کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6386382 | 1627029 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Measuring the reactivity of commercially available zero-valent iron nanoparticles used for environmental remediation with iopromide
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Measuring the reactivity of commercially available zero-valent iron nanoparticles used for environmental remediation with iopromide Measuring the reactivity of commercially available zero-valent iron nanoparticles used for environmental remediation with iopromide](/preview/png/6386382.png)
چکیده انگلیسی
Iopromide was rapidly dehalogenated by the investigated nZVI particles, following pseudo-first-order reaction kinetics that was independent of the experimental conditions. The specific surface area normalized reaction rate constant (kSA) value in the batch reactors ranged between 0.12 and 0.53 L mâ 2 hâ 1; it was highest for the uncoated Nanofer 25 particles, followed by the polyacrylic acid-coated Nanofer 25S and air-stable Nanofer Star particles. In the batch reactors all particles were less reactive in natural water than in synthetic water. The kSA values derived from the column reactor experiments were about 1000 times lower than those from the batch reactors, ranging between 2.6 Ã 10â 4 and 5.7 Ã 10â 4 L mâ 2 hâ 1. Our results revealed that the easy-to-handle and air-stable Nanofer Star particles are the least reactive of all the Nanofer products tested. The reaction kinetics predicted by column experiments were more realistic than those predicted by batch experiments and these should therefore be used when designing a full-scale field application of nanomaterials for environmental remediation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Contaminant Hydrology - Volume 181, October 2015, Pages 36-45
Journal: Journal of Contaminant Hydrology - Volume 181, October 2015, Pages 36-45
نویسندگان
Doris Schmid, Vesna MiciÄ, Susanne Laumann, Thilo Hofmann,