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Fluoride Removal from Zinc Sulfate Solution by Nanopowder Zirconium Oxide in Industrial Electrolysis Process of Zinc Production | ||
| Iranian Journal of Analytical Chemistry | ||
| دوره 12، شماره 2 - شماره پیاپی 24، آذر 2025، صفحه 120-128 اصل مقاله (748.19 K) | ||
| نوع مقاله: Full research article | ||
| شناسه دیجیتال (DOI): 10.30473/ijac.2026.78544.1349 | ||
| نویسندگان | ||
| Mohammad Bagi؛ Masoumeh Tabatabaee* ؛ Ali Sheibani | ||
| Department of Chemistry, Ya.C., Islamic Azad University, Yazd, Iran | ||
| چکیده | ||
| Fluoride impurities in industrial zinc sulfate electrolytes adversely affect the zinc electrowinning process by promoting zinc deposition on the aluminum cathode, thereby reducing process efficiency and product quality. In the present study, zirconium oxide (ZrO2) has been used as an adsorbent to remove fluoride of zinc sulfate solution during the industrial electrolysis process of zinc production. The effects of five operational parameters, including ZrO2 dosage, temperature, contact time, stirring speed and pH were systematically evaluated to optimize the fluoride removal process. The initial concentrations of zinc sulfate and fluoride in the electrolyte were 210 g/L and 453 mg/L (ppm), respectively. Under the optimum operating conditions (ZrO2 dosage of 2.0 g/L, temperature of 90 °C, contact time of 20 min, stirring speed of 200 rpm, and also pH 7), more than 90% of the fluoride was removed from the zinc sulfate electrolyte. Moreover, under industrial operating conditions demonstrated that the fluoride concentration could be reduced to below 55 mg/L (adsorption capacity=200 mg/g), significantly alleviating operational problems associated with zinc electrowinning. These findings demonstrate that ZrO2 nanopowder is an efficient and practical adsorbent for fluoride removal from industrial zinc sulfate electrolytes and has considerable potential for industrial application. | ||
| کلیدواژهها | ||
| Fluoride removal؛ zirconium oxide (ZrO2)؛ zinc sulfate؛ Zinc Production | ||
| عنوان مقاله [English] | ||
| حذف فلوئور از محلول روی سولفات با نانو پودر زیرکونیم اکسید در فرایند الکترولیز تولید روی صنعتی | ||
| نویسندگان [English] | ||
| محمد جواد بگی؛ معصومه طباطبایی؛ علی شیبانی | ||
| گروه شیمی، دانشگاه آزاد اسلامی، یزد، ایران | ||
| چکیده [English] | ||
| 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 [English] | ||
| حذف فلئور, ریرکونیم اکساید, روی سولفات, تولید روی | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 6 تعداد دریافت فایل اصل مقاله: 10 |
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