Application of Photocatalysis for the Removal of Natural Organic Matter in Simulated Surface and Ground Waters
-
Ceyda Senem Uyguner
and
Miray Bekbolet
Abstract
Natural organic matter (NOM) is known to be present in all natural water systems. Due to the different characteristics of surface and ground waters, the photocatalytic degradation efficiency of NOMdepends on several inhibiting and enhancing factors. The presence of hardness causing divalent cations (Ca2+, Mg2+, Fe2+/Fe3+) as well as the accompanying common anions (e.g. Cl-, NO3- ,SO42- and HCO3-/CO32-) have considerable effects on the degradation kinetics as expressed by DOC (dissolved organic carbon) and UV254 (UV absorbance at 254 nm). Ternary systems formed through cation bridging of NOM displayed different adsorptive properties onto TiO2 revealing an enhancement in removal rates. Presence of common anions as Cl-, NO3- and SO42- exerted significant effects compared to the inhibitory effects due to the presence of pH dependent HCO3-/CO32- system. Carbonate species strictly altered the degradation efficiency possibly through the direct and competitive reactions with hydroxyl radicals. Comparative evaluations of the respective outcomes of the source dependent water quality parameters are discussed.
© 2016 by Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- Synthesis of TiO2/Au Nanocomposites via Sol-Gel Process for Photooxidation of Methanol
- Design of CeyCoxTi (1-x) O3+δ Perovskite for Photocatalysis: A Statistical Study
- Electro-Fenton Treatment of TNT in Aqueous Media in Presence of Cyclodextrin. Application to Ex-situ Treatment of Contaminated Soil
- A Quantum Mechanical Approach to TiO2 Photocatalysis
- Removal of Color Compounds from Recycled Water Using Combined Activated Carbon Adsorption and AOP Decomposition
- Preparation of Co-doped TiO2 for Photocatalytic Degradation of NOx in Air under Visible Light
- Depletion of Several Antibiotics Used in Industrial Process Using Immobilized TiO2
- Oxidative Pretreatment of Fresh and Mature Landfill Leachate
- Titanium Dioxide onto Polyethylene for Water Decontamination
- Application of Photocatalysis for the Removal of Natural Organic Matter in Simulated Surface and Ground Waters
- Photocatalytic Treatment of A Dye Polluted Industrial Effluent With A Solar Pilot-Scale CPC Reactor
- Evaluation of the Algaecide Activity of Titanium Dioxide on Autoclaved Aerated Concrete
- Degradation of 4-n-nonylphenol in Water by 20 kHz Ultrasound
- Integration of Photocatalysis with Ultrafiltration or Membrane Distillation for Removal of Azo Dye Direct Green 99 from Water
- Binder Effect on Photocatalytic Performance of TiO2 Solution Coating Layers
- Rhodamine B Discolouration on TiO2 in the Cement Environment: A Look at Fundamental Aspects of the Self-cleaning Effect in Concretes
- Effects of Inorganic Anions and Humic Acid on the Photocatalytic and Ozone Oxidation of Oxytetracycline in Aqueous Solution
