تهيه زغال زيستي از پسماند چوب درخت زبان‌گنجشك و كاربرد آن به‌عنوان جاذب براي حذف پني‌سيلين از محلول‌هاي آبي: مطالعه ترموديناميكي و سينتيكي فرايند جذب

In this research, with the aim of removing penicillin from aqueous solutions, a biochar adsorbent based on sparrow tongue tree wood waste was synthesized an‎d its structural properties were investigated through FT-IR, FE-SEM, EDS, zeta potential an‎d nitrogen adsorption-desorption tests; so that based on the nitrogen adsorption-desorption results, the specific surface area of the adsorbent was determined to be 306.07 m2/g an‎d its average pore size was 1.32 nm. In the next step, the effect of parameters such as pH, contact time, initial penicillin concentration an‎d temperature on the adsorption process was eva‎luated, an‎d the results showed that at pH 5 an‎d with the consumption of 1 gram of adsorbent, the highest removal efficiency (96%) was achieved from the real solution; while the equilibrium time of this process was 40 minutes. On the other han‎d, the adsorption kinetic data showed the best agreement with the pseudo-second-order model an‎d the isotherm data with the Langmuir model, an‎d accordingly, the maximum adsorption capacity under optimal conditions was calculated to be 3.77 mg/g. Also, the study of the possibility of recovering the adsorbent showed that the use of sodium hydroxide hydrochloric acid solution prevents the decrease in the adsorption percentage. Finally, considering the biocompatibility an‎d economic efficiency of this adsorbent, it can be considered a practical option for the removal of penicillin from aqueous environments.

كيومرث زرگوش

اسماعيل حيدري , محمد ديناري