کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7044018 | 1456925 | 2018 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of the effects of nanoparticle size on CO2 absorption by silica-water nanofluid
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Using nanofluids as absorbent is a novel technique for the enhancement of mass transfer in gas absorption process. In this article, a bubble column absorption system was used to investigate the effects of nanoparticle size on carbon dioxide (CO2) absorption in silica/water nanofluid. In the experimental setup, CO2 was injected as frequent bubbles from the bottom of the column containing silica/water nanofluid with different particle sizes of 10.6, 20, 38.6, and 62â¯nm. The rate of carbon dioxide absorption in silica-water nanofluid increased with nanoparticle size and maximum absorption rate or molar flux was obtained at 0.01â¯wt% of nanoparticles for all nanofluids with different nanoparticles sizes. Mass transfer parameters including diffusion coefficient, renewal surface rate and thickness of diffusion layer within liquid was also investigated at different nanoparticle sizes. The results show that by increment of nanoparticle size, the renewal surface rate increased while diffusivity and liquid-film thickness decreased. Consequently, Mass transfer coefficients increased by increment of nanoparticle size. Finally a new correlation was proposed incorporating nanoparticle diameter for estimating mass transfer coefficient.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 195, 29 April 2018, Pages 208-215
Journal: Separation and Purification Technology - Volume 195, 29 April 2018, Pages 208-215
نویسندگان
Mohammad Hossein Karimi Darvanjooghi, Mohsen Nasr Esfahany, Seyyed Hamid Esmaeili-Faraj,