کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4989980 1456945 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biosynthesized iron-based nanoparticles used as a heterogeneous catalyst for the removal of 2,4-dichlorophenol
ترجمه فارسی عنوان
نانوذرات مبتنی بر آهن غنی شده به عنوان یک کاتالیزور ناهمگن برای حذف 2،4-dichlorophenol
کلمات کلیدی
2،4-دی هوروفنول؛ بیوسنتز؛ آهن مبتنی بر نانوذرات؛ جذب؛ اکسیداسیون مانند فنتون
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
چکیده انگلیسی


- Green synthesis of Fe NPs using Euphorbia cochinchensis leaves extracts.
- The removal efficiency of 2,4-DCP reached up to 64.0% using FeNPs.
- The removing 2,4-DCP via pre-adsorption/Fenton-like oxidation.
- The proposed method is one of potential techniques for the nanoremediation.

Iron-based nanoparticles (Fe NPs) synthesized by Euphorbia cochinchensis leaves extracts and used for degradation of 2,4-dichlorophenol (2,4-DCP) were investigated. The TEM image indicated Fe NPs were spherical and uniformly dispersed particles with a diameter of about 100 nm. The XPS results indicated Fe NPs consisted mainly of Fe(III), Fe(II), iron oxide and hydroxide. Results confirmed that the efficiency to remove 2,4-DCP was 20.6% by adsorption. The efficiency increased to 51.9% when Fe NPs were used as Fenton-like catalyst in the presence of H2O2. However, the removal efficiency of 2,4-DCP reached up to 64.0% when adsorption and Fenton-like oxidation were integrated. The kinetic data fitted well with the pseudo-second-order kinetic model of adsorption, while the Fenton-like process fitted the pseudo-first-order oxidation model. Furthermore, the degraded products were detected by gas chromatography mass spectrometry (GC-MS) to verify the mechanisms of degradation. It is concluded that removal of 2,4-DCP via adsorption/Fenton-like oxidation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 175, 24 March 2017, Pages 222-228
نویسندگان
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