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https://hdl.handle.net/11499/6366
Title: | Disinfection and formation of disinfection by-products in a photoelectrocatalytic system | Authors: | Selçuk, Hüseyin | Keywords: | Disinfection Disinfection by-products Humic acid Photoelectrocatalytic Titanium dioxide Trihalomethanes Disinfection by-product Disinfection byproducts E. coli E.Coli inactivation Effects of anions Escherichia coli (E. coli) Hydrogen phosphates Inhibitory effect Photoanode Photocatalytic treatment TiO Total organic carbon Treatment systems Biological materials Chlorine compounds Escherichia coli Ions Organic acids Organic carbon Oxides Phosphoric acid Titanium anion bicarbonate chloride disinfectant agent humic acid phosphate phosphoric acid sulfate titanium dioxide trihalomethane humic substance catalysis disinfection electrochemistry formation mechanism inhibition microbial activity oxide photochemistry titanium wastewater water treatment adsorption article electrode oxidation photocatalysis priority journal total organic carbon ultraviolet radiation analysis isolation and purification microbial viability procedures Anions Catalysis Electrochemistry Electrodes Humic Substances Microbial Viability Photochemistry Bacteria (microorganisms) |
Abstract: | In this study, disinfection and formation of disinfection by-products (DBPs) were studied in a photoelectrocatalytic (PEC) treatment system. Disinfection performance of titanium dioxide (TiO2) in the PEC system was determined through Escherichia coli (E. coli) inactivation. Humic acid (HA) was used as a model organic compound and its removal was monitored by total organic carbon (TOC) measurements using 410 nm (color) and 254 nm (UV254) wavelengths. Trihalomethanes (THMs) were measured for the evaluation of DBPs formation during PEC treatment of chloride and HA mixture. It was found that unlike photocatalytic treatment, THMs might form in the PEC system. To investigate the effects of anions on the PEC treatment, chloride (Cl-), sulfate (SO42-), phosphoric acid (H2PO4-)/hydrogen phosphate (HPO42-) and bicarbonate (HCO3-) ions were added separately to the HA and bacterial suspensions. Presence of H2PO4-/HPO42- and HCO3- ions resulted in inhibitory effects on both HA degradation and E. coli inactivation, which were also examined in the photoanode. It was observed that the presence of HA had a strong inhibitory effect on the disinfection of E. coli. © 2010 Elsevier Ltd. | URI: | https://hdl.handle.net/11499/6366 https://doi.org/10.1016/j.watres.2010.04.034 |
ISSN: | 0043-1354 |
Appears in Collections: | Mühendislik Fakültesi Koleksiyonu PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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