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Vahid Fard, Vahid, Shayesteh, Keivan, Abbasi, Pourya, Khani, Mohammad Javad. (1401). The Impact of Different Initial Concentrations of Co, Fe, Mn and KMnO4 on the Efficiency of Cobalt Removal from Zinc Electrolyte Solution. فصلنامه علمی زیست فناوری گیاهان زراعی, 9(2), 58-65. doi: 10.30473/ijac.2023.61160.1210
Vahid Vahid Fard; Keivan Shayesteh; Pourya Abbasi; Mohammad Javad Khani. "The Impact of Different Initial Concentrations of Co, Fe, Mn and KMnO4 on the Efficiency of Cobalt Removal from Zinc Electrolyte Solution". فصلنامه علمی زیست فناوری گیاهان زراعی, 9, 2, 1401, 58-65. doi: 10.30473/ijac.2023.61160.1210
Vahid Fard, Vahid, Shayesteh, Keivan, Abbasi, Pourya, Khani, Mohammad Javad. (1401). 'The Impact of Different Initial Concentrations of Co, Fe, Mn and KMnO4 on the Efficiency of Cobalt Removal from Zinc Electrolyte Solution', فصلنامه علمی زیست فناوری گیاهان زراعی, 9(2), pp. 58-65. doi: 10.30473/ijac.2023.61160.1210
Vahid Fard, Vahid, Shayesteh, Keivan, Abbasi, Pourya, Khani, Mohammad Javad. The Impact of Different Initial Concentrations of Co, Fe, Mn and KMnO4 on the Efficiency of Cobalt Removal from Zinc Electrolyte Solution. فصلنامه علمی زیست فناوری گیاهان زراعی, 1401; 9(2): 58-65. doi: 10.30473/ijac.2023.61160.1210

The Impact of Different Initial Concentrations of Co, Fe, Mn and KMnO4 on the Efficiency of Cobalt Removal from Zinc Electrolyte Solution

Iranian Journal of Analytical Chemistry
دوره 9، شماره 2 - شماره پیاپی 18، آذر 2022، صفحه 58-65    اصل مقاله (1.89 M)
نوع مقاله: Full research article
شناسه دیجیتال (DOI): 10.30473/ijac.2023.61160.1210
نویسندگان
Vahid Vahid Fard؛ Keivan Shayesteh* ؛ Pourya Abbasi؛ Mohammad Javad Khani
Department of Chemical Engineering, University of Mohaghegh Ardabili, Ardabil, Iran
چکیده
Removal of cobalt from zinc electrolyte solution is one of the most important and difficult steps in zinc production using hydrometallurgy method. The impact of initial concentrations of cobalt, manganese, and Fe and amounts of potassium permanganate on the efficiency of cobalt removal by potassium permanganate from zinc electrolyte solution was investigated in this research. The results indicated that the higher the initial concentration of cobalt, manganese, and Fe is, the lower the cobalt removal amount will be; however, as the amount of potassium permanganate increases, the efficiency of cobalt removal will enhance. It was also found that, in order to make a permissible level of the dissolved cobalt, the consumption of potassium permanganate should be increased as the concentration of cobalt, Fe, and manganese increases. If the concentration of manganese is more than 500 mg/L, it can impact the reduction of the efficiency of cobalt removal to a great extent; but when the initial concentration of cobalt is high, the significance of the impact of the initial amounts of manganese would decrease. Additionally, if the manganese concentration is less than 200 mg/L, the optimal removal of cobalt (less than 2 ppm) will not occur under any circumstances. The results also indicate that if the potassium permanganate concentration is 1 g/L or lower, the Fe ions in the solution will drastically reduce the cobalt removal efficiency.
کلیدواژه‌ها
Synthetic sulfate solution؛ Cobalt removal؛ Manganometry method؛ Design expert؛ Optimization
عنوان مقاله [English]
تأثیر غلظت‌های اولیه مختلف کبالت، آهن، منگنز و پرمنگنات‌پتاسیم بر راندمان حذف کبالت از محلول الکترولیت روی
نویسندگان [English]
وحید وحید فرد؛ کیوان شایسته؛ پوریا عباسی؛ محمدجواد خانی
دانشکده مهندسی شیمی، دانشگاه محقق اردبیلی، اردبیل، ایران
چکیده [English]
حذف کبالت از محلول الکترولیت روی یکی از مهمترین و دشوارترین مراحل تولید روی با استفاده از روش هیدرومتالورژی است. در این تحقیق، تاثیر غلظت اولیه کبالت، منگنز و آهن و مقادیر پرمنگنات پتاسیم بر راندمان حذف کبالت توسط پرمنگنات پتاسیم از محلول الکترولیت روی، مورد بررسی قرار گرفت. نتایج نشان داد که هر چه غلظت اولیه کبالت، منگنز و آهن بیشتر باشد، میزان حذف کبالت کمتر خواهد بود. با این حال، با افزایش میزان پرمنگنات پتاسیم، راندمان حذف کبالت افزایش می یابد.
همچنین مشخص شد که برای رسیدن به حد مجاز کبالت در محلول، مصرف پرمنگنات­پتاسیم باید با افزایش غلظت کبالت، آهن و منگنز افزایش یابد. اگر غلظت منگنز بیش از 500 میلی­گرم در لیتر باشد، می تواند تا حد زیادی بر کاهش راندمان حذف کبالت تأثیر بگذارد؛ اما زمانی که غلظت اولیه کبالت بالا باشد، اهمیت تاثیر مقادیر اولیه منگنز کاهش می­یابد. علاوه بر این، اگر غلظت منگنز کمتر از 200 میلی­گرم در لیتر باشد، حذف بهینه کبالت (کمتر از 2 پی­پی­ام) تحت هیچ شرایطی اتفاق نمی­ افتد.
نتایج همچنین نشان می­دهد که اگر غلظت پرمنگنات پتاسیم 1 گرم در لیتر یا کمتر باشد، یون آهن موجود در محلول راندمان حذف کبالت را به­ شدت کاهش می­ دهد.
کلیدواژه‌ها [English]
محلول مصنوعی, حذف کبالت, روش منگانومتری, روش دیزاین اکسپرت, بهینه‌سازی
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