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Mababa Diagne Virender K. Sharma Nihal Oturan Mehmet A. Oturan 《Environmental Chemistry Letters》2014,12(1):219-224
Hazardous wastes are generated in the synthesis of dyes and pigments applied in industries. Efficient methods are thus needed to clean wastewaters. Here, we use anodic oxidation and electro-Fenton with B-doped diamond anode to degrade the synthetic dye indigo in aqueous sodium dithionite. Results show the near-complete mineralization of the dye within 80 min at 500 mA. Mineralization was faster by electro-Fenton than anodic oxidation. The second-order rate constant (k) for the reaction of indigo with ·OH was measured as 4.03 × 109 M?1 s?1 at pH 3.0 and was compared with the rate constants of reactions between dyes and ·OH. The results clearly demonstrate that both electro-Fenton and anodic oxidation can be used to depollute dyes in textile effluent with high efficiency and low cost. The main oxidant, ·OH, being a non-selective reagent, the method could be applied to degrade other organic pollutants. 相似文献
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Sall Mohamed Lamine Diaw Abdou Karim Diagne Gningue-Sall Diariatou Chevillot-Biraud Alexandre Oturan Nihal Oturan Mehmet Ali Aaron Jean-Jacques 《Environmental science and pollution research international》2017,24(26):21111-21127
Environmental Science and Pollution Research - Polypyrrole (PPy) conducting films, doped with 4-amino-3-hydroxynaphthalene sulfonic acid (AHNSA), were electrosynthesized by anodic oxidation of... 相似文献
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Mababa Diagne Nihal Oturan Mehmet A. Oturan Ignasi Sirés 《Environmental Chemistry Letters》2009,7(3):261-265
The photodegradation of aqueous solutions containing 0.2 mM methyl parathion has been studied through the optimization of
the [H2O2]/[Fe3+] ratio in a Fe3+/H2O2/UV-C flow system of 1.3 L capacity. The decay kinetics and TOC abatement have been analyzed for the experiments performed
at pH 3.0 and room temperature. All experiments lead to the total methyl parathion destruction after a few minutes, following
a pseudo-first-order decay kinetics. Total mineralization can be reached after 120 min at the optimum ratio found, due to
the synergistic effect of the very oxidizing hydroxyl radical (·OH) produced via the Fenton reagent and the effective photodecarboxylation at 253.7 nm. 相似文献
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Ross N. Cuthbert Sven Bacher Tim M. Blackburn Elizabeta Briski Christophe Diagne Jaimie T. A. Dick Franz Essl Piero Genovesi Phillip J. Haubrock Guillaume Latombe Bernd Lenzner Yves Meinard Aníbal Pauchard Petr Pyšek Anthony Ricciardi David M. Richardson James C. Russell Daniel Simberloff Franck Courchamp 《Conservation biology》2020,34(6):1579-1582
Article impact statement: In an era of profound biodiversity crisis, invasion costs, invader impacts, and human agency should not be dismissed. 相似文献
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Dione Cheikh Tidiane Ndiaye Momar Delhomme Olivier Diebakate Cheikhna Ndiaye Birame Diagne Ibrahima Cisse Dame Hane Maoudo Dione Mame Mor Diouf Sitor Diop Abdoulaye Millet Maurice 《Environmental science and pollution research international》2023,30(2):2374-2391
Environmental Science and Pollution Research - Environmental pollution is one of the major problems facing human health, ecosystems, and biodiversity. This is particularly the case for water... 相似文献
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Removal of methyl parathion from water by electrochemically generated Fenton's reagent 总被引:3,自引:0,他引:3
The electro-Fenton process was used to assess the degradation of methyl parathion (MP) in aqueous solutions. This oxidation process allows the production of hydroxyls radicals which react on the organic compounds, leading to their mineralization. Degradation experiments were performed either in perchloric, sulphuric, hydrochloric and nitric acid media under current controlled electrolysis conditions at different pH. The pH effect as well as the nature of the medium (i.e., the nature of the ions present in medium) on the degradation and mineralization efficiency were studied. The mineralization of the initial pollutant was investigated by total organic carbon measurements which show a complete mineralization at pH 3 in perchloric medium. The absolute rate constant of MP hydroxylation reaction was determined as (4.20+/-0.11)x10(9)M(-1)s(-1). Complete degradation of MP and its metabolites occur in less than 45min. Degradation reaction intermediates such as aromatic compounds, carboxylic acids and inorganic ions were identified and a mineralization pathway is proposed. 相似文献
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