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Degradation of phenol by nanomaterial TiO"2 in wastewater [An article from: Chemical Engineering Journal]
Book Details
Author(s)Z. Guo, R. Ma, G. Li
PublisherElsevier
ISBN / ASINB000RR96FG
ISBN-13978B000RR96F9
AvailabilityAvailable for download now
MarketplaceUnited States 🇺🇸
Description
This digital document is a journal article from Chemical Engineering Journal, published by Elsevier in 2006. 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:
The degradation of 100mg/L phenol solution under ultraviolet (UV) in the presence of TiO"2 and in the absence of it was analyzed with gas chromatography/mass spectrometry (GC-MS) and high performance liquid chromatography (HPLC). After 12h of degradation, the products under the two conditions were both derivatized by MSTFA and TMIS, and then analyzed by GC-MS. The results show the main intermediates are the same. They are hydroquinone, resorcinol, catechol, 1,2,3-benzenetriol, (E)-2-butenedioic acid, 2-hydroxy-propaldehyde, glycerol, 3-hydroxy-propyl acid, and hydroxy-acetic acid. The chromatogram given by HPLC indicates that the presence of TiO"2 is not in favor of the degradation when the concentration of phenol is 100mg/L; its catalysis becomes evident when the concentration gets lower. Based on the intermediates, it can be proved that besides ?OH, ?H is also an important active free radical in the degradation.
Description:
The degradation of 100mg/L phenol solution under ultraviolet (UV) in the presence of TiO"2 and in the absence of it was analyzed with gas chromatography/mass spectrometry (GC-MS) and high performance liquid chromatography (HPLC). After 12h of degradation, the products under the two conditions were both derivatized by MSTFA and TMIS, and then analyzed by GC-MS. The results show the main intermediates are the same. They are hydroquinone, resorcinol, catechol, 1,2,3-benzenetriol, (E)-2-butenedioic acid, 2-hydroxy-propaldehyde, glycerol, 3-hydroxy-propyl acid, and hydroxy-acetic acid. The chromatogram given by HPLC indicates that the presence of TiO"2 is not in favor of the degradation when the concentration of phenol is 100mg/L; its catalysis becomes evident when the concentration gets lower. Based on the intermediates, it can be proved that besides ?OH, ?H is also an important active free radical in the degradation.
