Results 171 to 180 of about 40,694 (210)

Degradation of nitrophenols by Fenton and photo-Fenton processes

Journal of Photochemistry and Photobiology A: Chemistry, 2005
Abstract The degradation of four nitrophenols (NPs), namely 2-nitrophenol (2-NP), 4-nitrophenol (4-NP), 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP) with Fenton process, solar- and UV-assisted Fenton processes were investigated and compared for their treatment efficiency. The maximum mineralization observed for mono-NP, DNP and TNP was 32%, 25%
V. Kavitha, K. Palanivelu
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Petrochemical Wastewater Treatment by Photo-Fenton Process

Water, Air, & Soil Pollution, 2015
In recent decades, the rise in the generation of extremely toxic and refractory wastewaters, as petroleum refinery plant effluents, is demanding increasingly efficient treatment technologies, among which photo-Fenton advanced oxidation processes are highlighted due to their rapid and effective petroleum-derived pollutant degradation.
Ainhoa Rubio-Clemente, E. Chica, Gustavo A. Peñuela   +2 more
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Toxicity evaluation of the landfill leachate after treatment with photo-Fenton, biological and photo-Fenton followed by biological processes

Journal of Environmental Science and Health, Part A, 2018
The objective of this study was the toxicity evaluation of landfill leachate samples both raw and after treatment by photo-Fenton (PF), biological (Bio) and photo-Fenton followed by biological (PF-Bio) processes. The organisms Artemia salina and Lactuca sativa were exposed to the leachate in different dilution.
Andréia, Colombo, Aparecido N, Módenes, Daniela E G, Trigueros, Bruna L, de Medeiros, Pricila, Marin, Silvia P D, Monte Blanco, Camila L, Hinterholz   +6 more
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Mineralization of pentafluorophenol using photo-Fenton processes

Desalination, 2010
Abstract The mineralization of pentafluorophenol (C 6 F 5 OH) in water using UV-C light and Fe(II) sulfate/Fe(III) oxalate with H 2 O 2 was examined to develop a technique to counteract persistent and bioaccumulative C 6 F 5 OH to harmless species. Photo-Fenton process led to efficient degradation of C 6 F 5 OH to fluoride ions and CO 2 .
L. Ravichandran, K. Selvam, M. Swaminathan   +2 more
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Degradation of polyolefins by Fenton and Photo- Fenton processes

2021
Due to its great characteristics and low price, the production of plastic materials has increased significantly in the last few decades. Unfortunately, most plastic waste is not disposed of appropriately what consequently caused their entering in the environment.
Kučić Grgić, Dajana, Bule Možar, Kristina, Bolanča, Tomislav, Markić, Marinko, Miloloža Nikolić, Martina, Ukić, Šime, Martinjak, Viktorija, Cvetnić, Matija   +7 more
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Oxidation of aqueous chlorophenols with photo-Fenton process

Journal of Environmental Science and Health, Part B, 1998
Abstract Research of 2,4‐chlorophenol and 2,4,6‐trichlorophenol in aqueous solution using the photo‐Fenton process was conducted in two parts. The first part of the study explored the treatment efficiency and reaction rate expression of 2,4‐chlorophenol and 2,4,6‐trichlorophenol. With respect to the simulated experimental data, the relationship between
Chao-Yin Kuo, Shang-Lien Lo, Min-Tse Chan   +2 more
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Degradation of Organic Pollutants by the Photo-Fenton-Process

Chemical Engineering & Technology, 1998
The Photo-Fenton-Process utilizing the combinations Fe(II)/H 2 O 2 /UVA and Fe(III) oxalate/H 2 O 2 /UVA was employed with success to degrade biorefractory organic pollutants in landfill leachate. The rate of degradation of the organic pollutants depends on the concentrations of hydrogen peroxide and the iron catalyst, the pH value and the ...
Soo-Myung Kim, Alfons Vogelpohl
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Solar photo-Fenton treatment—Process parameters and process control

Applied Catalysis B: Environmental, 2006
Photo-Fenton experiments were performed using alachlor as a model compound (initial concentration 100 mg/L) in a compound parabolic collector solar pilot-plant. Three process parameters were varied following a central composite design without star points (temperature 20–50 °C, iron concentration 2–20 mg/L, illuminated volume 11.9–59.5% of total). Under
Gernjak, W., Fuerhacker, M., Fernández-Ibañez, P., Blanco, J., Malato, S.   +4 more
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Comparison of Fenton and Photo-Fenton Processes for Livestock Wastewater Treatment

Journal of Environmental Science and Health, Part B, 2006
In this study, the photochemical degradation of livestock wastewater was carried out by the Fenton and Photo-Fenton processes. The effects of pH, reaction time, the molar ratio of Fe(2 +)/H(2)O(2), and the Fe(2 +) dose were studied. The optimal conditions for the Fenton and Photo-Fenton processes were found to be at a pH of 4 and 5, an Fe(2 +) dose of ...
Jae-Hong, Park, Il-Hyoung, Cho, Soon-Woong, Chang   +2 more
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Homogeneous photo-Fenton processes at near neutral pH: A review

Applied Catalysis B: Environmental, 2017
The occurrence of new emerging contaminants in surface waters has recently grabbed increased attention of the scientific community. The adoption of Advanced Oxidation Processes (AOPs) represents an efficient strategy to remove recalcitrant compounds from aqueous streams and achieve high mineralization levels.
CLARIZIA, LAURA, RUSSO, DANILO, Somma, Ilaria Di, MAROTTA, RAFFAELE, ANDREOZZI, ROBERTO   +4 more
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