نشریه مهندسی معدن

نشریه مهندسی معدن

بررسی تاثیر نقش نونیل فنول اتوکسیلات بر شار و پایداری غشا پلیمری حاوی D2EHPA در استخراج اورانیوم از فسفریک اسید

نوع مقاله : علمی - پژوهشی

نویسندگان
1 دانشکده مهندسی معدن و متالورژی،دانشگاه یزد
2 استادیار دانشکده مهندسی معدن و متالورژی، دانشگاه یزد
3 استادیار علمی گروه مهندسی شیمی پلیمر ،دانشگاه یزد
چکیده
در این تحقیق اثر نرم­کننده‌ نونیل فنول اتوکسیلات بر روی شار و پایداری غشای درون پلیمری حاوی دی (2- اتیل هگزیل) اسید فسفریک (D2EHPA) به عنوان استخراج­کننده و پلی­وینیل کلرید PVC به عنوان ماتریس پلیمری در استخراج اورانیوم مورد مطالعه قرار گرفت. از طراحی آزمایش و الگوی Combine Design برای ارزیابی اثرات محتوای استخراج­کننده و میزان نرم­کننده غشا، غلظت اسید در محلول بار اولیه و دریافت، غلظت اولیه اورانیوم و دور همزن استفاده شد. نتایج نشان داد که نزدیک به 86 درصد از اورانیوم با استفاده از یک غشا درون پلیمری متشکل از 39 درصد D2EHPA، 5 درصد NPE و 56 درصد PVC استخراج شد. همچنین در اثر افزودن نونیل فنول اتوکسیلات، شار و درصد حذف یون به میزان قابل توجهی نسبت به غشا 45% D2EHPA / 55% PVC افزایش یافته که به دلیل بهبود آبدوستی غشا است. در نهایت نتایج پایداری نشان داد که با وجود کاهش پایداری بعد از 5 سیکل، نفوذ­پذیری غشا در حضور نرم­کننده نونیل فنول اتوکسیلات به مراتب از غشا 45% D2EHPA / 55% PVC بهتر است که این موضوع اهمیت استفاده از نرم­کننده را نشان می‌دهد.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Investigation of the Effect of Nonylphenol Ethoxylate on the Flux and Stability of D2EHPA Containing Polymer Membranes in the Extraction of Uranium from Phosphoric Acid

نویسندگان English

Mehdi ashtiani far 1
«Khodakaram Gharibi 2
zahra daneshfar 3
2 University of Yazd / Assistant of proofer
چکیده English

This study investigates the effect of nonylphenol ethoxylate (NPE) as a plasticizer on the flux and stability of a polymeric membrane containing di(2-ethylhexyl) phosphoric acid (D2EHPA) for uranium extraction from phosphoric acid. A combined design experimental approach was employed to evaluate the impacts of extractant content, plasticizer amount, acid concentration in the feed solution, initial uranium concentration, and stirring speed. The results demonstrate that approximately 86% of uranium can be extracted using a polymeric membrane composed of 39% D2EHPA, 5% NPE, and 56% PVC. Adding NPE significantly enhances both flux and ion removal percentage compared to a membrane with 45% D2EHPA and 55% PVC due to improved hydrophilicity. Stability tests revealed that although there is a decrease in stability after five cycles, the permeability of the membrane with NPE is considerably better than that of the 45% D2EHPA / 55% PVC membrane.

کلیدواژه‌ها English

Nonylphenol ethoxylate
plasticizer
di(2-ethylhexyl) phosphoric acid
polymeric membrane
phosphoric acid
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  • تاریخ دریافت 14 شهریور 1403
  • تاریخ بازنگری 15 دی 1403
  • تاریخ پذیرش 17 فروردین 1404