کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6302490 | 1618040 | 2013 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kinetics, equilibrium and mechanism of Cu2+, Ni2+ and Zn2+ ions biosorption using wheat straw
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Kinetics, equilibrium and mechanism of Cu2+, Ni2+ and Zn2+ ions biosorption using wheat straw Kinetics, equilibrium and mechanism of Cu2+, Ni2+ and Zn2+ ions biosorption using wheat straw](/preview/png/6302490.png)
چکیده انگلیسی
The kinetics of adsorption is described by a pseudo-second order reaction kinetic model, allowing the determination of kinetic parameters for each of the considered metal ions. The ion exchange mechanism was confirmed assuming that the alkali-earth metals (mostly calcium), from wheat straw, are substituted by the considered heavy metal ions and protons. For a single metal ion system, the adsorption equilibrium data can be modeled by the Langmuir adsorption isotherm for all considered ions. The maximum adsorption capacity of 5 mg gâ1 was achieved for copper ions, while the adsorption capacity for nickel and zinc ions was 2.5 mg gâ1 and 3.25 mg gâ1, respectively. The obtained results show that wheat straw can be successfully used as an adsorbent for the adsorption of Cu2+, Zn2+ and Ni2+ ions from weakly acidic effluents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Engineering - Volume 58, September 2013, Pages 113-122
Journal: Ecological Engineering - Volume 58, September 2013, Pages 113-122
نویسندگان
Milan Gorgievski, Dragana BožiÄ, Velizar StankoviÄ, Nada Å trbac, Snežana Å erbula,