Disinfection and formation of disinfection by-products in a photoelectrocatalytic system

被引：47

作者：

Selcuk, Huseyin ^{[1
]}

机构：

[1] Pamukkale Univ, Fac Engn, Dept Environm Engn, TR-20074 Kinikli Denizli, Turkey

来源：

WATER RESEARCH | 2010年 / 44卷 / 13期

关键词：

Disinfection; Disinfection by-products; Humic acid; Photoelectrocatalytic; Titanium dioxide; Trihalomethanes; SOLAR PHOTOCATALYTIC DEGRADATION; TITANIUM-DIOXIDE; HUMIC SUBSTANCES; SOLUTION MATRIX; FORMIC-ACID; TIO2; OXIDATION; WATER; FILM; INACTIVATION;

D O I：

10.1016/j.watres.2010.04.034

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3966 / 3972

页数：7

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