کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7043723 | 1456918 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced removal of mixed metal ions from aqueous solutions using flotation by colloidal gas aphrons stabilized with sodium alginate
ترجمه فارسی عنوان
حذف پیشرفته یون های مخلوط فلزات از محلول های آبی با استفاده از فلوتاسیون توسط فلوئور گاز کلوئیدی که با آلژینات سدیم تثبیت شده است
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کلمات کلیدی
سورفاکتانت، فروغ گاز کلوئیدی، آلژینات سدیم، شناور یون فلزات سنگین،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
چکیده انگلیسی
Anionic surfactant sodium dodecyl benzenesulfonate (SDBS) was used to prepare colloidal gas aphrons (CGAs). Bio-polymeric sodium alginate was added to enhance the removal efficiencies of mixed metal ions such as lead (Pb2+) and copper (Cu2+) from aqueous solutions via flotation. Stirring speed of 3000â¯rpm was maintained to produce CGAs containing 500â¯mL surfactant solutions. The effects of concentration of metal ions, volume of liquid in the flotation column, CGAs loading rate, and pH of solution on the removal of heavy metals were examined. CGAs loading rate of 6.1â¯cm/min (flow rate 120â¯cm3/min) to the flotation column containing 2.0â¯mM of mixed metal ions (0.4â¯mM of Pb2+ and 1.5â¯mM of Cu2+ ions) at pH 5.35 gave the maximum removal of 96% for Pb2+ ions and 81% for Cu2+ ions. However, the net amount of copper ions removed was much higher than the lead ions. Addition of calcium chloride to the retentate solution further increased the removal to be 99% for Pb2+ and 92% for Cu2+ by producing alginate gel with metal ions that precipitated out from the solutions. Interestingly, sodium alginate stabilized CGAs improved significantly the removal of metal ions from aqueous solutions by flotation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 202, 31 August 2018, Pages 103-110
Journal: Separation and Purification Technology - Volume 202, 31 August 2018, Pages 103-110
نویسندگان
Aiza Gay Corpuz, Priyabrata Pal, Fawzi Banat, Mohammad Abu Haija,