Removal of Emerging Contaminants as Diclofenac and Caffeine Using Activated Carbon Obtained from Argan Fruit Shells

Activated carbons from argan nutshells were prepared by chemical activation using phosphoric acid H3PO4. This material was characterized thermogravimetric analysis, infrared spectrometry, and the Brunauer–Emmett–Teller method. The adsorption of two emerging compounds, a stimulant caffeine an anti-inflammatory drug diclofenac, distilled water through batch dynamic tests investigated. Batch mode experiments conducted to assess capacity diclofenac aqueous solution carbon above. Adsorption showed that equilibrium time is 60 90 min for caffeine, respectively. on activated described pseudo-second-order kinetic model. highest determined mathematical model Langmuir about 126 mg/g 210 caffeine. thermodynamic parameters attached studied absorbent/adsorbate system indicate process spontaneous exothermic endothermic