توسعه فیلم‌های انعطاف‌پذیر کربن فعال اصلاح‌شده با پلی‌یورتان برای حذف مؤثر متیلن بلو

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشکده مهندسی شیمی و نفت، دانشگاه تبریز، تبریز، ایران، صندوق پستی: 51666-16471

10.30509/jcst.2025.167668.1272

چکیده

آلودگی آب ناشی از رنگزاهای صنعتی مانند متیلن بلو به دلیل پایداری شیمیایی و اثرات زیست‌محیطی منفی، چالشی جدی در مدیریت پساب‌ها است. این پژوهش به توسعه جاذب‌های کارآمد از فیلم‌های کربن فعال (FAC) تهیه‌شده از هسته سنجد با روش ژل آلژینات (AC-Alg) می‌پردازد. برای رفع شکنندگی و بهبود خواص مکانیکی جاذب، 5 تا 20 درصد وزنی پلی‌یورتان (PU) به جاذب اضافه شد. پودر کربن فعال از هسته سنجد تهیه شده و سپس جاذب فیلم کربنی با استفاده از آلژینات سدیم سنتز شده و در نهایت توسط پلی‌یورتان اصلاح گردید تا برای حذف رنگزای متیلن بلو استفاده شود. آزمایش‌های جذب‌ در شرایط بهینه (10pH=، مقدار جاذب g/L 1، غلظت رنگزا mg/L 10، دمای °C 25، زمان min 120) انجام شد. جاذب AC-Alg-5 % PU، بازده جذب 89 درصد و ظرفیت mg/g 17/27 داشت. آزمون‌های FE-SEM، BET و FTIR انجام شد. بررسی ایزوترم‌ها و مدل‌های سینتیکی جذب، نشان از جذب فیزیکی و شیمیایی به‌طور هم‌زمان دارند اما نتایج ترمودینامیک جذب حاکی از غالب بودن جذب فیزیکی است. این مطالعه، پتانسیل فیلم‌های انعطاف‌پذیر کربن فعال اصلاح‌شده با پلی‌یورتان و تهیه‌شده از ماده ارزان‌قیمت هسته سنجد را به‌عنوان گزینه‌ای جذاب برای تصفیه فاضلاب صنعتی و کاربرد در غشاها نشان می‌دهد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Development of Flexible Polyurethane-modified Activated Carbon Films for Effective Removal of Methylene Blue

نویسندگان [English]

  • Mohadeseh Eskandarpour
  • Maryam Tahmasebpoor
Faculty of Chemical and Petroleum Engineering, University of Tabriz, P.O. Box: 16471-51666, Tabriz, Iran
چکیده [English]

Water pollution caused by industrial dyes such as methylene blue, due to their chemical stability and negative environmental impacts, poses a serious challenge in wastewater management. This research focuses on the development of efficient adsorbents from activated carbon films prepared from oleaster seeds using the alginate gel method. To address brittleness and improve the mechanical properties of the adsorbent, 5 to 20
 wt. % polyurethane was added. Activated carbon powder was prepared from oleaster seeds, and then the carbon film adsorbent was synthesized using sodium alginate and finally modified with polyurethane for the removal of methylene blue dye. Adsorption experiments were conducted under optimal conditions (pH=10, adsorbent dose 1 g/L, dye concentration 10 mg/L, temperature 25 °C, time 120 min). The AC-Alg-5 % PU adsorbent exhibited 89 % adsorption efficiency and a capacity of 27.17 mg/g. Analyses including FE-SEM, BET, and FTIR were performed. Examination of isotherms and kinetic models of adsorption indicate physical and chemical adsorption simultaneously, but the thermodynamic results of adsorption indicate the dominance of physical adsorption. This study demonstrates the potential of flexible activated carbon films modified with polyurethane and prepared from the low-cost oleaster seed material as an attractive option for industrial wastewater treatment and membranes applications.

کلیدواژه‌ها [English]

  • Wastewater treatment Methylene blue Activated carbon Film
  • Polyurethane Oleaser seed

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