2018 - Sustainable Industrial Processing Summit & Exhibition
4-7 November 2018, Rio Othon Palace, Rio De Janeiro, Brazil
Seven Nobel Laureates have already confirmed their attendance: Prof. Dan Shechtman, Prof. Sir Fraser Stoddart, Prof. Andre Geim, Prof. Thomas Steitz, Prof. Ada Yonath, Prof. Kurt Wüthrich and Prof. Ferid Murad. More than 400 Abstracts Submitted from about 60 Countries.
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    Innovative Electrochemical Processes and Reactors for the Treatment of Wastewater
    Onofrio Scialdone1; Christian Amatore2;
    1UNIVERSITY OF PALERMO, Palermo, Italy; 2CNRS & PSL, FRENCH ACADEMY OF SCIENCES, Paris, France;
    PAPER: 62/Electrochemistry/Invited (Oral)
    SCHEDULED: 17:10/Tue./Copacabana B (150/1st)



    ABSTRACT:
    The electrochemical treatment of wastewater contaminated by organic and inorganic pollutants resistant to conventional processes is considered a very promising and appealing approach. The most interesting processes are the electrochemical direct oxidation, the indirect oxidation by electro-generated active chlorine, and the electro-Fenton. However, various problems limit the potential application of such methodologies [1], such as the cost of electric energy necessary to drive the process; the costs due to the addition of electrolyte for wastewater with low conductivity; the low current efficiencies due to the low mass transfer for low concentrations of pollutants. In this work, various innovative approaches to solve or minimize such problems will be presented and discussed, such as the utilization of microfluidic cells (for both direct anodic oxidation and electro-Fenton) [2,3], pressurized reactors (for electro-Fenton) [4], microbial fuel cells [5] and reverse electrodialysis [6]. It will be shown that the utilization of such processes can drastically improve the performances of various electrochemical processes for the treatment of wastewater. In particular, the activation of various molecules able to oxidize organic pollutants will be discussed.

    References:
    [1] C.A. Martinez-Huitle, M.A. Rodrigo, I. Sires, O. Scialdone, Single and coupled electrochemical processes and reactors for the abatement of organic water pollutants: a critical review. Chemical reviews 115, 13362-13407, 2015.
    [2] O. Scialdone, A. Galia, S. Sabatino, Electro-generation of H2O2 and abatement of organic pollutant in water by an electro-Fenton process in a microfluidic reactor, Electrochemistry communications 26, 45-47; O Scialdone, A. Galia, S. Sabatino, Abatement of Acid Orange 7 in macro and micro reactors. Effect of the electrocatalytic route. Applied Catalysis B: Environmental 148, 473-48, 2015.
    [3] O. Scialdone, C. Guarisco, A. Galia, G. Filardo, G. Silvestri, C, Amatore, Anodic abatement of organic pollutants in water in micro reactors, Journal of Electroanalytical Chemistry 638 (2), 293-296.
    [4] O. Scialdone, A. Galia, C Gattuso, S Sabatino, B Schiavo, Effect of air pressure on the electro-generation of H 2 O 2 and the abatement of organic pollutants in water by electro-Fenton process, Electrochimica Acta 182, 775-780
    [5] G Riccobono, G Pastorella, F Vicari, A D'Angelo, A Galia, P Quatrini, Abatement of AO7 in a divided microbial fuel cells by sequential cathodic and anodic treatment powered by different microorganisms, Journal of Electroanalytical Chemistry
    [6] O. Scialdone, A. D'Angelo, E. De Lume, A. Galia, Cathodic reduction of hexavalent chromium coupled with electricity generation achieved by reverse-electrodialysis processes using salinity gradients, Electrochimica Acta 137, 258-265, 2014; A. D'Angelo, M. Tedesco, A. Cipollina, A. Galia, G. Micale, O. Scialdone, Reverse electrodialysis performed at pilot plant scale: Evaluation of redox processes and simultaneous generation of electric energy and treatment of wastewater, Water research 125, 123-131, 2017.