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Environ Sci Pollut Res Int

Title:		Electrochemical wastewater treatment: influence of the type of carbon and of nitrogen on the organic load removal
Author(s):		Fernandes A; Coelho J; Ciriaco L; Pacheco MJ; Lopes A;
Address:		"FibEnTech/MTP Unit and Department of Chemistry, University of Beira Interior, 6201-001, Covilha, Portugal. annabelf@ubi.pt. FibEnTech/MTP Unit and Department of Chemistry, University of Beira Interior, 6201-001, Covilha, Portugal"
Journal Title:		Environ Sci Pollut Res Int
Year:		2016
Volume:		20160520
Issue:		24
Page Number:		24614 - 24623
DOI:		10.1007/s11356-016-6851-6
ISSN/ISBN:		1614-7499 (Electronic) 0944-1344 (Linking)
Abstract:		"Boron-doped diamond (BDD) and Ti/Pt/PbO(2) anodes were utilized to perform the electrodegradation of synthetic samples containing humic acid in the presence of different organic and inorganic carbon-containing and nitrogen-containing compounds. The influence of the chloride ion in the degradation process of the different synthetic samples was also assessed. The results showed that the anodic oxidation process can efficiently degrade recalcitrant compounds such as humic acid. The presence of carbonate in solution enhances the nitrogen removal, whereas it hinders the oxidation of the organic compounds. When organic nitrogen is present, it is converted to NH(4)(+), which in turn is oxidized to nitrate and to volatile nitrogen compounds. Hydroxyl radicals are more prone to oxidize the organic nitrogen than the ammonium nitrogen. The presence of chloride enhances the organic matter and nitrogen removal rates, BDD being the anode material that yields the highest removals"
Keywords:		Boron/chemistry Carbon/*chemistry Diamond/chemistry Electrochemical Techniques/*methods Electrodes Humic Substances/*analysis Lead/chemistry Nitrates Nitrogen/*chemistry Organic Chemicals Oxidation-Reduction Oxides/chemistry Platinum Compounds/chemistry T;
Notes:		"MedlineFernandes, Annabel Coelho, Joao Ciriaco, Lurdes Pacheco, Maria Jose Lopes, Ana eng Germany 2016/05/21 Environ Sci Pollut Res Int. 2016 Dec; 23(24):24614-24623. doi: 10.1007/s11356-016-6851-6. Epub 2016 May 20"