تهيه ي بيوچار از تفاله ي هويج و استفاده از آن در سنتز آئروژل هاي نانوكامپوزيت پليمري مغناطيسي جهت حذف رنگ متيلن بلو از پساب

Water scarcity is the most important crisis in the present era, which is a serious an‎d dangerous threat to the life of living organisms. Wastewater treatment is one of the most important solutions to solve this problem. Colored wastewater from various industries has had very dangerous an‎d irreparable effects on the environment an‎d the health of living organisms, especially humans. In this research, considering the importance of treating colored wastewater using biomass, which is another very important challenge for humanity, the synthesis of biochar-based adsorbents has been studied. Biochar was synthesized from carrot pulp by pyrolysis an‎d then magnetized with a source of magnetit. Finally, the desired adsorbent was synthesized from magnetized biochar along with the natural organic polymer sodium alginate in calcium chloride solution. The synthesized adsorbents are nanocomposites of biochar/sodium alginate aerogel beads that have shown excellent adsorption for methylene blue dye. These adsorbents were prepared in two ratios of magnetic biochar to sodium alginate, 2:1 an‎d 1:1. The synthesized adsorbents were investigated by FT-IR, FE-SEM, nitrogen gas adsorption an‎d desorption analysis (BET), an‎d XRD. After confirming the structure, the synthesized adsorbents were used to remove methylene blue dye. The conditions affecting the adsorption of methylene blue, including the amount of adsorbent, pH, contact time an‎d dye concentration, were optimized. The calculated adsorption efficiency an‎d adsorption capacity for the 2:1 bead aerogel were 93.3% an‎d 402.2 mg.g¬-1, respectively, an‎d for the 1:1 bead aerogel were 94.9% an‎d 451 mg.g-1. The adsorption isotherms an‎d calculated kinetic models showed the adsorption efficiency an‎d rate of these beads.

محمد ديناري

عليرضا نجفي چرمهيني

كيومرث زرگوش , معصومه جديدي نژاد