| Autor: |
Maazouzi, Assia, Aguedal, Hakim, Driouch, Aouatef, Merouani, Djilali Redha, Singh, Kulbir, Goel, Gaurav, El Aissaoui el Meliani, Mohamed el Amine |
| Zdroj: |
International Journal of Environmental Analytical Chemistry; Dec2024, Vol. 104 Issue 20, p9723-9745, 23p |
| Abstrakt: |
Water is essential for the survival of all living beings and availability of freshwater is being threatened due to increase in pollution and emerging contaminants such as pharmaceutical product. In the light of tightening norms, proper treatment of wastewater released from hospitals and pharmaceutical industry becomes a requirement. This study is aimed to explore the feasibility of using thermally and chemically modified Algerian Sandstone clay as an alternative adsorbent for the removal of Paracetamol (PCTML) from hospital wastewater. The adsorbents properties were assessed by Fourier Transform Infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric and Differential Scanning Calorimetry (TGA/DSC) analysis and Scanning Electron Microscopy-Energy Dispersive X-ray spectroscopy (SEM-EDX). Operating conditions, including pH of solution, contact time, initial concentration, and temperature, were optimised by conducting removal tests in batch mode. The results indicates that the adsorption capacity of PCTML was obtained at neutral pH and the equilibrium reached after 60 min of contact. The equilibrium isotherms were well fitted by Langmuir isotherm model for raw and calcined Algerian Sandstone, while the adsorption isotherms of the treated Algerian Sandstone were more appropriate with Freundlich isotherm model. The adsorption kinetics was well described by the pseudo-second order model. The potential reusability of the Algerian Sandstone clay shows that removal rate was kept performing up to the 3rd cycle of regeneration. The combined thermo-chemical activation shows great promise for utilising clay as an effective adsorbent for removing various organic contaminants. This study promotes the objectives of European green deal by utilising natural material e.g. clay and contributes towards circular economy and United Nations Sustainable Development Goals (SDGs) 6 and 12. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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