سازوکار انتقال یون های توریم (IV) از طریق غشای درون گیره در پلیمر دارای دی- (2- اتیل‌هگزیل) فسفریک اسید به‌عنوان حامل

علمدار میلانی, سعید; اعرابی, حمیدرضا

سازوکار انتقال یون های توریم (IV) از طریق غشای درون گیره در پلیمر دارای دی- (2- اتیل‌هگزیل) فسفریک اسید به‌عنوان حامل

نوع مقاله : علمی-پژوهشی

نویسندگان

¹ پژوهشکده مواد و چرخه‌ی سوخت هسته‌ای، پژوهشگاه علوم وفنون هسته‌ای، سازمان انرژی اتمی ایران، تهران- ایران.

² دانشکده‌ مهندسی شیمی، پردیس دانشکده‌های فنی، دانشگاه تهران، تهران- ایران.

چکیده

این مطالعه، تحلیلی از سازوکار انتقال یون های توریم (IV) در یک غشای درون گیره در پلیمر (PIM) ارایه می‌دهد. یک PIM دارای پلی وینیل کلرید (PVC) به عنوان پلیمر پایه، و دی- (2- اتیل هگزیل) فسفریک اسید (EHPA₂D) به عنوان حامل مورد استفاده قرار گرفت. اول از همه، تاثیر غلظت حامل به عنوان یک پارامتر مهم در فرایند انتقال مورد بررسی قرارگرفت. همچنین پارامترهای فاز آبی شامل غلظت اولیه ی توریم (IV) و pH فاز خوراک، غلظت اسید در فاز عریان ساز بررسی شد. صرف نظر از غلظت اولیه ی توریم (IV)، برای شرایط آزمایش، 45 درصد وزنی EHPA₂D به عنوان مقدار بهینه ی غلظت حامل، بیشترین اثرات را بر روی فرایند انتقال نشان داد. مطالعات سینتیک و سازوکار انتقال یون های توریم (IV) نشان داد که انتقال یون های توریم (IV) در PIM با معادله ی سینتیکی درجه ی اول سازگار بوده و سازوکار «جهش»، سازوکار غالب در انتقال توریم (IV) در سامانه مورد مطالعه است.

کلیدواژه‌ها

موضوعات

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