| Autor: |
Zhijian Zhou, Jie Yan, Xinxiang Du, Qiulin Xu, Zijun Wu, Jinlan Yang, Xitong Fang, Qiuling Zhong, Qiaoguang Li |
| Předmět: |
|
| Zdroj: |
Journal of Renewable Materials; 2023, Vol. 11 Issue 9, p3501-3515, 15p |
| Abstrakt: |
Iron-pillared bentonite (FB) was prepared by Fe(III) modified bentonite, and then the composites (FB-OS) were prepared by iron-pillared bentonite and oyster shell powder. The composites were characterized by FTIR, SEM, TGA, and EDS, and the phosphorus removal test was carried out. The results showed that FB-OS contained a large amount of CaO. Its structure was compact, but there were gaps in it. The maximum bending stress and compressive strength were 43.7 N and 0.927 MPa, respectively. The phosphorus removal test showed that the phosphorus removal rate of FB-OS was more than 90%, and measured the maximum adsorption capacity was 48.31 mg/g. A large amount of spherical products were produced on the surface and inside of FB-OS after phosphorus removal, it was speculated that spherical products were amorphous calcium phosphate in the paper. Analysis indicated that there was chemical adsorption during phosphorus removal. The kinetic equation of phosphorus adsorption by FB-OS was qt = 10.193t/1+2.574t (R² = 0.995). The adsorption rate was mainly controlled by outer film diffusion and intraparticle diffusion. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
