Please use this identifier to cite or link to this item: 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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