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Descoloração e degradação de poluentes orgânicos em soluções aquosas através do processo fotoeletroquímico

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Author(s): Bertazzoli Rodnei | Pelegrini Ronaldo

Journal: Química Nova
ISSN 0100-4042

Volume: 25;
Issue: 3;
Start page: 470;
Date: 2002;
Original page

Keywords: electrochemical treatment of effluents | photoelectrochemical treatment | kraft mill effluent | textile dyes effluent | landfill leachate

ABSTRACT
Organic compounds responsible for the color of wastewaters are usually refractory to biological digestion. In this paper the photo-assisted electrolysis process is used for color removal from three of the most colored wastewaters, which are daily generated in large amounts: the E1 bleach Kraft mill effluent, a textile reactive dye effluent and a landfill leachate. Electrolysis was carried out at 26,5 mA cm-2 in a flow reactor in which the anode surface was illuminated by a 400 W high pressure Hg bulb. In all experiments 70-75% of color reduction was observed which was also followed by a net organic load oxidation.
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