کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6327435 1619766 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of 17β-estradiol on stability and mobility of TiO2 rutile nanoparticles
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Effect of 17β-estradiol on stability and mobility of TiO2 rutile nanoparticles
چکیده انگلیسی
Contaminants including titanium dioxide nanoparticles (n-TiO2), as well as organic wastewater contaminants (OWCs), have been detected in wastewater treatment plant effluents, however, no information is yet available on how OWCs may modify the surface properties of TiO2 nanoparticles, or influence their stability in water and subsequent mobility in porous media. In this study, 17β-estradiol (E2) was chosen as a representative OWC to investigate the interaction between OWCs and n-TiO2. Batch and kinetic sorption experiments and Fourier Transform Infrared (FTIR) Spectrometer measurements confirmed that E2 was quickly sorbed onto the surface of n-TiO2 aggregates in water. Aggregation experiments showed that the presence of E2 has a minor influence on the size of n-TiO2 aggregates under lower ionic strength conditions at natural pH. In high ionic strength solution, the presence of E2 led to an increased average hydrodynamic diameter and a wider distribution of n-TiO2 aggregate sizes. Interaction energy analyses indicated that steric repulsion likely contributed to the stability of the n-TiO2 suspension in the presence of E2. Mobility analysis based on the clean bed filtration theory indicated that the impact of E2 on the mobility of n-TiO2 in porous media is minimal in comparison to the influence of solution ionic strength.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volume 511, 1 April 2015, Pages 195-202
نویسندگان
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