Topic
Wet oxidation
About: Wet oxidation is a research topic. Over the lifetime, 3094 publications have been published within this topic receiving 61536 citations.
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TL;DR: The effects of wet oxidation treatment (WO) on the fingerprints of the polymeric substances which compose the activated sludge, were analysed to establish a relationship between the location of polymeric material and its facility to become oxidised.
17 citations
TL;DR: The performance of liquid chromatography-isotope ratio mass spectrometry (LC-IRMS) for polar halogenated compounds was evaluated and the first time such highly chlorinated compounds were studied with the LC-IR MS system was studied.
Abstract: The performance of liquid chromatography-isotope ratio mass spectrometry (LC-IRMS) for polar halogenated compounds was evaluated. Oxidation capacity of the system was tested with halogenated acetic acids and halogenated aromatic compounds. Acetic acid (AA) was selected as a reference compound for complete oxidation and compared on the molar basis to the oxidation of other analytes. The isotope values were proofed with calibrated δ(13)C values obtained with an elemental analyzer (EA). Correct isotope values were obtained for mono- and dichlorinated, fluorinated, and tribrominated acetic acids and also for aniline, phenol, benzene, bromobenzene, chlorobenzene, 1,2-dichlorobenzene, 2,4,6-trichlorophenol, pentafluorophenol, and nitrobenzene. Incomplete oxidation of trichloroacetic acid (TCA) and trifluoroacetic acid (TFA) resulted in lower recovery compared to AA (37% and 24%, respectively) and in isotopic shift compared to values obtained with EA (TCA Δδ(13)C(EA/LC-IRMS) = 8.8‰, TFA Δδ(13)C(EA/LC-IRMS) = 6.0‰). Improvement of oxidation by longer reaction time in the reactor and increase in the concentration of sulfate radicals did not lead to complete combustion of TCA and TFA needed for δ(13)C analysis. To the best of our knowledge, this is the first time such highly chlorinated compounds were studied with the LC-IRMS system. This work provides information for method development of LC-IRMS methods for halogenated contaminants that are known as potential threats to public health and the environment.
17 citations
TL;DR: The non-catalytic wet air oxidation of olive mill wastewaters was investigated and yielded 34, 94 and 74% removal of COD, total phenols and color respectively, and ecotoxicity to V. fischeri was slightly reduced after 2 h of treatment at the above conditions.
17 citations
TL;DR: In this article, two types of vapor-grown carbon nanofibers (CNFs), either as-produced or submitted to a graphitization treatment, were modified using microwave-generated oxygen plasma.
17 citations
TL;DR: In this article, a 3D bimetallic oxide compound, [CuMo3O10]·H2O (1), was synthesized under hydrothermal conditions and characterized by single crystal X-ray diffraction.
17 citations