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Search for: from 1 [photo-fenton.mp. [mp=title, keywords, heading words, registry words, abstract, biosystematic codes/super taxa, book title, original language book title, subject headings]] keep 6-7,14,37
Citations: 1-4


Citation <1>
Accession Number
  PREV200000331544
Author/Editor/Inventor
  Fukushima Masami [a].  Tatsumi Kenji.  Morimoto Kengo.
Institution
  [a]  Hydrospheric Environmental Protection Department, National Institute for Resources and Environment, Tsukuba, 305-8569 Japan.
Title
  Influence of iron(III) and humic acid on the photodegradation of pentachlorophenol.
Source
  Environmental Toxicology & Chemistry. [  print] 19(7). July, 2000. 1711-1716.  
Abstract
  In an aqueous solution at pH 3.0 or 5.0 that contained Fe(III) only or both Fe(III) and humic acid (HA), 20 to 40% of the pentachlorophenol (PCP) present was degraded by light irradiation (lambda > 370 nm, 8 h). The release of Cl- was also observed. Gas chromatography/mass spectrometry (GC/MS) studies showed that 2-hydroxy nonachlorodiphenyl ether (2HNCP) and octa-chlorodibenzo-p-dioxine (OCDD) are produced in the presence of Fe(III) only. These were formed by the dimerization of the reaction intermediates from PCP via radical coupling. In contrast, no 2HNCP and OCDD could be detected when both Fe(III) and HA were present. These results can be attributed to the reaction intermediates from PCP covalently binding with HA, which prevents dimerization between PCP-derived reaction intermediates.


Citation <2>
Accession Number
  PREV200000292605
Author/Editor/Inventor
  Fukushima Masami.  Tatsumi Kenji.  Morimoto Kengo.
Institution
  [a]  Hydrospheric Environmental Protection Department, National Institute for Resources and Environment (NIRE), 16-3 Onogawa, Tsukuba, 305-8569 Japan.
Title
  The fate of aniline after a photo-Fenton reaction in an aqueous system containing iron(III), humic acid, and hydrogen peroxide.
Source
  Environmental Science & Technology. [  print.] 34(10). May 15, 2000. 2006-2013.  
Abstract
  The degradation of aniline (ArNH2) was facilitated by light irradiation (lambda > 370 nm) of an aqueous solution, which contained Fe(III), humic acid (HA), and H2O2. The consumption of H2O2 and the reduction of Fe(III) to Fe(II) was consistent with the degradation of ArNH2 via the photo-Fenton reaction, accompanied by the generation of hydroxyl radicals (HO.). HPLC analysis of the reaction mixture indicated the presence of p-aminophenol, p-hydroquinone, and maleic and fumaric acids and the simultaneous release of NH4+ ion. However, the sum of the product concentrations, as determined by HPLC after the reaction, was much smaller than the ArNH2 concentration added initially. This can be attributed to the majority of the ArNH2 being incorporated into the polymeric structure in the HA after the reaction. The 15N NMR and pyrolysis-GC/MS studies indicated that, after the reaction, ArNH2 formed covalent bonds with quinone and the vinyl carbons in the HA, to form anilino-compounds, !
such as anilinoquinone and enaminone.


Citation <3>
Accession Number
  PREV199900237123
Author/Editor/Inventor
  Krutzler T.  Bauer R [a].
Institution
  [a]  Institute of Physical Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060, Wien Austria.
Title
  Optimization of a Photo-Fenton prototype reactor.
Source
  Chemosphere. 38(11). May, 1999. 2517-2532.  
Abstract
  A prototype reactor for the Photo-Fenton method was applied for highly contaminated wastewaters up to a TOC of 1400 ppm and COD of 12000 mg/L. The influences of different light sources, iron concentrations and two glass sorts on the degradation rate of 4-Chlorophenol have been studied. The degradation rate increased with amount of Fe-catalyst. The use of quartz glass increased degradation rate by 50% with Hg-medium-pressure light sources.


Citation <4>
Accession Number
  PREV199497334421
Author/Editor/Inventor
  Ruppert Gerald.  Bauer Rupert [a].  Heisler Guenter.
Institution
  [a]  Inst. Physical Chem., Vienna Univ. Technol., Getreidemarkt 9, A 1060 Vienna Austria.
Title
  UV-O-3, UV-H-2O-2, UV-TiO-2 and the photo-fenton reaction: Comparison of advanced oxidation processes for wastewater treatment.
Source
  Chemosphere. 28(8). 1994. 1447-1454.  
Abstract
  Results of the photochemical mineralization of 4-chlorophenol (4-CP) and of a wastewater from dyehouse industry by the methods UV/O-3, UV/H-2O-2, UV/TiO-2 and UV/H-2O-2/Fe-2+(photo-Fenton reaction) are reported and compared. Under illumination with a 150 W high pressure mercury lamp, TOC-degradation efficiency for 4-CP had the following order: UV/H-2O-2/Fe-2+ gt UV/O-3 gt UV/H-2O-2 = UV/TiO-2. Complete decolourization of the dye waste occurred within 20 minutes with ozone. A mineralization grade of approximately 75% was reached after 90 minutes with the photo-Fenton reaction and after 150 minutes with UV/ozone. The combinations UV/TiO-2 and UV/H-2O-2 were found to be less efficient for bleaching and degradation of the dye waste. Furthermore, a novel combination for wastewater treatment, UV/Fe-2/O-3, was investigated. Addition of Fe-2+ to the UV/ozone process increased the mineralization rate of 4-CP while no significant effect on dye waste degradation could be observed.