کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
595719 | 1454023 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Se(IV) sorption on TiO2: Sorption kinetics and surface complexation modeling
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The sorption of Se(IV) on TiO2 (anatase) was investigated as functions of contact time, pH, ionic strength, solid-to-liquid ratio (m/V) and Se(IV) concentration by using a batch sorption method. It was found that the sorption kinetics of Se(IV) can be described by a pseudo-second-order model. Both the amount of Se(IV) sorbed at equilibrium and the pH of aqueous solution affect the rate constant of Se(IV) sorption on anatase. The results at sorption equilibrium indicate that Se(IV) sorption is pH-dependent and insensitive to ionic strength. A constant capacitance model was used to quantitatively interpret Se(IV) sorption on anatase. Inner-sphere surface complexes, SSeO3− and S2SeO3, were considered.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 349, Issues 1–3, 5 October 2009, Pages 90–95
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 349, Issues 1–3, 5 October 2009, Pages 90–95
نویسندگان
Keliang Shi, Xuefeng Wang, Zhijun Guo, Shengrong Wang, Wangsuo Wu,