of fluoride contaminated well-water sampling in Ninhhoa district (Khanhhoa province). With the initial content of fluoride of 6.1 mg.L -1 and after 2 hours of treating with the dose of 4.0 ¸ 7.0 g.L -1 , the concentration of fluoride in the samples decreased to 0.5 ¸ 1.5 g.L -1 , that met acceptable limit of WHO. |
| Starting Page | 737 |
| Ending Page | 737 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.15625/0866-708x/54/6/7703 |
| Alternate Webpage(s) | http://www.vjs.ac.vn/index.php/jst/article/download/7703/7413 |
| Alternate Webpage(s) | https://doi.org/10.15625/0866-708x%2F54%2F6%2F7703 |
| Volume Number | 54 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
