title: Removal of color substances using photocatalytic oxidation for membrane filtration processes.
abstract: This study aims to remove the color substances, which normally cause difficulties in membrane filtration processes due to fouling using heterogeneous UV/TiO2/H2O2 reactor. It is confirmed that the technique used in this study was effective to remove TOC at 38% and color400 at 89% within 150-min irradiation. The experiment results showed that low concentrations of hydrogen peroxide dosage (less than 0.016 M) to UV/TiO2 system accelerated the TOC and Color400 removal rate from 9% to 38% and 40% to 89% respectively, while over-dosage made this positive effect decline. The humic acid solution treated by photo catalytic oxidation in UV/TiO2/H2O2 reactor did not change the zeta potential on membrane surface and membrane rejection rate.
authors: Environmental Engineering Research Center, School of Civil and Structural Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798.
authors: J H
authors: JH
authors: Tay
authors: D
authors: D
authors: Chen
authors: D D
authors: DD
authors: Sun
mesh_terms: D004396:Coloring Agents / Q000302:isolation & purification* / Q000378:metabolism; D005374:Filtration / Q000379:methods*; D006812:Humic Substances / Q000378:metabolism; D006861:Hydrogen Peroxide / Q000378:metabolism; D007700:Kinetics; D008851:Micropore Filters; D010084:Oxidation-Reduction; D010777:Photochemistry; D014025:Titanium / Q000378:metabolism; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000302:isolation & purification* / Q000378:metabolism; D018508:Water Purification / Q000379:methods*
chemical_list: D004396:Coloring Agents; D006812:Humic Substances; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; D006861:Hydrogen Peroxide; D014025:Titanium