مروری بر جداسازی نانوذرات با روش شناورسازی کف

نوع مقاله : مقالات مروری

نویسندگان

استادیار، گروه مهندسی شیمی، دانشگاه تفرش، تفرش 79611-39518، ایران

چکیده

شناورسازی کف، یک روش مؤثر برای جداسازی ذرات جامد ریز از محلول‌های آبی بر اساس خواص سطحی است. مهم‌ترین پدیده این بحث، تشکیل یک تجمع جامد-حباب گاز است. انتخاب مناسب شرایط عملیاتی مانند اندازه، شکل، بار و آب‌گریزی نانوذرات، غلظت، pH محلول، دبی و سرعت گاز، اندازه حباب و معرف‌های شناورسازی مانند سورفکتانت‌ها برای آب‌گریز کردن ذرات به‌منظور افزایش جذب توسط حباب‌های گاز و جمع‌آوری آنها در کف ضروری است. در این پژوهش سعی شد تا پتانسیل و محدودیت‌های موجود برای فرایند شناورسازی نانوذرات و جداسازی آنها از محلول‌ها و یا به‌کارگیری نانوذرات به‌عنوان جمع‌کننده، تقویت‌کننده و تثبیت‌کننده کف شناورسازی بررسی شود و چالش‌های موجود و راهکارهای فائق آمدن بر آنها تبیین شوند. با توجه به پیشرفت‌های انجام شده در حوزه تجهیزات و معرف‌های استفاده شده، روش شناورسازی، روشی امیدوارکننده برای حذف، جداسازی، بازیابی و خالص‌سازی نانوذرات از محلول خواهد بود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

A Review on the Separation of Nanoparticles by Froth Flotation

نویسندگان [English]

  • Meisam Abdolkarimi-Mahabadi
  • Ahmad Bayat
Assist. Prof., Dept. of Chemical Engineering, Tafresh University, Tafresh 39518-79611, Iran
چکیده [English]

Froth flotation is an effective method for separating fine solid particles from aqueous solutions based on surface properties. The most important phenomenon in this issue is the formation of solid-gas bubble accumulation. Appropriate selection of operating conditions such as size, shape, charge and hydrophobicity of nanoparticles, concentration, pH solution, flow rate and gas velocity, bubble size and flotation reagents such as surfactants for hydrophobicizing particles is essential to increase absorption by gas bubbles and collect them in the froth. In this article, an attempt has been made to examine the potential and limitations of the process of flotation of nanoparticles and their separation from solutions, or the use of nanoparticles as collectors, reinforcements and stabilizers of the froth, and the existing challenges and solutions to overcome them should be explained. According to the progress made in the field of equipment and reagents used, the flotation method could be a promising method to remove, separate, recover and purify nanoparticles from the solution.

کلیدواژه‌ها [English]

  • Purification
  • Separation
  • Flotation
  • Surfactant
  • Nanoparticles

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مجله آب و فاضلاب
دوره 34، شماره 3 - شماره پیاپی 146
مرداد و شهریور 1402
صفحه 104-124

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