Journal ArticleDOI
Electrochemical Conversion of Micropollutants in Gray Water
A. Butkovskyi,Adriaan W. Jeremiasse,Lucía Hernández Leal,Ton van der Zande,Huub H.M. Rijnaarts,Grietje Zeeman +5 more
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TLDR
Oxidation of gray water on mixed metal oxide anodes could not be recommended as a post-treatment step for gray water treatment according to the results of this study.Abstract:
Electrochemical conversion of micropollutants in real gray water effluent was studied for the first time. Six compounds that are frequently found in personal care and household products, namely methylparaben, propylparaben, bisphenol A, triclosan, galaxolide, and 4- methylbenzilidene camphor (4-MBC), were analyzed in the effluent of the aerobic gray water treatment system in full operation. The effluent was used for lab-scale experiments with an electrochemical cell operated in batch mode. Three different anodes and five different cathodes have been tested. Among the anodes, Ru/Ir mixed metal oxide showed the best performance. Ag and Pt cathodes worked slightly better than Ti and mixed metal oxide cathodes. The compounds that contain a phenolic ring (parabens, bisphenol A, and triclosan) were completely transformed on this anode at a specific electric charge Q = 0.03 Ah/L. The compounds, which contain a benzene ring and multiple side methyl methyl groups (galaxolide, 4-MBC) required high energy input (Q ≤...read more
Citations
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Challenges and Opportunities for Electrochemical Processes as Next-Generation Technologies for the Treatment of Contaminated Water
TL;DR: A critical review of recent research identifies future opportunities and research needed to overcome major challenges that currently limit the application of electrochemical water treatment systems for industrial and municipal water and wastewater treatment.
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Facile synthesis and photocatalytic efficacy of UiO-66/CdIn2S4 nanocomposites with flowerlike 3D-microspheres towards aqueous phase decontamination of triclosan and H2 evolution
TL;DR: In this article, a facile hydrothermal route was developed to prepare a series of novel UiO-66/CdIn2S4 heterojunction nanocomposite materials.
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Modular Advanced Oxidation Process Enabled by Cathodic Hydrogen Peroxide Production
TL;DR: The gas diffusion electrode exhibited high efficiency for H2O2 production over extended periods and did not show a diminution in performance in any of the matrices.
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Electrocatalytic Reduction of Nitrate Using Magnéli Phase TiO2 Reactive Electrochemical Membranes Doped with Pd-Based Catalysts
Pralay Gayen,Jason Spataro,Sumant Avasarala,Abdul-Mehdi S. Ali,José M. Cerrato,Brian P. Chaplin +5 more
TL;DR: Electrocatalytic reduction kinetics were shown to be an order of magnitude higher than catalytic NO3- Reduction kinetics, conversion of up to 67% of NO3-, with low NO2- and NH3 formation, and low energy consumption suggest that Pd-Cu/REMs are a promising technology for distributed water treatment.
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Electrochemical Transformation of Trace Organic Contaminants in the Presence of Halide and Carbonate Ions
TL;DR: Despite some uncertainty in the reaction mechanisms, the model accurately predicted rates of removal of electron-rich contaminants but underestimated the transformation rates of compounds that exhibited low reactivity with HOCl and HOBr, possibly due to the formation of halogen radicals.
References
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Direct And Mediated Anodic Oxidation of Organic Pollutants
Marco Panizza,Giacomo Cerisola +1 more
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TL;DR: The present tutorial review summarizes the results of an extensive selection of papers dealing with electrochemical oxidation, which is proposed as an alternative for treating polluted wastes, to discuss the possibility of removing selected contaminants from water using different anodes.
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Characteristics of grey wastewater
TL;DR: In this article, the authors identified 900 different XOCs potentially present in grey wastewater by the use of tables of contents of household chemical products and found that the levels of heavy metals are in the same concentration range.
Journal ArticleDOI
Remediation of water pollution caused by pharmaceutical residues based on electrochemical separation and degradation technologies: a review.
Ignasi Sirés,Enric Brillas +1 more
TL;DR: An overview on the electrochemical methods devised for the treatment of pharmaceutical residues from both, synthetic solutions and real pharmaceutical wastewaters is presented and progress on the promising solar photoelectro-Fenton process devised and further developed in the laboratory is highlighted and documented.