نوع مقاله : مقاله پژوهشی کامل
نویسندگان
گروه شیمی، دانشگاه آزاد اسلامی، یزد، ایران
10.30473/ijac.2026.78544.1349
چکیده
ناخالصیهای فلوراید در الکترولیتهای صنعتی سولفات روی با افزایش رسوب روی روی کاتد آلومینیوم، بر فرآیند الکترووینینگ روی تأثیر منفی میگذارند و در نتیجه راندمان فرآیند و کیفیت محصول را کاهش میدهند. در مطالعه حاضر، اکسید زیرکونیوم (ZrO2) به عنوان جاذب برای حذف فلوراید از محلول سولفات روی در طول فرآیند الکترولیز صنعتی تولید روی استفاده شده است. تأثیر پنج پارامتر عملیاتی، شامل دوز ZrO2، دما، زمان تماس، سرعت هم زدن و pH، به طور سیستماتیک برای بهینهسازی فرآیند حذف فلوراید ارزیابی شد. غلظت اولیه سولفات روی و فلوراید در الکترولیت به ترتیب 210 گرم در لیتر و 453 میلیگرم در لیتر (ppm) بود. تحت شرایط عملیاتی بهینه (دوز ZrO2 2.0 گرم در لیتر، دمای 90 درجه سانتیگراد، زمان تماس 20 دقیقه، سرعت هم زدن 200 دور در دقیقه و همچنین pH 7)، بیش از 90٪ فلوراید از الکترولیت سولفات روی حذف شد. علاوه بر این، تحت شرایط عملیاتی صنعتی نشان داده شد که غلظت فلوراید میتواند به کمتر از ۵۵ میلیگرم در لیتر (ظرفیت جذب = ۲۰۰ میلیگرم در گرم) کاهش یابد، که به طور قابل توجهی مشکلات عملیاتی مرتبط با الکترووینینگ روی را کاهش میدهد. این یافتهها نشان میدهند که نانوپودر ZrO2 یک جاذب کارآمد و کاربردی برای حذف فلوراید از الکترولیتهای سولفات روی صنعتی است و پتانسیل قابل توجهی برای کاربرد صنعتی دارد.
کلیدواژهها
موضوعات
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