کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6326162 1619749 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Transport and deposition of stabilized engineered silver nanoparticles in water saturated loamy sand and silty loam
ترجمه فارسی عنوان
حمل و نقل و انباشت نانوذرات نقره ای مهندسی شده تثبیت شده در ماسه لومیا اشباع شده و لوم سیلتی
کلمات کلیدی
نانوذرات مهندسی، خاک حمل و نقل و نگهداری، مدلسازی حمل و نقل،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی
It is considered inevitable that the increasing production and application of engineered nanoparticles will lead to their release into the environment. However, the behavior of these materials under environmentally relevant conditions is still only poorly understood. In this study the transport and deposition behavior of engineered surfactant stabilized silver nanoparticles (AgNPs) in water saturated porous media was investigated in transport experiments with glass beads as reference porous medium and in two natural soils under various hydrodynamic and hydrochemical conditions. The transport and retention processes of AgNPs in the porous media were elucidated by inverse modeling and possible particle size changes occurring during the transport through the soil matrix were analyzed with flow field-flow fractionation (FlFFF). A high mobility of AgNPs was observed in loamy sand under low ionic strength (IS) conditions and at high flow rates. The transport was inhibited at low flow rates, at higher IS, in the presence of divalent cations and in a more complex, fine-grained silty loam. The slight decrease of the mean particle size of the AgNPs in almost all experiments indicates size selective filtration processes and enables the exclusion of homoaggregation processes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volume 535, 1 December 2015, Pages 102-112
نویسندگان
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