الیگومر کلیکس[4] رزورسین آرن اصلاح شده به عنوان جاذب در جذب رنگزا: بررسی شرایط بهینه جذب

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه شیمی، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران، صندوق پستی: 1915

2 گروه شیمی، واحد علوم و تحقیقات خوزستان، دانشگاه آزاد اسلامی، اهواز، ایران، صندوق پستی: 1915

3 گروه رزین و افزودنی‌ها، پژوهشگاه رنگ، تهران، ایران، صندوق پستی: 654-16765

چکیده

کلیکس[4] رزورسین آرن از گروه کلیکس‌آرن‌ها هستند که از واکنش تراکمی رزورسینول و آلدهیدها در محیط اسیدی ساخته می‌شوند. این ترکیبات می‌توانند میزبان مناسبی برای کاتیون‌ها، آنیون‌ها یا مولکول‌های خنثی باشند. با اصلاح و ایجاد گرو‌های جانبی می‌توان جذب انتخابی را در آنها بوجود آورد. این تحقیق به بررسی شرایط بهینه جذب ماده رنگزای کاتیونی آبی 41 توسط الیگومر کلیکس[4] رزورسین آرن اصلاح شده می‌پردازد. برای تعیین شرایط بهینه از طراحی آزمایش به روش سطح پاسخ با سه متغیر مقدار جاذب، زمان و pH استفاده شد. نتایج نشان داد که در جذب رنگزا به وسیله الیگومر کلیکس[4] رزورسین آرن اصلاح شده بیشترین اثر خطی مثبت مربوط به ماده جاذب و سپس زمان انجام فرآیند جذب می‌باشد و pH تاثیر چندانی ندارد. همچنین برای دستیابی به جذب بالای 61 درصد به مقدار 3،9 درصد وزنی از ماده جاذب و در زمان 180 دقیقه و یا 5 درصد وزنی ماده جاذب در مدت زمان 127 دقیقه لازم است. همچنین با نمودار کانتور بدست آمده، می‌توان بازده جذب را با مقدار جاذب و زمان پیش‌بینی کرد.

کلیدواژه‌ها

عنوان مقاله [English]

Modified Calix[4] Resorcinarenes Oligomer as Adsorbent in Dye Adsorption: Investigation of Optimal Adsorption Conditions

نویسندگان [English]

  • A. Barekat 1 2
  • B. Shirkavand Hadavand 3
  • A. Rayatzadeh 1
  • R. Badri 1
1 Department of Chemistry, Ahvaz Branch, Islamic Azad University, P. O. Box: 1915, Ahvaz, Iran
2 Department of Chemistry, Khuzestan Science and Research Branch, Islamic Azad University, P.O.Box: 1915, Ahvaz, Iran
3 Department of Resin and Additives, Institute for Color Science and Technology, P.O.Box: 16765-654, Tehran, Iran
چکیده [English]

Calix [4] resorcinarene belongs to the calixarenes group. Calix is synthesized via a condensation reaction of resorcinol and aldehydes in acidic conditions. These compounds can be suitable hosts for cations, anions, or neutral molecules. Selective absorption can be created in them by modifying and creating side groups. This research decided to study the optimal conditions for the absorption of cationic blue 41 dye by modified calix[4] resorcinarene oligomer. The optimal conditions were determined using the response surface methodology with three variables: adsorbent amount, time, and pH. The results showed that in the adsorption of dye by modified calix[4], resorcinarene oligomer is the most positive linear effect related to the adsorbent, followed by the time of adsorption process; however, pH has little effect. Also, for more than 61 % absorption, 3.9 % by weight of the adsorbent is required in 180 minutes or 5 % by weight in 127 minutes. Also, with the obtained contour diagram, the adsorption efficiency can be predicted with the amount of adsorbent and time.

کلیدواژه‌ها [English]

  • Calix[4] resorcinarene
  • Chemical modification
  • Dye adsorption
  • Experimental design

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