Optimization, Kinetics, Thermodynamic and Arrhenius Model of the Removal of Ciprofloxacin by Internal Electrolysis with Fe-Cu and Fe-C Materials
| Autor: | Xuan Linh Ha, Ngoc Bich Hoang, Phuong Chi Nguyen, Tra Huong Do, Thi Kim Ngan Tran, Thi Tu Anh Duong |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Fe-Cu and Fe-C Kinetics Bioengineering Electrolyte Activation energy TP1-1185 Endothermic process law.invention Iron powder internal microelectrolysis symbols.namesake law ciprofloxacin Chemical Engineering (miscellaneous) QD1-999 Arrhenius equation Electrolysis Aqueous solution Process Chemistry and Technology Chemical technology remove aqueous solution Chemistry symbols Nuclear chemistry |
| Zdroj: | Processes; Volume 9; Issue 12; Pages: 2110 Processes, Vol 9, Iss 2110, p 2110 (2021) |
| ISSN: | 2227-9717 |
| DOI: | 10.3390/pr9122110 |
| Popis: | The ciprofloxacin (CIP) removal ability of a Fe-Cu electrolytic material was examined with respect to pH (2–9), time (15–150 min), shaking speed (100–250 rpm), material mass (0.2–3 g/L), temperature (298, 308, 323) and initial CIP concentration (30–200 mg/L). The Fe-Cu electrolytic materials were fabricated by the chemical plating method, and Fe-C materials were mechanically mixed from iron powder and graphite. The results show that at a pH value of 3, shaking time 120 min, shaking speed 250 rpm, a mass of Fe-Cu, Fe-C material of 2 g/L and initial CIP concentration of 203.79 mg/L, the CIP removal efficiency of Fe-Cu material reached 90.25% and that of Fe-C material was 85.12%. The removal of CIP on Fe-Cu and Fe-C materials follows pseudo-first-order kinetics. The activation energy of CIP removal of Fe-Cu material is 14.93 KJ/mol and of Fe-C material is 16.87 KJ/mol. The positive ΔH proves that CIP removal is endothermic. A negative entropy of 0.239 kJ/mol and 0.235 kJ/mol (which is near zero and is also relatively positive) indicated the rapid removal of the CIP molecules into the removed products. |
| Databáze: | OpenAIRE |
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