| View Larger Image | Elimination of phenol and aromatic compounds by zero valent iron and EDTA at low temperature and atmospheric pressure [An article from: Chemosphere] | Digitalby I. Sanchez (Author), F. Stuber (Author), J. Font (Author), A. Fortuny (Author), Fabreg (Author)
| List Price: | $10.95 | | | Available: | Available for download now |
| | Binding: | Digital | | Publisher: | Elsevier | | Publication Date: | June 01, 2007 |
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Product Description
This digital document is a journal article from Chemosphere, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.Description: This work deals with a new abiotic oxidation process designed as a suitable pre-treatment step within a biological depuration of wastewater containing phenol or its derivatives (o-cresol, 2-chlorophenol and p-nitrophenol) or aniline. The reaction was carried out in a stirred tank reactor at 20^oC and atmospheric pressure in presence of the organic compound, 150mgl^-^1, zero valent iron particles (10g), ethylenediamine tetraacetic acid (EDTA, 101mgl^-^1) and air. The experimental results show that 85% of phenol conversion can be achieved after 360min. 2-Chlorophenol was found to be more easily degradable and it is completely eliminated after 300min. The oxidation of o-cresol and aniline behaved more closely to phenol obtaining after 360min 70% and 68% of conversion respectively. p-Nitrophenol was a very refractory compound, giving only 28% of conversion after 360min. Moreover, the influence of some operating variables was studied over the following ranges: temperature from 20 to 50^oC, initial phenol concentration from 150 to 1000mgl^-^1, EDTA concentration from 50 to 200mgl^-^1 and iron particles from 5 to 20g. As expected, temperature strongly enhances phenol conversion. Also, an increase of the catalyst to phenol ratio or the iron or EDTA to phenol ratio improves the reaction rate. A preliminary kinetic analysis of the data shown that the rate of phenol disappearance is not first order with respect to the phenol. |
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