کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
682939 888993 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adsorptive removal of Cd(II) from aqueous solution using natural and modified rice husk
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Adsorptive removal of Cd(II) from aqueous solution using natural and modified rice husk
چکیده انگلیسی

In this study, the natural and modified rice husk were tested to remove Cd(II) ions from water. The modified rice husk was prepared by being treated with alkali. The results showed the Cd(II) adsorption capacity was 73.96, 125.94 mg/g, respectively, for the natural and modified rice husk. The modified rice husk had faster kinetics and higher adsorption capacities than the natural rice husk, which can be attributed to the surface structural changes of the material. Equilibrium adsorption data are more consistent with the Langmuir isotherm equation than with the Freundlich equation. The Cd(II) adsorption on the two adsorbents tends to increase with the increase of pH. The optimum pH for Cd(II) adsorption is 6.5. Both pseudo-first-order and pseudo-second-order equations were able to describe properly the kinetics of Cd(II) adsorption. The desorbability of Cd(II) is about 95.8–99.1% by 0.1 M HCl solution.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 101, Issue 14, July 2010, Pages 5175–5179
نویسندگان
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