اصلاح خواص جداسازی و ساختاری غشای نانوفیلتراسیون بر پایه پلی‌اتر‌سولفون با استفاده از نانوذرات سولفونه‌شده اکسید‌سیلیس

نوع مقاله: مقاله پژوهشی

نویسندگان

گروه مهندسی شیمی، دانشکده فنی مهندسی، دانشگاه اراک، ایران

چکیده

در این پژوهش، غشاهای نانوکامپوزیتی بر پایه پلی‌اتر‌سولفون و با استفاده از نانوذرات سولفونه‌شده اکسید‌سیلیس (SiO2-SO3H) به‌کمک روش تغییر فاز ساخته شد. از پلیمر پلی‌وینیل پیرولیدن به‌عنوان حفره ساز و از دی‌متیل‌استآمید به‌عنوان حلال، در ساخت محلول پلیمری استفاده شد. اثر غلظت‌های مختلف نانوذرات در محلول پلیمری بر عملکرد جداسازی غشاها مورد ارزیابی قرار گرفت. جهت ارزیابی ساختار غشاها از عکس‌برداری الکترونی میکروسکوپی و میکروسکوپ نوری استفاده شد. نتایج به‌دست آمده نشان داد با افزایش نانو‌ذره سیلیکای سولفونه‌شده میزان بهبود قابل توجهی در میزان شار عبوری و پس‌دهی غشاهای اصلاح شده حاصل گردید و مقاومت مکانیکی غشاهای اصلاح شده بین 15 تا 25% نیز افزایش یافت. عملکرد بهینه برای غشا حاوی 1/0% نانو ذره با افزایش شار 200% نسبت به غشای اصلاح نشده و میزان پس‌دهی 70% به‌دست آمد. همچنین نسبت کاهش شار این نمونه که بیانگر خاصیت ضدگرفتگی آن است حدود 14/7 بود که در مقایسه با نمونه فاقد نانو ذره 75% کاهش داشته است.
 

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Modification the Separation and Structural Properties of PES Based Nanofiltration Membrane Using Sulfonated Silicon Dioxide Nanoparticles

نویسندگان [English]

  • Abdolreza Moghadassi
  • Mahboubeh Ahmarinejad
  • Fahime Parvizian
  • Sayed Mohsen Hosseini
  • Ehsan Bagheripour
Department of Chemical Engineering, Faculty of Engineering, Arak University, Iran
چکیده [English]

In this study, nanocomposite PES based membranes were prepared by using sulfonated silicon dioxide (SiO2-SO3H) nanoparticles through phase inversion method. PVP and N-N-dimethylacetamide were used as pore former and solvent respectively. The effect of nanoparticles’ concentration on the separation performance of prepared membranes was studied. The structures of membranes were investigated by scanning electron microscopy (SEM) and scanning optical microscopy (SOM). Obtained results showed modified membranes had significant improvements in flux and rejection with increasing sulfonated silicon dioxide nanoparticles. Also, the tensile strength increased in the range of 15 to 25% for prepared membranes containing naniparticles.  Results showed that nanocomposite membrane containing 0.1 wt.% SiO2-SO3H nanoparticles has an increase in the flux of 200% compared to the unmodified membrane and salt rejection of 75%. Also, the flux decreased the ratio of the optimum sample was 7.14 that showed better antifouling properties with decreasing of 75% relative to the PES one.
 

کلیدواژه‌ها [English]

  • Membrane
  • Nanofiltration
  • Polyether Sulfone
  • Sulfonated Silicon Dioxide Nanoparticles
  • Desalination

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