بهینه سازی فرآیند حذف رنگزای اسیدی آبی-74 از پساب نساجی با نانوزئولیت اصلاح شده

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه مهندسی نساجی-دانشکده فنی-دانشگاه آزاد اسلامی واحد علوم و تحقیقات-تهران-ایران

2 گروه طراحی لباس-دانشکده هنر-دانشگاه آزاد اسلامیی واحد تهران جنوب-تهران-ایران

3 گروه فیزیک-دانشگاه الزهرا-تهران-ایران

چکیده

در این پژوهش، برای تعیین شرایط بهینه حذف رنگزای اسیدی آبی-74 از جاذب نانوزئولیت در ابعاد کوچک‌تر از 100 نانومتر، از طراحی آزمایش‌هایی به روش سطح پاسخ (RSM) مدل باکس بنکن (BBD) توسط نسخه 19 نرم‌افزار Mini Tab استفاده شد. پارامترهای تاثیرگذار در فرآیند جدب از قبیل pH، دما، غلظت رنگزا، دور همزن و مقدار جاذب، در سیستم تحیل آماری ANOVA برای مطالعه‌ی فرآیند جذب رنگزا، مورد بررسی قرار گرفتند. نتایج این تحقیق نشان داد که کاهش pH، دما و غلظت رنگزا، تاثیر قابل توجهی در بهبود فرآیند جذب دارد.برای حذف آلاینده‌ها توسط جاذب نانوزئولیت، سطح نانوزئولیت با استفاده از سطح فعال تویین- 60 اصلاح شد.برای اطمینان از انجام اصلاح سطح و مطالعه ساختار،آزمون‌های BET و DLS انجام شد. در نتیجه با افزودن سطح فعال با غلظت 15% به نانوزئولیت به‌دلیل اصلاح سطح، میزان جذب رنگزا افزایش و فرآیند بهبود یافت. همچنین مدل سینتیکی و ایزوترم فرآیند جذب بررسی شد.

کلیدواژه‌ها

عنوان مقاله [English]

Optimization of the process of removal of acidic blue dye -74 from textile wastewater with modified nanozeolite

نویسندگان [English]

  • Laila Qhanavati 1
  • Amir Houshang Hekmati 2
  • Abosaeed Rashidi 1
  • Azizollah Shafiekhani 3
1 PhD Student, Islamic Azad University, Science and Research Branch,
2 , Associate Professor, Islamic Azad University, South Tehran Branch
3 Professor, Public University in Tehran, Alzahra University
چکیده [English]

In this study, the design of the Response Surface Method (RSM) of the Box-Behnken model (BBD) was used by MiniTab-19 software to determine the optimal conditions for the removal of AB-74 dye by nanozeolite in dimensions smaller than 100 nm. Effective parameters such as pH, temperature, dye concentration, stirrer speed and adsorbent dose were investigated in an ANOVA statistical analysis system to study the dye adsorption process. The results showed that with decreasing pH and temperature and concentration, the dye had the highest dye absorption. To remove anionic contaminants and increase the negative ion exchange capacity by nanozeolite, the nanozeolite surface was modified using tween-60 surfactant. BET and DLS tests were performed to ensure the level of correction and study of structure features. Experimental results showed that by adding the tween-60 surfactant with a concentration of 15% to the nanozeolite due to surface modification, the amount of dye adsorption increased. The kinetic model and isotherm model of the adsorption process were also studied and the results showed that the reaction kinetics follows the pseudo-second-order model and adsorption process for nanozeolite and modified nanozeolite follows the Freundlich model.

کلیدواژه‌ها [English]

  • Optimization of the dye adsorption process
  • Wastewater
  • nanozeolite. Acid blue dye-74
  • Surfactant tween-60

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نشریه علمی پژوهشی مهندسی و مدیریت کیفیت
دوره 11، شماره 2
شهریور 1400
صفحه 155-176

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