Extraction of Drugs Residuals from Aqueous Solution Using Three Types of Adsorbents
| dc.contributor.author | ظاهر, ياسمين أكرم خالد | |
| dc.date.accessioned | 2021-05-31T08:58:21Z | |
| dc.date.available | 2021-05-31T08:58:21Z | |
| dc.date.issued | 2018-10-08 | |
| dc.description.abstract | Large number of emergent pollutants from pharmaceutical industries leach every day to soil and ground waters without treatment. This will lead to different health problems to both human beings and living organisms. The major problem is try to remove this pollutant like Ibuprofen (IBP) using adsorption. Many treatment options were inspected for extract or remove the pharmaceuticals, include both conventional (e.g., biodegradation, adsorption, activated sludge) and advanced (e.g., membrane, microfiltration, ozonation) processes [1] . In our study we prepared three types of adsorbents to extract the emergent drug (Ibuprofen) from aqueous solution, the first type is cellulose derivatives (Cellulose Nanocrystalline (CNC), Magnetic Cellulose Nanocrystalline (MNCs), and Silver Cellulose Nanocrystalline(AgNCs)). The cellulose was converted to CNC, and then it was converted to MNCs and AgNCs. The second adsorbents are Carrageenan (CRG) material compared with CRG composites with CNC. Final adsorbents were prepared using beta-cyclodextrin (β-CD), it was converted to Acetyl β-CD and Benzoyl β-CD. These two prepared adsorbents were then composites with CNC. The Cellulose Nanocrystalline, Acetyl β-CD and Benzoyl β-CD were analyzed by using IR. That was the first objective of my work. A second one was adsorption of the Ibuprofen from aqueous solution, using these prepared materials as an adsorbent. However, the NCs, AgNCs, CRG/NCs Benzoyl β-CD/NCs showed excellent extraction efficiency toward IBP relative to MNCs and CRG, but the Acetyl β-CD/NCs showed good efficiency. Five variables were monitored and evaluated during the extraction process: time, pH, temperature, dosage, and IBP concentrations. The adsorption thermodynamics of the adsorbents were evaluated, all of them followed Langmuir isotherm model and pseudo second order. The negative ∆G° values indicate that the adsorption is favorable and spontaneous at different temperatures. The positive values of ∆H° reflect an endothermic adsorption and that the adsorption is favored at high temperature. While ΔS0 values were positive indicating the disorder at the solid/solution interface increased during adsorption process. | en_US |
| dc.identifier.uri | https://hdl.handle.net/20.500.11888/15693 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | An-Najah National University | en_US |
| dc.title | Extraction of Drugs Residuals from Aqueous Solution Using Three Types of Adsorbents | en_US |
| dc.title.alternative | استخلاص متبقيات الأدوية من المحاليل المائية باستخدام ثلاثة أنواع من الممتزات | en_US |
| dc.type | Thesis | en_US |