کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9468185 | 1316986 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Biosorption of La, Eu and Yb using Sargassum biomass
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
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چکیده انگلیسی
Biosorption of the lanthanides: Lanthanum (La3+), Europium (Eu3+) and Ytterbium (Yb3+) from single-component and multi-component batch systems using Sargassum polycystum Ca-loaded biomass was studied. The ion exchange sorption mechanism was confirmed by the release of calcium ions from the biomass that matched the total number of metal and protons removed from the solution. The metal binding increased with pH due to the decrease of proton concentration in the system, as they also compete for the binding sites. The maximum metal uptake capacity for pH 3, 4 and 5 ranged approximately between (0.8-0.9) mmol gâ1 for La (0.8-0.9) mmol gâ1 for Eu, and (0.7-0.9) mmol gâ1 for Yb. Biosorption from multi-component mixtures was examined at pH 4 using equimolar initial concentrations of the metals. The metal affinity sequence established was Eu>La>Yb, and the maximum metal uptake obtained was 0.29, 0.41, 0.28 mmol gâ1 for La, Eu and Yb, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 39, Issue 1, January 2005, Pages 239-247
Journal: Water Research - Volume 39, Issue 1, January 2005, Pages 239-247
نویسندگان
Vivian Diniz, Bohumil Volesky,