جذب سطحی ماده رنگزای ایندیگو با استفاده از نانو الیاف مغناطیسی کیتوسان- اسید ایتاکونیک و بررسی سینتیک و ایزوترم جذب آن

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه نفت و مهندسی شیمی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

2 گروه مهندسی شیمی، واحد ورامین-پیشوا، دانشگاه آزاد اسلامی، ورامین، ایران

3 گروه مهندسی شیمی، دانشکده نفت و مهندسی شیمی، دانشگاه صنعتی شریف، تهران، ایران

چکیده

امروزه تصفیه پساب صنعتی، ازجمله پساب نساجی، بسیار حائز اهمیت است. کاربرد نانو مواد در حذف فاضلاب‌های رنگی، در سال‌های اخیر توجه گسترده‌ای یافته است. یکی از این آلاینده‌ها با طیف وسیع استفاده در صنایع، ماده رنگزای ایندیگو می‌باشد. در این پژوهش از نانو الیاف مغناطیسی کیتوسان- اسید ایتاکونیک برای تصفیه پساب ماده رنگزای ایندیگو به­وسیله روش جذب سطحی استفاده شد. پس از طراحی آزمایش، سنتز نانوالیاف به­روش الکتروریسی و فرمو‌ل‌بندی بهینه (کیتوسان 2.8%، نانو آهن0.46% و اسید ایتاکونیک 0.65%)، به بررسی سینتیک و ایزوترم جذب آن پرداخته و مشخص شد الیاف سنتزی از سینتیک شبه مرتبه اول و ایزوترم فروندلیچ پیروی می‌کند. همچنین نانو الیاف سنتز شده با استفاده از آزمون‌های میکروسکوپ الکترونی روبشی، طیف‌سنجی زیر قرمز، پراش پرتو ایکس، آزمون وزن‌سنجی حرارتی و مغناطیس‌سنجی مورد تجزیه ‌و تحلیل قرار گرفت و تأثیر غلظت اولیه آلاینده، زمان تماس و pH  بر مقدار جذب مورد بررسی قرار گرفت. نتایج نشان داد که غلظت بهینه ماده رنگزای ایندیگو ppm ۱۰۰، زمان بهینه 45 دقیقه وpH بهینه 3 است.

کلیدواژه‌ها

dor 20.1001.1.17358779.1399.14.2.4.4

موضوعات


عنوان مقاله [English]

Adsorption of Indigo Dye Using Magnetic Chitosan-Itaconic Acid Nano Fibers and Investigation of Kinetics and Absorption Isotherm Models

نویسندگان [English]

  • R. Sohrabzadeh Dabanlou 1
  • Sh. Shahsavari 2
  • A. Vaziri Yazdi 1
  • A. A. Seifkordi 3
1 Oil and Chemical Engineering Department, Science and Research Branch, Islamic Azad University, Tehran, Iran
2 Chemical Engineering Department, Varamin-Pishva Branch, Islamic Azad University, Varamin, Iran
3 Chemical and Petroleum Engineering Department, Sharif University of Technology, Tehran, Iran
چکیده [English]

Today, the treatment of industrial wastewater, including textile is in a high importance. Actually the use of nanomaterials in the removal of wastewater from sewage has attracted widespread attention in recent years. The color of the Indigo is one of these pollutants. In this study, optimum nano fiber chitosan-itaconic acid was prepared using experimental design and in the following adsorption of Indigo dye wastewater treatment and the study of its kinetics and its isotherm was investigated. X-ray diffraction (XRD), Field Emission Scanning Electron Microscopes (FESEM), Infrared Fourier Transform (FT-IR), Vibrational Sampler Magnetic Meter (VSM) and thermal gravimetric analysis (TGA) are also used to study synthesize nano-fibers. Also, the effect of the initial concentrations of pollutants for absorbance, contact time, temperature and pH were investigated.In this study, the optimal concentration of Indigo 100 ppm, optimal time of 45 minutes and optimal pH 3 was obtained. The mechanism absorption of chitosan-itaconic acid follows the pseudo first-order kinetics and Freundlich isotherm model. 

کلیدواژه‌ها [English]

  • Indigo
  • Adsorption
  • Wastewater Treatment
  • Magnetic chitosan
  • Itaconic acid
  • Electrospining
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