| Autor: |
Civan Çavuşoğlu F; Chemical Engineering Department, Faculty of Engineering & Architecture, İstanbul Beykent University, Istanbul 34396, Türkiye., Özçelik G; Chemical Engineering Department, Faculty of Engineering & Architecture, İstanbul Beykent University, Istanbul 34396, Türkiye., Bayazit ŞS; Institute of Nanotechnology and Biotechnology, Istanbul University-Cerrahpaşa, Istanbul 34500, Türkiye. |
| Jazyk: |
angličtina |
| Zdroj: |
Langmuir : the ACS journal of surfaces and colloids [Langmuir] 2024 Feb 27; Vol. 40 (8), pp. 4255-4266. Date of Electronic Publication: 2024 Feb 18. |
| DOI: |
10.1021/acs.langmuir.3c03369 |
| Abstrakt: |
Phosphate pollution is a very challenging problem for the water environment. Phosphate mixed with water in various ways causes eutrophication. To sustain life in aquatic systems, phosphate ions must be cleaned. Therefore, it is very important to remove phosphate in wastewater. Here, an adsorption method has been tried for the removal of phosphate. MOF-76 (Ce), a cerium-based metal-organic framework, was synthesized by a hydrothermal method. Since metal oxides are known to be successful in phosphate adsorption, CeO 2 nanoparticles were also obtained by pyrolysis of this MOF structure. The phosphate adsorption efficiencies of both adsorbents were compared. The characterization methods (SEM, FTIR, XRD, and TGA) were applied to adsorbents. The kinetic, isotherm, and thermodynamics studies were applied to experimental results. At 298 K, the adsorption capacity of MOF-76 (Ce) is higher than that of CeO 2 , according to Langmuir isotherm q m values. The q m values are 72.97 and 55.71 mg/g, respectively. Both adsorbents follow the pseudo second-order kinetic model. It has been found that MOF-76 (Ce) has a pH-selective property in phosphate adsorption. No change was observed in the phosphate adsorption capacity of CeO 2 with pH. In terms of thermodynamics, the endothermic reaction is valid for both adsorbents. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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